UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

 
FORM 10-K

 
(Mark One)
xANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20132015
or
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from              to             
Commission File Number: 001-32886

 
CONTINENTAL RESOURCES, INC.
(Exact name of registrant as specified in its charter)

 
Oklahoma 73-0767549
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
  
20 N. Broadway, Oklahoma City, Oklahoma 73102
(Address of principal executive offices) (Zip Code)
Registrant’s telephone number, including area code: (405) 234-9000
Securities registered pursuant to Section 12(b) of the Act:
Title of class Name of each exchange on which registered
Common Stock, $0.01 par value New York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None

 
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer x  Accelerated filer ¨
    
Non-accelerated filer 
¨  (Do not check if a smaller reporting company)
  Smaller reporting company ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x
The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant as of June 30, 20132015 was approximately $4.9 billion, based upon the closing price of $86.06$42.39 per share as reported by the New York Stock Exchange on such date.
185,622,427372,684,421 shares of our $0.01 par value common stock were outstanding on February 17, 2014.16, 2016.

DOCUMENTS INCORPORATED BY REFERENCE
Portions of the definitive Proxy Statement of Continental Resources, Inc. for the Annual Meeting of Shareholders to be held in May 2014,2016, which will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year, are incorporated by reference into Part III of this Form 10-K.
     




Table of Contents 
   
PART I  
Item 1.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.
   
PART II  
Item 5.
Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.
   
PART III  
Item 10.
Item 11.
Item 12.
Item 13.
Item 14.
   
PART IV  
Item 15.
When we refer to “us,” “we,” “our,” “Company,” or “Continental” we are describing Continental Resources, Inc. and our subsidiaries.




Glossary of Crude Oil and Natural Gas Terms
The terms defined in this section aremay be used throughout this report:
“basin” A large natural depression on the earth’s surface in which sediments generally brought by water accumulate.
“Bbl” One stock tank barrel, of 42 U.S. gallons liquid volume, used herein in reference to crude oil, condensate or natural gas liquids.
“Bcf” One billion cubic feet of natural gas.
“Boe” Barrels of crude oil equivalent, with six thousand cubic feet of natural gas being equivalent to one barrel of crude oil based on the average equivalent energy content of the two commodities.
“Btu” British thermal unit, which represents the amount of energy needed to heat one pound of water by one degree Fahrenheit and can be used to describe the energy content of fuels.
“completion” The process of treating a drilled well followed by the installation of permanent equipment for the production of crude oil and/or natural gas.
“conventional play” An area believed to be capable of producing crude oil and natural gas occurring in discrete accumulations in structural and stratigraphic traps.
“DD&A” Depreciation, depletion, amortization and accretion.
de-risked” Refers to acreage and locations in which the Company believes the geological risks and uncertainties related to recovery of crude oil and natural gas have been reduced as a result of drilling operations to date. However, only a portion of such acreage and locations have been assigned proved undeveloped reserves and ultimate recovery of hydrocarbons from such acreage and locations remains subject to all risks of recovery applicable to other acreage.
“developed acreage” The number of acres allocated or assignable to productive wells or wells capable of production.
“development well” A well drilled within the proved area of a crude oil or natural gas reservoir to the depth of a stratigraphic horizon known to be productive.
“dry gas” Refers to natural gas that remains in a gaseous state in the reservoir and does not produce large quantities of liquid hydrocarbons when brought to the surface. Also may refer to gas that has been processed or treated to remove all natural gas liquids.
“dry hole” Exploratory or development well that does not produce crude oil and/or natural gas in economically producible quantities.
“ECO-Pad A Continental Resources, Inc. trademark which describes a well site layout which allows for drilling multiple wells from a single pad resulting in less environmental impact and lower drilling and completion costs.
“enhanced recovery” The recovery of crude oil and natural gas through the injection of liquids or gases into the reservoir, supplementing its natural energy. Enhanced recovery methods are sometimes applied when production slows due to depletion of the natural pressure.
“exploratory well” A well drilled to find a new fieldcrude oil or natural gas in an unproved area, to find a new reservoir in aan existing field previously found to be productive of crude oil or natural gas in another reservoir.reservoir, or to extend a known reservoir beyond the proved area.
“field” An area consisting of a single reservoir or multiple reservoirs all grouped on, or related to, the same individual geological structural feature or stratigraphic condition. The field name refers to the surface area, although it may refer to both the surface and the underground productive formations.
“formation” A layer of rock which has distinct characteristics that differs from nearby rock.
“fracture stimulation”A process involving the high pressure injection of water, sand and additives into rock formations to stimulate crude oil and natural gas production. Also may be referred to as hydraulic fracturing.
"gross acres" or "gross wells" Refers to the total acres or wells in which a working interest is owned.
“held by production” or “HBP” Refers to an oil and gas lease continued into effect into its secondary term for so long as a producing oil and/or gas well is located on any portion of the leased premises or lands pooled therewith.

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“horizontal drilling” A drilling technique used in certain formations where a well is drilled vertically to a certain depth and then drilled horizontally within a specified interval.
“HPAI” High pressure air injection.

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“hydraulic fracturing” A process involving the high pressure injection of water, sand and additives into rock formations to stimulate crude oil and natural gas production.
“in-field well” A well drilled between producing wells in a field to provide more efficient recovery of crude oil or natural gas from the reservoir.
“injection well” A well into which liquids or gases are injected in order to “push” additional crude oil or natural gas out of underground reservoirs and into the wellbores of producing wells. Typically considered an enhanced recovery process.
“MBbl” One thousand barrels of crude oil, condensate or natural gas liquids.
“MBoe” One thousand Boe.
“Mcf” One thousand cubic feet of natural gas.
“Mcfe” One thousand cubic feet of natural gas equivalent, with one barrel of crude oil being equivalent to six Mcf of natural gas based on the average equivalent energy content of the two commodities.
“MMBo” One million barrels of crude oil.
“MMBoe” One million Boe.
“MMBtu” One million British thermal units.
“MMcf” One million cubic feet of natural gas.
“MMcfe” One million cubic feet of natural gas equivalent, with one barrel of crude oil being equivalent to six Mcf of natural gas based on the average equivalent energy content of the two commodities.
microseismic” or “microseismic monitoringRefers to the recording and imaging of seismic moments induced by hydraulic fracturing to provide technical data about fracture stimulation efficiency. This monitoring of fracture stimulations, being the industry's only measurement tool, yields technical data to allow for optimization of completion designs to help maximize production and/or reduce costs.
net acres” or "net wells"wells” Refers to the sum of the fractional working interests owned in gross acres or gross wells.
“NYMEX” The New York Mercantile Exchange.
“pad drilling" or "pad development" Describes a well site layout which allows for drilling multiple wells from a single pad resulting in less environmental impact and lower drilling and completion costs. Also may be referred to as ECO-Pad drilling or development.
“play” A portion of the exploration and production cycle following the identification by geologists and geophysicists of areas with potential crude oil and natural gas reserves.
“productive well” A well found to be capable of producing hydrocarbons in sufficient quantities such that proceeds from the sale of the production exceed production expenses and taxes.
 “prospect” A potential geological feature or formation which geologists and geophysicists believe may contain hydrocarbons. A prospect can be in various stages of evaluation, ranging from a prospect that has been fully evaluated and is ready to drill to a prospect that will require substantial additional seismic data processing and interpretation.
“proved reserves” The quantities of crude oil and natural gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs and under existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the right to operate expire, unless evidence indicates renewal is reasonably certain.
“proved developed reserves” Reserves expected to be recovered through existing wells with existing equipment and operating methods.
“proved undeveloped reserves” or “PUD” Proved reserves expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion.
“PV-10” When used with respect to crude oil and natural gas reserves, PV-10 represents the estimated future gross revenuerevenues to be generated from the production of proved reserves using a 12-month unweighted arithmetic average of the first-day-of-the-month commodity prices for the period of January to December, net of estimated production and future development and abandonment costs using prices andbased on costs in effect at the determination date, before income taxes, and without giving effect to non-property-related expenses, discounted to a present value using an annual discount rate of 10% in accordance with the guidelines of the Securities and Exchange Commission (“SEC”). PV-10 is not a financial measure calculated in accordance with generally

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accepted accounting principles (“GAAP”) and generally differs from Standardized Measure, the most directly comparable GAAP financial measure, because it does not include the effects of income taxes on future net revenues. Neither PV-10 nor Standardized Measure represents an estimate of the fair market value of the Company’s crude oil and natural gas properties. The Company and others in the industry use PV-10 as a measure to compare the relative size and value of proved reserves held by companies without regard to the specific tax characteristics of such entities.
“reservoir” A porous and permeable underground formation containing a natural accumulation of producible crude oil and/or natural gas that is confined by impermeable rock or water barriers and is separate from other reservoirs.

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“resource play” Refers to an expansive contiguous geographical area with prospective crude oil and/or natural gas reserves that has the potential to be developed uniformly with repeatable commercial success due to advancements in horizontal drilling and multi-stage fracturingcompletion technologies.
“royalty interest” Refers to the ownership of a percentage of the resources or revenues produced from a crude oil or natural gas property. A royalty interest owner does not bear exploration, development, or operating expenses associated with drilling and producing a crude oil or natural gas property.
“SCOOP” Refers to the South Central Oklahoma Oil Province, a term we use to describe an emerging area of crude oil and liquids-rich natural gas properties located in the Anadarko basinBasin of south central Oklahoma.Oklahoma in which we operate.
“STACK” Refers to Sooner Trend Anadarko Canadian Kingfisher, a term used to describe properties located in the Anadarko Basin of Oklahoma in which we operate.
“spacing” The distance between wells producing from the same reservoir. Spacing is often expressed in terms of acres (e.g., 640-acre spacing) and is often established by regulatory agencies.
“standardized measure” Discounted future net cash flows estimated by applying the 12-month unweighted arithmetic average of the first-day-of-the-month commodity prices for the period of January to December to the estimated future production of year-end proved reserves. Future cash inflows are reduced by estimated future production and development costs based on period-end costs to determine pre-tax net cash inflows. Future income taxes, if applicable, are computed by applying the statutory tax rate to the excess of pre-tax cash inflows over the tax basis in the crude oil and natural gas properties. Future net cash inflows after income taxes are discounted using a 10% annual discount rate.
“step-out well” or “step outs” A well drilled beyond the proved boundaries of a field to investigate a possible extension of the field.
3D (threethree dimensional seismic) defined locations” Locations that have been subjected to 3D seismic testing. We typically use 3D seismic testing to evaluate reservoir presence and/or continuity. We do not typically evaluate reservoir productivity using 3D seismic technology.
“3D(3D) seismic” Seismic surveys using an instrument to send sound waves into the earth and collect data to help geophysicists define the underground configurations. 3D seismic provides three-dimensional pictures. We typically use 3D seismic testing to evaluate reservoir presence and/or continuity. We also use 3D seismic to identify sub-surface hazards to assist in steering, avoiding hazards and determining where to perform enhanced completions.
“unconventional play” An area believed to be capable of producing crude oil and natural gas occurring in accumulations that are regionally extensive, but may lack readily apparent traps, seals and discrete hydrocarbon-water boundaries that typically define conventional reservoirs. These areas tend to have low permeability and may be closely associated with source rock, as is the case with oil and gas shale, tight oil and gas sands and coalbed methane, and generally require horizontal drilling, fracture stimulation treatments or other special recovery processes in order to achieve economic production. In general, unconventional plays require the application of more advanced technology and higher drilling and completion costs to produce relative to conventional plays.
“undeveloped acreage” Lease acreage on which wells have not been drilled or completed to a point that would permit the production of commercial quantities of crude oil and/or natural gas.
“unit” The joining of all or substantially all interests in a reservoir or field, rather than a single tract, to provide for development and operation without regard to separate property interests. Also, the area covered by a unitization agreement.
waterflood” The injection of water into a crude oil reservoir to “push” additional crude oil out of the reservoir rock and into the wellbores of producing wells. Typically an enhanced recovery process.
“wellbore”well bore” The hole drilled by the bit that is equipped for crude oil or natural gas production on a completed well. Also called a well or borehole.
“working interest” The right granted to the lessee of a property to explore for and to produce and own crude oil, natural gas, or other minerals. The working interest owners bear the exploration, development, and operating costs on either a cash, penalty, or carried basis.

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Cautionary Statement for the Purpose of the “Safe Harbor” Provisions of the Private Securities Litigation Reform Act of 1995
This report includesand information incorporated by reference in this report include “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements other than statements of historical fact, including, but not limited to, forecasts or expectations regarding the Company's business and statements or information concerning the Company’s future operations, performance, financial condition, production and reserves, schedules, plans, timing of development, returns,rates of return, budgets, costs, business strategy, objectives, and cash flow,flows, included in this report are forward-looking statements. When used in this report, theThe words “could,” “may,” “believe,” “anticipate,” “intend,” “estimate,” “expect,” “project,” “budget,” “plan,” “continue,” “potential,” “guidance,” “strategy” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain such identifying words. Forward-looking statements are based on the Company’s current expectations and assumptions about future events and currently available information as to the outcome and timing of future events. Although the Company believes the expectations reflected in the forward-looking statements are reasonable and based on reasonable assumptions, no assurance can be given that such expectations will be correct or achieved or that the assumptions are accurate. When considering forward-looking statements, you should keep in mind the risk factors and other cautionary statements described under Part I, Item 1A. Risk Factors included in this report, quarterly reports, registration statements filed from time to time with the SEC, and other announcements we make from time to time.
Without limiting the generality of the foregoing, certain statements incorporated by reference, if any, or included in this report constitute forward-looking statements.
Forward-looking statements may include, but are not limited to, statements about:
our strategy;
our business strategy;and financial plans;
our future operations;
our crude oil and natural gas reserves;reserves and related development plans;
our technology;
our financial strategy;
crude oil, natural gas liquids, and natural gas prices and differentials;
the timing and amount of future production of crude oil and natural gas and flaring activities;
the amount, nature and timing of capital expenditures;
estimated revenues, expenses and results of operations;
drilling and completing of wells;
competition;
marketing of crude oil and natural gas;
transportation of crude oil, natural gas liquids, and natural gas to markets;
property exploitation or property acquisitions and dispositions;
costs of exploiting and developing our properties and conducting other operations;
our financial position;
general economic conditions;
credit markets;
our liquidity and access to capital;
the impact of governmental policies, laws and regulations, as well as regulatory and legal proceedings involving us and of scheduled or potential regulatory or legal changes;
our future operating results;
plans, objectives, expectations and intentions contained in this report that are not historical, including, without limitation, statements regarding our future growth plans;financial results;
our commodity or other hedging arrangements; and
the ability and willingness of current or potential lenders, hedging contract counterparties, customers, and working interest owners to fulfill their obligations to us or to enter into transactions with us in the future on terms that are acceptable to us.
We caution you these forward-lookingForward-looking statements are based on the Company’s current expectations and assumptions about future events and currently available information as to the outcome and timing of future events. Although the Company believes these assumptions and expectations are reasonable, they are inherently subject to all of thenumerous business, economic, competitive, regulatory and other risks and uncertainties, most of which are difficult to predict and many of which are beyond our control, incident to the exploration for,Company's control. No assurance can be given that such expectations will be correct or achieved or that the assumptions are accurate or will not change over time. The risks and development, production,uncertainties that may affect the operations, performance and saleresults of crude oilthe business and natural gas. These risksforward-looking statements include, but are not limited to, commodity price volatility, inflation, lack of availability of drilling, completionthose risk factors and production equipment and services and transportation infrastructure, environmental risks, drilling and

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other operating risks, lack of availability and security of computer-based systems, regulatory changes, the uncertainty inherent in estimating crude oil and natural gas reserves and in projecting future rates of production, cash flows and access to capital, the timing of development expenditures, and the other riskscautionary statements described under Part I, Item 1A. Risk Factors and elsewhere in this report, quarterly reports, registration statements filedwe file from time to time with the SEC,Securities and Exchange Commission, and other announcements we make from time to time.
Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof.on which such statement is made. Should one or more of the risks or uncertainties described in this report occur, or should underlying assumptions prove incorrect, ourthe Company's actual results and plans could differ materially from those expressed in any forward-looking statements. All forward-looking statements are expressly qualified in their entirety by this cautionary statement. This cautionary statement should also be considered in connection with any subsequent written or oral forward-looking statements that we or persons acting on our behalf may issue.
Except as expressly stated above or otherwise required by applicable law, we disclaim any dutythe Company undertakes no obligation to publicly correct or update any forward-looking statements to reflectstatement whether as a result of new information, future events or circumstances after the date of this report.report, or otherwise.

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Part I
You should read this entire report carefully, including the risks described under Part I, Item 1A. Risk Factors and our consolidated financial statements and the notes to those consolidated financial statements included elsewhere in this report. Unless the context otherwise requires, references in this report to “Continental Resources,” “Continental,” “we,” “us,” “our,” “ours” or “the Company” refer to Continental Resources, Inc. and its subsidiaries.
 
Item 1.Business
General
We are an independent crude oil and natural gas exploration and production company with properties in the North, South and East regions of the United States. The North region consists of properties north of Kansas and west of the Mississippi River and includes North Dakota Bakken, Montana Bakken, and the Red River units. The South region includes Kansas and all properties south of Kansas and west of the Mississippi River including various plays in the SouthSCOOP (South Central Oklahoma Oil Province (“SCOOP”)Province), STACK (Sooner Trend Anadarko Canadian Kingfisher), Northwest Cana and Arkoma Woodford areas of Oklahoma. The East region is comprised of undeveloped leasehold acreage east of the Mississippi River.River with no current drilling or production operations.
We were originally formed in 1967 to explore for, develop and produce crude oil and natural gas properties. Through 1989,the late 1980s, our activities and growth remained focused primarily in Oklahoma. In 1989,the late 1980s, we expanded our activity into the North region. Ourregion, where a substantial portion of our operations areis now geographically concentrated due to our successful leasing and drilling activities in the Bakken field. The North region with that region comprisingcomprised approximately 77%68% of our crude oil and natural gas production and approximately 86%77% of our crude oil and natural gas revenues for the year ended December 31, 2013.2015. Approximately 76%58% of our estimated proved reserves as of December 31, 20132015 are located in the North region. In recent years, we have significantly expanded our activity in our South region resulting from our discovery of the SCOOP play and our increased activity in the Northwest Cana and STACK plays, all of which are located in Oklahoma. Our South region comprised approximately 32% of our crude oil and natural gas production, 23% of our crude oil and natural gas revenues, and 42% of our estimated proved reserves as of and for the year ended December 31, 2015.
We have focused our operations on the exploration and development of crude oil since the 1980s. For the year ended December 31, 2013,2015, crude oil accounted for approximately 71%66% of our total production and approximately 87%85% of our crude oil and natural gas revenues. Crude oil represents approximately 68%57% of our estimated proved reserves as of December 31, 2013.2015.
We focus our exploration activities in large new or developing crude oil and liquids-rich natural gas plays that provide us the opportunity to acquire undeveloped acreage positions for future drilling operations. We have been successful in targeting large repeatable resource plays where three dimensional seismic, horizontal drilling, geosteering technologies, advanced completion technologies (e.g., fracture stimulation) and enhanced recovery technologies allow us to economically develop and produce crude oil and natural gas reserves from unconventional formations. As a result of these efforts, we have grown substantially through the drill bit, adding 1,046 MMBoe of proved crude oil and natural gas reserves through extensions and discoveries from January 1, 2009 through December 31, 2013 compared to 85 MMBoe added through proved reserve acquisitions during that same period. In October 2012, we announced a five-year growth plan to triple our production and proved reserves from year-end 2012 to year-end 2017.bit.
As of December 31, 2013,2015, our estimated proved reserves were 1,084.11,226 MMBoe, with estimated proved developed reserves of 406.8525 MMBoe, or 38%43% of our total estimated proved reserves. For the year ended December 31, 2013,2015, we generated crude oil and natural gas revenues of $3.6$2.6 billion and operating cash flows of $2.6$1.9 billion. For the year ended December 31, 2013, daily2015, production averaged 135,919221,715 Boe per day, a 39%27% increase over average production of 97,583174,189 Boe per day for the year ended December 31, 2012.2014. Average daily production for the quarter ended December 31, 20132015 increased 35%16% to 144,254224,936 Boe per day from 106,831193,456 Boe per day for the quarter ended December 31, 2012.2014.
The table below summarizes our total estimated proved reserves, PV-10 and net producing wells as of December 31, 2013,2015, average daily production for the quarter ended December 31, 20132015 and the reserve-to-production index in our principal regions.operating areas. The PV-10 values shown below are not intended to represent the fair market value of our crude oil and natural gas properties. There are numerous uncertainties inherent in estimating quantities of crude oil and natural gas reserves. See Part I, Item 1A. Risk Factors and “Critical Accounting Policies and Estimates” in Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations of this report for further discussion of uncertainties inherent toin the reserve estimates. 
Our reserve estimates as of December 31, 2013 are based primarily on a reserve report prepared by our independent reserve engineers, Ryder Scott Company, L.P (“Ryder Scott”). In preparing its report, Ryder Scott evaluated properties representing approximately 99% of our PV-10, 99% of our proved crude oil reserves, and 94% of our proved natural gas reserves as of December 31, 2013. Our internal technical staff evaluated the remaining properties. Our estimated proved reserves and related future net revenues, PV-10 and Standardized Measure at December 31, 2013 were determined using the 12-month unweighted arithmetic average of the first-day-of-the-month commodity prices for the period of January 2013 through December 2013, without giving effect to derivative transactions, and were held constant throughout the lives of the properties. These prices were

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$96.78 per Bbl for crude oil and $3.67 per MMBtu for natural gas ($91.50 per Bbl for crude oil and $5.36 per Mcf for natural gas adjusted for location and quality differentials).
 December 31, 2013 Average daily
production for
fourth quarter
2013
(Boe per day)
   Annualized
reserve/production
index (2)
 December 31, 2015 Average daily
production for
fourth quarter
2015
(Boe per day)
   Annualized
reserve/production
index (2)
 Proved
reserves
(MBoe)
 Percent
of total
 PV-10 (1)
(In millions)
 Net
producing
wells
 Percent
of total
  Proved
reserves
(MBoe)
 Percent
of total
 PV-10 (1)
(In millions)
 Net
producing
wells
 Percent
of total
 
North Region:                            
Bakken field                            
North Dakota Bakken 688,741
 63.5% $13,093
 779
 80,374
 55.7% 23.5
 618,197
 50.4% $4,005
 1,196
 125,583
 55.8% 13.5
Montana Bakken 52,401
 4.8% 1,437
 233
 12,961
 9.0% 11.1
 44,837
 3.6% 431
 273
 10,772
 4.8% 11.4
Red River units       

                    
Cedar Hills 54,191
 5.0% 1,522
 130
 10,498
 7.3% 14.1
 42,456
 3.5% 523
 132
 8,658
 3.9% 13.4
Other Red River units 22,419
 2.1% 427
 131
 3,900
 2.7% 15.7
 5,603
 0.5% 34
 120
 2,996
 1.3% 5.1
Other 1,884
 0.2% 32
 16
 812
 0.6% 6.4
 2,271
 0.2% 20
 8
 902
 0.4% 6.9
South Region:       
                    
SCOOP 214,667
 19.8% 3,286
 74
 23,754
 16.5% 24.8
 412,546
 33.7% 2,508
 220
 64,534
 28.7% 17.5
Northwest Cana 29,827
 2.8% 198
 73
 6,696
 4.6% 12.2
Northwest Cana/STACK 83,951
 6.8% 378
 67
 7,709
 3.4% 29.8
Arkoma Woodford 11,103
 1.0% 69
 59
 2,769
 1.9% 11.0
 9,912
 0.8% 49
 56
 2,124
 0.9% 12.8
Other 8,892
 0.8% 111
 277
 2,490
 1.7% 9.8
 6,038
 0.5% 38
 232
 1,658
 0.8% 10.0
Total 1,084,125
 100.0% $20,175
 1,772
 144,254
 100.0% 20.6
 1,225,811
 100.0% $7,986
 2,304
 224,936
 100.0% 14.9
 
(1)PV-10 is a non-GAAP financial measure and generally differs from Standardized Measure, the most directly comparable GAAP financial measure, because it does not include the effects of income taxes on future net revenues of approximately $3.9$1.5 billion. Neither PV-10 nor Standardized Measure represents an estimate of the fair market value of our crude oil and natural gas properties. We and others in the crude oil and natural gas industry use PV-10 as a measure to compare the relative size and value of proved reserves held by companies without regard to the specific income tax characteristics of such entities.
(2)The Annualized Reserve/Production Index is the number of years that estimated proved reserves would last assuming current production continued at the same rate. This index is calculated by dividing annualized fourth quarter 20132015 production into estimated proved reserve volumes atas of December 31, 2013.2015.
Industry Operating Environment and Outlook
Crude oil prices remained significantly depressed in 2015 and face continued downward pressure due to domestic and global supply and demand factors. The downward price pressure intensified in late 2015 and early 2016, with crude oil prices dropping below $27 per barrel in February 2016, a level not seen since 2003. Natural gas prices faced similar downward pressure in 2015, dropping below $1.70 per MMBtu in December 2015.
In response to these price declines, and given the uncertainty regarding the timing and magnitude of any price recovery, we have significantly reduced our planned non-acquisition capital spending for 2016 to $920 million, a reduction of 63% compared to $2.50 billion of non-acquisition capital spending in 2015. This non-acquisition investment level is designed to target capital expenditures and cash flows being relatively balanced for 2016 at an assumed average West Texas Intermediate benchmark crude oil price of approximately $37 per barrel for the year, with any cash flow deficiencies being funded by borrowings under our revolving credit facility. Our reduced spending is projected to result in a decrease in our 2016 average daily production of approximately 10% compared to 2015.
With reduced capital spending planned for 2016, we will be growing our drilled but uncompleted ("DUC") well inventory. Our DUC inventory in North Dakota is expected to increase from 135 gross operated wells at December 31, 2015 to approximately 195 gross operated wells at year-end 2016. Our DUC inventory in Oklahoma is expected to increase from 35 gross operated wells at December 31, 2015 to approximately 50 gross operated wells at year-end 2016. We will continue to monitor our capital spending closely based on actual and projected cash flows and could make additional reductions to our 2016 capital spending should commodity prices decrease further. Conversely, a significant improvement in commodity prices could result in an increase in our capital expenditures.
In light of the challenges facing our industry, our primary business strategies for 2016 will include: (1) optimizing cash flows through operating efficiencies and cost reductions, (2) high-grading investments based on rates of return and opportunities to convert undeveloped acreage to acreage held by production, and (3) working to balance capital spending with cash flows to

2



The following table provides additional information regardingminimize new borrowings and maintain ample liquidity, as elaborated upon in the subsequent section titled Our Business Strategy.
See the section below titled Summary of Crude Oil and Natural Gas Properties and Projects for further discussion of our key development areas as2016 plans. Also see Part II, Item 7. Management’s Discussion and Analysis of December 31, 2013Financial Condition and the budgeted amounts we planResults of Operations for discussion of our 2015 operating results and potential impact on 2016 operating results due to spend on exploratory and development drilling, capital workovers, and facilities in 2014.depressed commodity prices.
          2014 Plan
  Developed acres Undeveloped acres Gross wells
planned for
drilling
 Capital
expenditures (1)
(in millions)
  Gross Net Gross Net 
North Region:            
Bakken field            
North Dakota Bakken 900,678
 530,682
 504,898
 378,370
 802
 $2,233
Montana Bakken 159,943
 135,426
 214,358
 165,343
 68
 413
Red River units 156,703
 137,294
 
 
 16
 50
Niobrara - Colorado/Wyoming 12,087
 8,529
 126,662
 69,526
 
 
Other 22,194
 7,220
 235,931
 179,265
 6
 40
South Region:            
SCOOP 74,019
 48,990
 603,665
 354,864
 159
 876
Northwest Cana 120,668
 73,777
 110,120
 71,314
 
 13
Arkoma Woodford 110,973
 26,359
 4,568
 434
 
 
Other 100,710
 46,008
 197,434
 167,506
 9
 65
East Region 
 
 152,762
 144,363
 
 
Total 1,657,975
 1,014,285
 2,150,398
 1,530,985
 1,060
 $3,690

(1)The capital expenditures budgeted for 2014 as reflected above include amounts for drilling, capital workovers and facilities and exclude budgeted amounts for land of $300 million, seismic of $30 million, and $30 million for vehicles, computers and other equipment. Potential acquisition expenditures are not budgeted.
Our Business Strategy
Our goalDespite a reduced capital budget for 2016 that is reflective of the current commodity price environment, our business strategy continues to increasebe focused on increasing shareholder value by finding and developing crude oil and natural gas reserves at costs that provide an attractive raterates of return on our investment.return. The principal elements of our businessthis strategy are:include:
FocusGrowing and sustaining a premier portfolio of assets focused on crude oil.high rate-of-return projects. During the late 1980s we beganWe hold a portfolio of leasehold acreage and drilling opportunities in certain premier U.S. resource plays with varying exposure to believe the valuation potential for crude oil, exceeded that of natural gas. Accordingly, we began to shift our reserve and production profiles toward crude oil. As of December 31, 2013, crude oil comprised 68% of our total proved reserves and 71% of our 2013 annual production.
Growth Through Drilling. A substantial portion of our annual capital expenditures are invested in drilling projects and acreage acquisitions. From January 1, 2009 through December 31, 2013, proved crude oilgas, and natural gas reserve additions through extensionsliquids. We pursue opportunities to develop our existing properties as well as explore for new resource plays where significant reserves may be economically developed. Our capital programs are designed to allocate investments to projects that provide opportunities to convert undeveloped acreage to acreage held by production and discoveries were 1,046 MMBoe compared to 85 MMBoemaximize hydrocarbon recoveries and rates of proved reserve acquisitions.return on capital employed. Our operations are primarily focused on the exploration and development of crude oil, but we also allocate capital to liquids-rich natural gas areas that provide attractive rates of return.
Internally Generated ProspectsOptimizing cash flows through operating efficiencies, cost reductions, and enhanced completions. . Although we periodically evaluateWe continue to manage through the current commodity price downturn by focusing on improving operating efficiencies and complete strategic acquisitions, our technical staff has internally generatedreducing costs. Our key operating areas are characterized by large acreage positions in select unconventional resource plays with multiple stacked geologic formations that provide repeatable drilling opportunities and resource potential. We operate a substantial portion of the opportunities for the investmentmajority of our capital. As an early entrant in new or emerging plays, we expect to acquire undevelopedwells and leasehold acreage at a lower cost than later entrants into a developing play.
Focus on Unconventional Crude Oil and Natural Gas Resource Plays. Our experience with three dimensional seismic, horizontal drilling, geosteering technologies, advanced completion technologies (e.g., fracture stimulation) and enhanced recovery technologiesbelieve the concentration of our operated assets allows us to economically develop unconventional crude oilleverage our technical expertise and natural gas resource reservoirs, such asmanage the Red River B Dolomite, Bakken,development of our properties to achieve cost reductions through operating efficiencies and Oklahoma Woodford formations. The Oklahoma Woodford is a widespread unconventional shale reservoir that produceseconomies of scale.
In 2015, we achieved large efficiency gains in various basins across the stateaspects of Oklahoma, with our properties being primarily concentratedbusiness, including reductions in the SCOOP, Northwest Canaspud-to-total depth drilling times and Arkoma areas of the play. Production ratesaverage days to drill horizontal laterals, which translated into substantial reductions in the Red River unitsdrilling costs in our core areas. Our drilling and completion costs for most operated wells declined on average approximately 25% in 2015 due to operational efficiency gains and lower service costs. In addition to lowering our drilling and completion costs, we also have been sustainedoptimize cash flows through the use of enhanced recovery technologies including watercompletion technologies. In North Dakota, we are optimizing cash flows through enhanced completions using new hybrid and high pressure air injection. Ourslickwater designs, which have increased 90-day production rates between 35% and 50% on average. In Oklahoma, we are optimizing cash flows using enhanced completions that target optimum sand and fluid combinations. Initial results from the Red River units, the Bakken field,our 2015 activities are encouraging, and the Oklahoma Woodford comprised approximately 48,324 MBoe, or 97%,we expect most of our total crude oil2016 well completions in Oklahoma will use enhanced completion methods.
Maintaining financial flexibility and natural gas production fora strong balance sheet. Maintaining a strong balance sheet and ample liquidity are key components of our business strategy. For 2016, we will continue our focus on preserving financial flexibility and ample liquidity as we manage the risks facing our industry. Our 2016 capital budget is reflective of decreased commodity prices and has been established based on an expectation of available cash flows, with any cash flow deficiencies expected to be funded by borrowings under our revolving credit facility. As we have done historically to preserve or enhance liquidity we may adjust our capital program throughout the year, endeddivest non-strategic assets, or enter into strategic joint ventures.
Focusing on organic growth through disciplined capital investments. Although we consider various growth opportunities, including property acquisitions, our primary focus is on organic growth through leasing and drilling in our core areas where we can best exploit our extensive inventory of repeatable drilling opportunities to achieve attractive rates of return. From January 1, 2011 through December 31, 2013.
Acquire Significant Acreage Positions in New or Developing Plays. In addition2015, our proved reserve additions through organic extensions and discoveries were 1,534 MMBoe compared to the 970,325 net undeveloped acres held in the Bakken play in North Dakota and Montana and the Oklahoma Woodford, we held 560,660 net undeveloped acres in other crude oil and natural gas plays as86 MMBoe of December 31, 2013. Our technical staff is focused on identifying and testing newproved reserve acquisitions during that same period.

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unconventional crude oil and natural gas resource plays where significant reserves could be developed if economically producible volumes can be achieved through advanced drilling, fracture stimulation and enhanced recovery techniques.
Our Business Strengths
We have a number of strengths we believe willto help us successfullymanage through the current commodity price downturn and execute our business strategy:strategy, including the following:
Large Acreage Inventory. We held 1,530,985approximately 1.19 million net undeveloped acres and 1,014,2851.15 million net developed acres under lease in certain premier U.S. resource plays as of December 31, 2013.2015. Approximately 68%59% of theour net undeveloped acres are located within unconventional resource plays in the Bakken, (North DakotaSCOOP, Northwest Cana, STACK and Montana),Arkoma Woodford (Oklahoma)areas. We have developed sizable acreage positions in our core operating areas and believe the Niobrara (Coloradoconcentration of our assets allows us to achieve operating efficiencies and Wyoming). The remaining balancereduce costs through economies of scale. We are among the largest leaseholders

3



in the Bakken and SCOOP plays with approximately 1.05 million net acres and 439,800 net acres under lease in those respective plays at December 31, 2015. Being an early entrant in the Bakken and SCOOP plays has allowed us to capture significant acreage positions in core parts of the net undeveloped acreage is located in conventional plays including 3D-defined locations for the Lodgepole (North Dakota), Morrow-Springer (Western Oklahoma) and Frio (South Texas) plays.
ExperienceExpertise with Horizontal Drilling and Enhanced RecoveryCompletion Methods. We have substantial experience with horizontal drilling and enhanced recovery methods. In 1992, we drilled our first horizontal well,completion methods and we have drilled over 2,100 horizontal wells since that time. We continue to be a leaderamong the industry leaders in the developmentuse of new drilling and completion technologies. Our trademarked ECO-PadWe continue to optimize drilling concept, which allows forand completion efficiencies through the use of multi-well pad drilling multiple wells from a single pad, is becoming a standard drilling approach in theour operating areas. Further, we are among industry because it improves land use and increases operating efficiencies. We have drilled as many as 14 wells on a pad site and have the opportunity to increase this number in the future based on surface availability, technology and well spacing. We are also a leaderleaders in extending lateral drilling lengths, in some instances uplengths. Results to three miles. In 2012, we completed the first multiple-unit spaced well drilled in Oklahoma, which had a horizontal section that was twice the length of previousdate indicate longer laterals in the area. Longer laterals are believed to have a positive impact on well productivity and economics. Additionally, we are a leaderWe have also been among industry leaders in the explorationtesting enhanced completion technologies involving various combinations of fluid types, proppant types and evaluationvolumes, and stimulation stage lengths to determine optimal methods for maximizing crude oil recoveries and rates of the lower layers or “benches” of the Three Forks formation in the Bakken field (referred to as the "Lower Three Forks"), initially targeting the first bench of the Three Forks in mid-2008 followed by the successful completion ofreturn. We continually refine our first well in the second bench in October 2011. In 2012, we successfully completed the first well ever drilled in the third bench of the Three Forks. In 2013, we completed our first of four pilot density projects in the Bakken and Three Forks formations, which included our first wells drilled in the fourth bench. The density project demonstrated the productive potential of multiple stacked zones and is helping us determine the optimum drilling and spacing pattern for future development of these reservoirs.completion techniques in an effort to deliver improved results across our properties.
Control Operations Over a Substantial Portion of Our Assets and Investments. As of December 31, 2013,2015, we operated properties comprising 87% of our total proved reserves and 86%83% of our PV-10. By controlling a significant portion of our operations, we are able to more effectively manage the cost and timing of exploration and development of our properties, including the drilling and fracture stimulationcompletion methods used.
Experienced Management Team. Our senior management team has extensive expertise in the crude oil and natural gas industry. Our Chief Executive Officer, Harold G. Hamm, began his career in the crude oil and natural gas industry in 1967. Our 9 senior officers have an average of 3034 years of crude oil and natural gas industry experience.
Strong Financial Position and LiquidityIn the second half of 2013, our corporate credit rating was upgraded to investment grade by Moody’s Investor Services, Inc. and Standard & Poor’s Ratings Services. We have experienced significant growth with our success in the development of the Bakken field and most recently the SCOOP play. Our growth has been matched with a disciplined capital sourcing approach which has enabled a strong credit profile. We have a revolving credit facility with lender commitments totaling $1.5$2.75 billion which may be increased up to $2.5a total of $4.0 billion upon agreement with participating lenders to provide additional liquidity if needed to maintain our growth strategy, take advantage of business opportunities and fund our capital program.program and commitments. We had $1.2approximately $1.9 billion of available borrowing capacity under our credit facility at December 31, 2013February 19, 2016 after considering outstanding borrowings and letters of credit. We believehave no near-term debt maturities, with our planned exploration and development activities will be funded substantially from our operating cash flows andearliest maturity being a $500 million term loan due in November 2018.
Our credit facility borrowings. Our 2014 capital expenditures budget has been establishedis unsecured and does not have a borrowing base requirement that is subject to periodic redetermination based on changes in commodity prices and proved reserves. Additionally, downgrades or other negative rating actions with respect to our credit rating do not trigger a reduction in our current expectationcredit facility commitments, nor do such actions trigger a security requirement or change in covenants. Downgrades of available cash flows from operationsour credit rating will, however, trigger increases in our credit facility's interest rates and commitment fees paid on unused borrowing availability under certain circumstances.
In November 2015, we completed transactions that increased our lender commitments under our revolving credit facility. Should expected available cash flows from operations materially differ from expectations, we believefacility and refinanced a portion of our credit facility has sufficient availabilityborrowings to fund any deficit or that we can reducean unsecured three-year term loan with a lower interest rate. These transactions enhanced our capital expenditures to be in line with cash flows from operations.liquidity and reduced our interest expense.

4



Crude Oil and Natural Gas Operations
Proved Reserves
Proved reserves are those quantities of crude oil and natural gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the right to operate expire, unless evidence indicates renewal is reasonably certain. In connection with the estimation of proved reserves, the term “reasonable certainty” implies a high degree of confidence that the quantities of crude oil and/or natural gas actually recovered will equal or exceed the estimate. To achieve reasonable certainty, our internal reserve engineers and Ryder Scott Company, L.P (“Ryder Scott”), our independent reserve engineers, employed technologies that have been demonstrated to yield results with consistency and repeatability. The technologies and economic data used in the estimation of our proved reserves include, but are not limited to, well logs, geologic maps including isopach and structure maps, analogy and statistical analysis, and available downhole and production data, seismic data and well test data.
The following tables settable sets forth our estimated proved crude oil and natural gas reserves and PV-10 by reserve category as of December 31, 2013.2015. The total Standardized Measure of discounted cash flows as of December 31, 20132015 is also presented. Our reserve estimates as of December 31, 2015 are based primarily on a reserve report prepared by Ryder Scott. In preparing its report, Ryder Scott evaluated properties representing approximately 99% of our PV-10, 99% of our proved crude oil reserves, and 94%97% of our proved natural gas reserves as of December 31, 2013, and our2015. Our internal technical staff evaluated the remaining properties. A copy of Ryder Scott’s summary report is included as an exhibit to this Annual Report on Form 10-K.  
Our estimated proved reserves and related future net revenues, PV-10 and Standardized Measure at December 31, 2015 were determined using the 12-month unweighted arithmetic average of the first-day-of-the-month commodity prices for the period of January 2015 through December 2015, without giving effect to derivative transactions, and were held constant throughout the lives of the properties. These prices were $50.28 per Bbl for crude oil and $2.58 per MMBtu for natural gas ($41.63 per Bbl for crude oil and $2.35 per Mcf for natural gas adjusted for location and quality differentials).
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 PV-10 (1)
(in millions)
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 PV-10 (1)
(in millions)
Proved developed producing 277,845
 761,729
 404,800
 $10,461.0
 324,631
 1,178,434
 521,037
 $5,678.6
Proved developed non-producing 785
 7,240
 1,992
 49.6
 2,167
 11,909
 4,151
 29.0
Proved undeveloped 459,158
 1,309,051
 677,333
 9,664.8
 373,716
 1,961,443
 700,623
 2,278.4
Total proved reserves 737,788
 2,078,020
 1,084,125
 $20,175.4
 700,514
 3,151,786
 1,225,811
 $7,986.0
Standardized Measure (1)       $16,295.8
       $6,476.3
 
(1)PV-10 is a non-GAAP financial measure and generally differs from Standardized Measure, the most directly comparable GAAP financial measure, because it does not include the effects of income taxes on future net revenues of approximately $3.9$1.5 billion. Neither PV-10 nor Standardized Measure represents an estimate of the fair market value of our crude oil and natural gas properties. We and others in the crude oil and natural gas industry use PV-10 as a measure to compare the relative size and value of proved reserves held by companies without regard to the specific income tax characteristics of such entities.

5



The following table provides additional information regarding our estimated proved crude oil and natural gas reserves by region as of December 31, 2013.2015. 
 Proved Developed Proved Undeveloped Proved Developed Proved Undeveloped
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
North Region:                        
Bakken field                        
North Dakota Bakken 159,372
 260,318
 202,759
 401,841
 504,846
 485,982
 211,358
 366,248
 272,399
 269,994
 454,819
 345,797
Montana Bakken 31,727
 32,169
 37,088
 12,771
 15,252
 15,313
 26,744
 31,323
 31,964
 11,250
 9,732
 12,872
Red River units                        
Cedar Hills 51,263
 7,039
 52,436
 1,755
 
 1,755
 41,628
 4,967
 42,456
 
 
 
Other Red River units 17,472
 13,400
 19,705
 2,714
 
 2,714
 5,039
 3,386
 5,603
 
 
 
Other 619
 7,590
 1,884
 
 
 
 253
 12,109
 2,271
 
 
 
South Region:                        
SCOOP 14,607
 238,629
 54,379
 39,096
 727,150
 160,288
 37,516
 575,754
 133,475
 73,442
 1,233,778
 279,072
Northwest Cana 1,433
 102,676
 18,546
 981
 61,803
 11,281
Northwest Cana/STACK 2,736
 109,999
 21,070
 19,030
 263,114
 62,882
Arkoma Woodford 18
 66,509
 11,103
 
 
 
 11
 59,404
 9,912
 
 
 
Other 2,119
 40,639
 8,892
 
 
 
 1,513
 27,153
 6,038
 
 
 
Total 278,630
 768,969
 406,792
 459,158
 1,309,051
 677,333
 326,798
 1,190,343
 525,188
 373,716
 1,961,443
 700,623
The following table provides information regarding changes in total estimated proved reserves for the periods presented.  
 Year Ended December 31, Year Ended December 31,
MBoe 2013 2012 2011 2015 2014 2013
Proved reserves at beginning of year 784,677
 508,438
 364,712
 1,351,091
 1,084,125
 784,677
Revisions of previous estimates (96,054) 4,149
 2,237
 (297,198) (107,949) (96,054)
Extensions, discoveries and other additions 444,654
 233,652
 161,981
 253,173
 440,621
 444,654
Production (49,610) (35,716) (22,581) (80,926) (63,579) (49,610)
Sales of minerals in place 
 (7,838) 
 (329) (3,227) 
Purchases of minerals in place 458
 81,992
 2,089
 
 1,100
 458
Proved reserves at end of year 1,084,125
 784,677
 508,438
 1,225,811
 1,351,091
 1,084,125
Revisions of previous estimates. Revisions represent changes in previous reserve estimates, either upward or downward, resulting from new information normally obtained from development drilling and production history or resulting from a change in economic factors, such as commodity prices, operating costs, or development costs. Revisions
Commodity prices decreased significantly in 2015. The 12-month average price for crude oil decreased 47% from $94.99 per Bbl for 2014 to $50.28 per Bbl for 2015, while the year ended December 31, 2013 primarily represent12-month average price for natural gas decreased 41% from $4.35 per MMBtu for 2014 to $2.58 per MMBtu for 2015. These decreases shortened the economic lives of certain producing properties and caused certain exploration and development projects to become uneconomic which had an adverse impact on our proved reserve estimates, resulting in downward reserve revisions of 185 MMBo and 391 Bcf (totaling 251 MMBoe) in 2015. We may experience additional downward reserve revisions as a result of prices in 2016 if the currently depressed price environment for crude oil and natural gas persists or worsens.
In response to the continued decrease in commodity prices throughout 2015, we have further refined our drilling program and reduced our planned rig count to concentrate our efforts in our core areas of North Dakota and Oklahoma that provide the best opportunities to improve recoveries and rates of return. The refinement of our drilling program contributed to the removal of proved undeveloped ("PUD")PUD reserves resultingno longer scheduled to be developed within five years from a decisionthe date in 2013which they were first booked. One factor leading to allocate a greater focus of our 5-year growth plan to our drilling programs in higher rates-of-return crude oil and liquids-rich natural gas areas of the Bakken and SCOOP while continuing to build on the early success in our development of the Lower Three Forks reservoirs in the Bakken. Another contributing factorremoval is ouran increased focusemphasis on multi-well pad drilling in the Bakken, which resulted in the removal of PUDs in certain areas in favor of PUDs more likely to be developed with pad drilling where operating efficiencies may be realizedrealized. Further, in the SCOOP play we removed certain PUD locations originally planned to maximize ratesbe developed with standard lateral drilling lengths in favor of return. ThesePUDs to be developed with extended length laterals in similar locations. Longer laterals are believed to have a positive impact on well productivity and economics. The combination of these and other factors contributed to resulted in

6



the removal of 81 MMBoe65 MMBo and 197 Bcf (totaling 98 MMBoe) of PUD reserves in 2013.2015. These removals do not necessarily represent the elimination of recoverable hydrocarbons physically in place. In some instances the removed reserves may be developed in the future in the event of a favorable change in commodity prices and an expansion of our capital expenditure budget.
Additionally, changes in anticipated production performance on certain properties resulted in 63 MMBo of downward revisions to crude oil proved reserves and 125 Bcf of upward revisions to natural gas proved reserves (netting to 42 MMBoe of downward revisions) in 2015.
The downward revisions described above were partially offset by upward revisions in 2015 due to lower operating costs being realized in conjunction with depressed commodity prices and improvements in operating efficiencies as well as other factors.
Extensions, discoveries and other additions. These are additions to our proved reserves that result from (1)(i) extension of the proved acreage of previously discovered reservoirs through additional drilling in periods subsequent to discovery and (2)(ii) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. Extensions, discoveries and other additions for each of the three years reflected in the table above were primarily due to increases in proved reserves associated with our successful drilling activity and strong production growth in the Bakken field.field and SCOOP play. Proved reserve additions from our drilling activities in the Bakken totaled 96 MMBoe, 222 MMBoe and 276 MMBoe for the year ended December 31, 2013.2015, 2014 and 2013, respectively, while reserve additions in SCOOP totaled 93 MMBoe, 208 MMBoe and 158 MMBoe for 2015, 2014 and 2013, respectively. Additionally, 2013 extensions and discoveries in 2015 were significantly impacted by successful drilling results in the emerging SCOOP play,Northwest Cana/STACK area, resulting in 158 MMBoe of proved reserve additions during the year. Significant progress continued to be madeof 57 MMBoe in 2013 in developing and expanding our Bakken and SCOOP assets, both laterally and vertically, through strategic exploration, development, planning and technology.2015. See the subsequent section titled Summary of Crude Oil and Natural Gas Properties and Projects for a discussion of our 20132015 drilling

6



activities in the Bakken and SCOOP plays, among others. activities. We expect a significant portion of future reserve additions will come from our major development projects in the Bakken, SCOOP, and SCOOP.Northwest Cana/STACK areas.
Sales of minerals in place. These are reductions to proved reserves that resultresulting from the disposition of properties during a period. During the year ended December 31, 2012, we disposed of certain non-strategic properties in Oklahoma, Wyoming, and our East region in an effort to redeploy capital to our strategic areas that we believe will deliver higher future growth potential. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 13.14. Property Acquisitions and Dispositions for further discussion of our 2012notable dispositions. We may continue to seek opportunities to sell non-strategic properties if and when we have the ability to dispose of such assets at competitivefavorable terms.
Purchases of minerals in place. These are additions to proved reserves that resultresulting from the acquisition of properties during a period. Purchases for the year ended December 31, 2012 primarily reflect the Company’s acquisitions of propertiesWe have had no significant mineral purchases in the Bakken play of North Dakota. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 13. Property Acquisitions and Dispositions and Note 14. Property Transaction with Related Party for further discussion of our 2012 acquisitions. Wepast three years. However, we may continue to participate as a buyer of properties when and if we have the ability to increase our position in strategic plays at competitivefavorable terms.
Proved Undeveloped Reserves
OurAll of our PUD reserves at December 31, 2013 totaled 677,333 MBoe, consisting of 459,158 MBbls of crude oil and 1,309,051 MMcf of natural gas. PUD reserves at December 31, 2013 were concentrated2015 are located in the Bakken, SCOOP, and SCOOPNorthwest Cana/STACK plays, our most active development areas, with those districtsplays comprising 74%51%, 40%, and 24%9%, respectively, of our total PUD reserves at year-end 2013.2015. The following table provides information regarding changes in our PUD reserves for the year ended December 31, 2013.2015. Our PUD reserves at December 31, 2015 include 91 MMBoe of reserves associated with operated drilled but uncompleted wells.
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
Proved undeveloped reserves at December 31, 2012 334,293
 795,585
 466,891
Proved undeveloped reserves at December 31, 2014 524,223
 1,946,335
 848,612
Revisions of previous estimates (52,440) (251,475) (94,354) (216,289) (315,390) (268,855)
Extensions and discoveries 240,653
 981,118
 404,173
 111,058
 546,854
 202,201
Sales of minerals in place (63) (80) (76)
Purchases of minerals in place 23
 26
 28
 
 
 
Conversion to proved developed reserves (63,371) (216,203) (99,405) (45,213) (216,276) (81,259)
Proved undeveloped reserves at December 31, 2013 459,158
 1,309,051
 677,333
Proved undeveloped reserves at December 31, 2015 373,716
 1,961,443
 700,623
Revisions of previous estimates. During the year ended December 31, 2013,2015, we removed 3151,225 gross (174(689 net) PUD locations, which resulted in the removal of 4265 MMBo and 235197 Bcf (81(totaling 98 MMBoe) of PUD reserves. These removals were due to the aforementioned decision to allocate a greater focuscontinued decrease in commodity prices during 2015, particularly in late 2015, and resulting refinement of our 5-year growth plandrilling program to drilling programs in higher rates-of-returnplace greater emphasis on core areas of the Bakken, SCOOP and Lower Three Forks,Northwest Cana/STACK areas that provide the best opportunities to improve recoveries and rates of return, with increased focus on areas capable of being developed viathrough the use of multi-well pad drilling.drilling and extended length laterals. These and other factors contributed to the removal of PUD

7



reserves in certain areas having less attractive rates of return, or are otherwise less likely to be developed viausing pad drilling.drilling or extended laterals, or are otherwise no longer scheduled to be developed within five years of the date in which they were initially booked.
Also as a result of decreased commodity prices, certain exploration and development projects became uneconomic which had an adverse impact on our PUD reserve estimates, resulting in downward revisions of 131 MMBo and 301 Bcf (totaling 181 MMBoe) in 2015.
Additionally, changes in anticipated production performance on producing properties having offsetting PUD locations resulted in 46 MMBo of downward revisions to crude oil PUD reserves and 121 Bcf of upward revisions to natural gas PUD reserves (netting to 26 MMBoe of downward revisions) in 2015.
The downward revisions described above were partially offset by upward revisions in 2015 due to lower operating costs being realized on producing properties having offsetting PUD locations in conjunction with depressed commodity prices and improvements in operating efficiencies as well as other factors.
Extensions and discoveries. Extensions and discoveries were primarily due to increases in PUD reserves associated with our successful drilling activity in the Bakken, SCOOP and SCOOP.Northwest Cana/STACK areas. PUD reserve additions in the Bakken totaled 20565 MMBo and 258109 Bcf (248(totaling 83 MMBoe) in 2013, while2015, SCOOP PUD reserve additions totaled 3328 MMBo and 687248 Bcf (147(totaling 69 MMBoe), and Northwest Cana/STACK PUD reserve additions totaled 19 MMBo and 190 Bcf (totaling 50 MMBoe). See the subsequent section titled Summary of Crude Oil and Natural Gas Properties and Projects for a discussion of our 20132015 drilling activities in the Bakken and SCOOP plays.these areas.
Conversion to proved developed reserves. In 2013,2015, we developed approximately 21%18% of our PUD reserveslocations and 20%10% of our PUD locationsreserves booked as of December 31, 20122014 through the drilling of 360526 gross (208(165 net) development wells at an aggregate capital cost of approximately $1.7$1.0 billion. In the second half of 2015, we accelerated the reduction of our capital spending and well completion activities in response to the continued decrease in commodity prices, which resulted in our 2015 capital spending being approximately $200 million below budget. These actions adversely impacted our conversion of PUD reserves to proved developed reserves during the year.
Development plans. We have acquired substantial leasehold positions in the Bakken, fieldSCOOP and SCOOP play.Northwest Cana/STACK plays. Our drilling programs to date in those areas have focused on proving our undeveloped leasehold acreage through strategic exploratory drilling, thereby increasing the amount of leasehold acreage in the secondary term of the lease with no further drilling obligations (i.e., categorized as held by production) and resulting in a reduced amount of leasehold acreage in the primary term of the lease. WhileGoing forward, while we will continue tomay opportunistically drill strategic exploratory wells, and build onthe majority of our current leasehold position, we expect to continue increasing our focuscapital expenditures will be focused on developing our PUD locations.locations given the current commodity price environment. Estimated future development costs relating to the development of PUD reserves are projected to be approximately $0.8 billion in 2016, $0.9 billion in 2017, $1.4 billion in 2018, $2.0 billion in 2019, and $1.4 billion in 2020. These capital expenditure projections are reflective of the significant decrease in commodity prices during the year and have been established based on an expectation of available cash flows and availability under our revolving credit facility. Development of our existing PUD reserves at December 31, 20132015 is expected to occur within five years of the date of initial booking of the PUDs. Estimated future development costs relating to the development of PUD reserves are projectednot expected to be approximately $2.5 billion in 2014, $2.2 billion in 2015, $2.3 billion in 2016, $2.0 billion in 2017, and $1.0 billion in 2018. We expectdeveloped within five years of initial booking because of depressed commodity prices or for other reasons have been removed from our cash flows from operations and our credit facility

7



will be sufficient to fund these future development costs.reserves at December 31, 2015. We had no PUD reserves at December 31, 20132015 that remained undeveloped beyond five years from the date of initial booking.
Qualifications of Technical Persons and Internal Controls Over Reserves Estimation Process.
Ryder Scott, our independent reserves evaluation consulting firm, estimated, in accordance with generally accepted petroleum engineering and evaluation principles and definitions and guidelines established by the SEC, 99% of our PV-10, 99% of our proved crude oil reserves, and 94%97% of our proved natural gas reserves as of December 31, 20132015 included in this Annual Report on Form 10-K. The Ryder Scott technical personnel responsible for preparing the reserve estimates presented herein meet the requirements regarding qualifications, independence, objectivity and confidentiality set forth in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. Refer to Exhibit 99 included with this Annual Report on Form 10-K for further discussion of the qualifications of Ryder Scott personnel.
We maintain an internal staff of petroleum engineers and geoscience professionals who work closely with our independent reserve engineers to ensure the integrity, accuracy and timeliness of data furnished to Ryder Scott in their reserves estimation process. In the fourth quarter, our technical team is in contact regularly with representatives of Ryder Scott to review properties and discuss methods and assumptions used in Ryder Scott’s preparation of the year-end reservesreserve estimates. A copy of the Ryder ScottProved reserve reportinformation is reviewed by our Audit Committee with representatives of Ryder Scott and by our internal technical staff before the information is filed with the SEC on Form 10-K. Additionally, certain members of our senior management review and

8



approve the Ryder Scott reserve report and on a quarterlysemi-annual basis review any internally estimated significant changes to our proved reserves.
Our Vice President—Corporate EngineeringReserves is the technical person primarily responsible for overseeing the preparation of our reserve estimates. He has a Bachelor of Science degree in Petroleum Engineering, an MBA in Finance and 2931 years of industry experience with positions of increasing responsibility in operations, acquisitions, engineering and evaluations. He has worked in the area of reserves and reservoir engineering most of his career and is a member of the Society of Petroleum Engineers. The Vice President—Corporate EngineeringReserves reports directly to our Senior Vice President—Operations.President and Chief Operating Officer. The reserve estimates are reviewed and approved by the President and Chief Operating Officer and certain other members of senior management.
Proved Reserve and PV-10 Sensitivities
Our year-end 2015 proved reserve and PV-10 estimates were prepared using 2015 average prices of $50.28 per Bbl for crude oil and $2.58 per MMBtu for natural gas. Commodity prices existing in February 2016 are lower than the 2015 average prices. If commodity prices do not increase from current levels, our future calculations of estimated proved reserves and PV-10 will be based on lower prices which could result in the removal of then uneconomic reserves from our proved reserves in future periods.
Provided below are sensitivities illustrating the potential impact on our estimated proved reserves and PV-10 at December 31, 2015 under different pricing scenarios for crude oil and natural gas. In these sensitivities, all factors other than the commodity price assumption have been held constant for each well. These sensitivities are only meant to demonstrate the impact that changing commodity prices may have on estimated proved reserves and PV-10 and there is no assurance these outcomes will be realized.

The crude oil price sensitivities provided below show the impact on proved reserves and PV-10 under various crude oil price scenarios, with natural gas prices being held constant at the 2015 average price of $2.58 per MMBtu.

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The natural gas price sensitivities provided below show the impact on proved reserves and PV-10 under various natural gas price scenarios, with crude oil prices being held constant at the 2015 average price of $50.28 per Bbl.
Developed and Undeveloped Acreage
The following table presents our total gross and net developed and undeveloped acres by region as of December 31, 2013:2015: 
 Developed acres Undeveloped acres Total Developed acres Undeveloped acres Total
 Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net
North Region:                        
Bakken field                        
North Dakota Bakken 900,678
 530,682
 504,898
 378,370
 1,405,576
 909,052
 1,053,294
 595,396
 318,341
 205,227
 1,371,635
 800,623
Montana Bakken 159,943
 135,426
 214,358
 165,343
 374,301
 300,769
 188,424
 148,764
 154,017
 96,049
 342,441
 244,813
Red River units 156,703
 137,294
 
 
 156,703
 137,294
 158,700
 138,716
 43,082
 26,407
 201,782
 165,123
Niobrara - Colorado/Wyoming 12,087
 8,529
 126,662
 69,526
 138,749
 78,055
Other 22,194
 7,220
 235,931
 179,265
 258,125
 186,485
 17,957
 5,731
 246,076
 202,615
 264,033
 208,346
South Region:                        
SCOOP 74,019
 48,990
 603,665
 354,864
 677,684
 403,854
 192,863
 115,513
 578,470
 324,307
 771,333
 439,820
Northwest Cana 120,668
 73,777
 110,120
 71,314
 230,788
 145,091
Northwest Cana/STACK (1) 129,163
 79,762
 138,537
 75,459
 267,700
 155,221
Arkoma Woodford 110,973
 26,359
 4,568
 434
 115,541
 26,793
 110,560
 26,240
 3,388
 173
 113,948
 26,413
Other 100,710
 46,008
 197,434
 167,506
 298,144
 213,514
 80,796
 44,281
 112,280
 60,626
 193,076
 104,907
East Region 
 
 152,762
 144,363
 152,762
 144,363
 
 
 224,142
 204,012
 224,142
 204,012
Total 1,657,975
 1,014,285
 2,150,398
 1,530,985
 3,808,373
 2,545,270
 1,931,757
 1,154,403
 1,818,333
 1,194,875
 3,750,090
 2,349,278

(1) Represents acreage available for drilling in the Woodford formation (Northwest Cana) and the Meramec and Osage formations (STACK) overlying the Woodford. Included in this acreage are 38,600 total net acres of Woodford drilling rights in an area of mutual interest established under our Northwest Cana joint development agreement.

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The following table sets forth the number of gross and net undeveloped acres as of December 31, 2013 that are expected2015 scheduled to expire over the next three years by region unless production is established within the spacing units covering the acreage prior to the expiration dates or the leases are renewed. 
 2014 2015 2016 2016 2017 2018
 Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net
North Region:                        
Bakken field                        
North Dakota Bakken 126,232
 84,679
 143,555
 118,609
 107,462
 107,257
 158,625
 92,105
 76,643
 53,665
 25,417
 17,474
Montana Bakken 63,762
 51,399
 65,541
 46,973
 38,375
 36,632
 71,649
 43,457
 52,822
 34,576
 14,436
 9,567
Red River units 2,716
 1,377
 7,967
 5,423
 12,054
 12,042
 13,800
 10,190
 5,319
 3,227
 4,931
 3,444
Niobrara - Colorado/Wyoming 13,574
 8,800
 83,531
 45,692
 23,538
 10,816
Other 3,063
 1,873
 10,991
 4,101
 1,440
 588
 13,103
 5,879
 639
 256
 17,225
 17,129
South Region:                        
SCOOP 122,067
 71,061
 105,279
 58,198
 151,040
 81,042
 207,054
 110,529
 172,890
 104,626
 47,703
 37,209
Northwest Cana 34,804
 21,997
 27,686
 15,668
 33,024
 26,521
Northwest Cana/STACK 36,069
 23,657
 29,196
 15,202
 44,087
 25,819
Arkoma Woodford 1,040
 120
 
 
 
 
 
 
 
 
 
 
Other 1,202
 733
 85,919
 64,276
 15,932
 16,767
 48,716
 30,052
 40,946
 19,198
 3,834
 1,702
East Region 9,657
 7,486
 14,187
 9,760
 5,128
 4,695
 4,688
 4,319
 60,795
 52,840
 45
 134
Total 378,117
 249,525
 544,656
 368,700
 387,993
 296,360
 553,704
 320,188
 439,250
 283,590
 157,678
 112,478

Drilling Activity
During the three years ended December 31, 2013,2015, we drilled and completed exploratory and development wells as set forth in the table below:
 2013 2012 2011 2015 2014 2013
 Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net
Exploratory wells:                        
Crude oil 75
 51.5
 76
 37.0
 50
 23.4
 28
 19.8
 94
 70.5
 75
 51.5
Natural gas 40
 23.7
 78
 43.8
 109
 45.9
 19
 1.4
 42
 8.3
 40
 23.7
Dry holes 3
 2.1
 1
 1.0
 2
 1.3
 1
 1.0
 3
 1.6
 3
 2.1
Total exploratory wells 118
 77.3
 155
 81.8
 161
 70.6
 48
 22.2
 139
 80.4
 118
 77.3
Development wells:    ��                   
Crude oil 734
 250.9
 561
 211.3
 380
 126.1
 707
 215.5
 897
 290.3
 734
 250.9
Natural gas 26
 5.4
 5
 2.4
 17
 1.6
 142
 32.8
 64
 16.8
 26
 5.4
Dry holes 
 
 3
 1.1
 5
 0.6
 
 
 1
 1.0
 
 
Total development wells 760
 256.3
 569
 214.8
 402
 128.3
 849
 248.3
 962
 308.1
 760
 256.3
Total wells 878
 333.6
 724
 296.6
 563
 198.9
 897
 270.5
 1,101
 388.5
 878
 333.6
As of December 31, 2013,2015, there were 404417 gross (160.8(178 net) operated and non-operated wells that have been spud and are in the process of drilling, completing or waiting on completion.
AsFor 2016, we plan to operate an average of February 17, 2014, we operated 43approximately 19 drilling rigs on our properties.for the year. Our rig activity during 2014for 2016 will depend on potential drilling efficiency gains and crude oil and natural gas prices and potential drilling efficiency gains and, accordingly, our rig count may increase or decrease from currentplanned levels. There canAs a result of the significant decrease in commodity prices, the number of providers of materials and services has decreased in the regions where we operate. As a result, the likelihood of experiencing shortages of materials and services may be no assurance, however, that additional rigs will be available to us at an attractive cost.increased in connection with any period of commodity price recovery. See Part I, Item 1A. Risk Factors—The unavailability or high cost of additional drilling rigs, equipment, supplies, personnel and oilfield services could adversely affect our ability to execute our exploration and development plans within budget and on a timely basis.

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Summary of Crude Oil and Natural Gas Properties and Projects
ThroughoutIn the following discussion, we discussreview our budgeted number of wells and capital expenditures for 2014. Although we cannot provide any assurance, we believe2016 in our key operating areas. Our 2016 capital budget is reflective of the depressed commodity price environment and has been established based on an expectation of available cash flows. If cash flows from operations, remaining cash balance, and our credit facility, including our ability to increase our borrowing capacity thereunder, will be sufficient to satisfy our 2014 capital budget. We may choose to access the capital markets for additional financing to take advantage of business opportunities that may arise if such financing can be arranged at favorable terms. The actual amount and timing of our capital expenditures may differare materially from our estimates asimpacted by a result of, among other things, available cash flows, unbudgeted acquisitions, actual drilling results, the availability of drilling rigs and other services and equipment, the availability of transportation capacity, and regulatory, technological and competitive developments. Further, afurther decline in commodity prices, could cause uswe have the ability to curtailreduce our actual capital expenditures.expenditures or utilize the availability of our revolving credit facility if needed to fund our operations. Conversely, higher cash flows resulting from an increase in commodity prices could result in increased capital expenditures.
As referred to throughout this report, a “play” is a term applied to a portion of the explorationThe following table provides information regarding well counts and production cycle following the identification2016 budgeted capital expenditures by geologists and geophysicists of areas with potential crude oil and natural gas reserves. “Conventional plays” are areas believed to be capable of producing crude oil and natural gas occurring in discrete accumulations in structural and stratigraphic traps. “Unconventional plays” are areas believed to be capable of producing crude oil and natural gas occurring in accumulations that are regionally extensive, but generally require horizontal drilling, fracture stimulation treatments or other special recovery processes to achieve economic production. Unconventional plays tend to have low permeability and may be closely associated with source rock as is the case with oil and gas shale, tight oil and gas sands and coalbed methane. Our operations in unconventional plays include operations in the Bakken and Woodford plays and the Red River units. Our operations within conventional plays include operations in the Lodgepole of North Dakota, Morrow-Springer of western Oklahoma and Frio in south Texas. In general, unconventional plays require the application of more advanced technology and higher drilling and completion costs to produce relative to conventional plays. These technologies can include hydraulic fracturing treatments, horizontal wellbores, multilateral wellbores, or some other technique or combination of techniques to expose more of the reservoir to the wellbore.operating area.
References throughout this report to “3D seismic” refer to seismic surveys of areas by means of an instrument which records the travel time of vibrations sent through the earth and the interpretation thereof. By recording the time interval between the source of the shock wave and the reflected or refracted shock waves from various formations, geophysicists are better able to define the underground configurations. “3D defined locations” are those locations that have been subjected to 3D seismic testing. We typically use 3D seismic testing to evaluate reservoir presence and/or continuity. We do not typically evaluate reservoir productivity using 3D seismic technology.
  2016 Plan
  Gross wells
planned for
completion (1)
 Net wells
planned for
completion (1)
 Capital
expenditures 
(in millions)
  
North Region:      
North Dakota Bakken 127
 26
 $320
South Region:      
SCOOP 113
 25
 260
Northwest Cana 28
 11
 62
STACK 15
 9
 142
Total exploration and development drilling 283
 71
 $784
Land     78
Capital facilities, workovers and other corporate assets     55
Seismic     3
Total 2016 capital budget, excluding acquisitions     $920
(1)Represents wells expected to be drilled, completed, and producing in 2016 and excludes an expected increase in our drilled but uncompleted well inventory of 75 gross (47 net) wells during the year.
North Region
Our properties in the North region represented 82%63% of our PV-10 as of December 31, 20132015 and 75%66% of our average daily Boe production for the three months ended December 31, 2013. For the three months ended December 31, 2013, ourfourth quarter of 2015. Our average daily production from such properties was 108,545148,911 Boe per day for the fourth quarter of 2015, an increase of 30%3% over our average daily production for the three months ended December 31, 2012.comparable 2014 period. Our principal producing properties in the North region are located in the Bakken field and the Red River units.
Bakken Field
The Bakken field of North Dakota and Montana is one of the premier crude oil resource plays in the United States. In April 2013, the U.S. Geological Survey released an updated estimate of reserves located in the Bakken field. The assessment projects that the Bakken field contains an estimated mean of 7.4 billion barrels, with a potential of up to 11.4 billion barrels, of undiscovered, technically recoverable crude oil using current technology. Total production from the Bakken field reached a record 1.1 million barrels of oil equivalent ("MMBoe") per day in October 2013, up 39% over October 2012 based on data published by IHS Inc. and the North Dakota Industrial Commission. North Dakota remains the second largest oil producing state in the U.S. due to production growth in the Bakken field. As of December 31, 2013, there were 183 rigs actively drilling in the Bakken field.
We continue to beare a leading producer, leasehold owner and drilleroperator in the Bakken. As of December 31, 2015, we controlled one of the largest leasehold positions in the Bakken field. with approximately 1.71 million gross (1.05 million net) acres under lease.
Our total Bakken field production averaged 93,335136,355 Boe per day during the three months ended December 31, 2013,fourth quarter of 2015, up 38%4% from the 2014 fourth quarter due to additional drilling and completion activity. Despite depressed commodity prices in 2015, we continued to make progress with our average daily Bakken field productiondrilling program during the year which was almost entirely focused in North Dakota. Our 2015 drilling activity in North Dakota focused on the continued development of de-risked, higher rate-of-return areas in core parts of the play and the testing of various enhanced completion technologies to determine optimal methods for maximizing crude oil recoveries and rates of return.
In 2015, we completed 650 gross (181 net) wells in the three months ended December 31, 2012.Bakken. Our Bakken properties within the Bakken field represented 72%56% of our PV-10 as ofat December 31, 20132015 and 65%61% of our average daily Boe production for the three months ended December 31, 2013.2015 fourth quarter. Our total proved Bakken field reserves as of December 31, 20132015 were 741663 MMBoe, up 32% over ourwhich represents a decrease of 23% compared to December 31, 2014 due in part to downward reserve revisions in 2015 prompted by lower commodity prices and changes in drilling plans. Our inventory of proved Bakken field reservesundeveloped locations totaled 1,292 gross (705 net) wells as of December 31, 2015.
2012. As of December 31, 2013,2015, we controlled the largest leasehold positionoperated eightrigs in the Bakken, field with 1,779,877 gross (1,209,821 net) acres. Approximately 55%all in North Dakota, which we subsequently decreased to four operated rigs in early 2016. We plan to average approximately fouroperated rigs in North Dakota Bakken throughout 2016. We plan to operate fewer rigs in North Dakota Bakken in 2016 compared to 2015 as part of our net acreage was developedefforts to align our 2016 capital expenditures with cash flows in response to the continued decrease in crude oil prices in late 2015 and the remaining 45% was undeveloped as of December 31, 2013. As of December 31, 2013, we were the most active driller in the Bakken field, with 20 active operated rigs. As of December 31, 2013, we had completed 2,636 gross (1,025 net) wells in the Bakken field. Ourearly 2016.

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inventory of proved undeveloped drilling locations in the Bakken field as of December 31, 2013 totaled 1,964 gross (1,119 net) wells.
We made significant progress with our development and exploration drilling programs in the Bakken field during 2013, completing a total of 749 gross (267 net) wells. We have reduced our drilling and completion costs on operated North Dakota Bakken wells from approximately $9.2 million in 2012 to approximately $8.0 million in 2013. The largest contributors to these cost reductions are multi-well pad development which reduced the overall footprint of our operations, advancements in stimulation and drilling technology, rig moving and location construction. We exited the year with over 70% of our rig activity on multi-well pads.
Of particular note was the success of our exploration program in the lower layers or “benches” of the Three Forks formation which demonstrated that wells completed in the Lower Three Forks reservoirs may be productive over an area at least 3,800 square miles in size, adding potential incremental recoverable reserves to the Bakken field. We also had success expanding the field extents onto our undeveloped leasehold through our step-out drilling program and we completed the first of four pilot density projects initiated during the year. These pilot density projects are designed to help us determine the optimum drilling and spacing pattern for future development of the Bakken and Three Forks reservoirs. We also initiated a pilot secondary recovery project to evaluate the potential for increasing the ultimate recovery of crude oil from the Bakken field through secondary injection methods. Progress of these pilot projects is ongoing.
We plan to invest approximately $2.5 billion drilling 870 gross (287 net) wells in the Bakken field during 2014, of which approximately 84% is expected to be invested in North Dakota and the remaining 16% in Montana. We plan to exit 2014 with 23 rigs drilling in the Bakken field with 19 rigs located in North Dakota and 4 rigs in Montana.
North Dakota Bakken
Our production and reserve growth in the Bakken field during 2013 came primarily from our activities in North Dakota. Production increased to an average rate of 80,374 Boe per day during the three months ended December 31, 2013, up 36% over the 2012 fourth quarter. Proved reserves increased 33% year-over-year to 689 MMBoe as of December 31, 2013. Our North Dakota Bakken properties represented 65% of our PV-10 at December 31, 2013 and 56% of our average daily Boe production for the three months ended December 31, 2013. In 2013, we completed 678 gross (211 net) wells, bringing our total number of wells drilled in North Dakota Bakken to 2,267 gross (788 net) wells as of December 31, 2013. As of December 31, 2013, we had 1,405,576 gross (909,052 net) acres in the North Dakota Bakken field, of which 58% of the net acreage is developed and the remaining 42% is undeveloped. Our inventory of proved undeveloped locations stood at 1,904 gross (1,074 net) wells as of December 31, 2013.
Our 2013 drilling activity in North Dakota focused on (1) developing our derisked areas, (2) expanding the field vertically and horizontally through step-out exploration drilling and (3) pilot density drilling to determine optimum well spacing and pattern for full field development. We successfully achieved our 2013 objectives in each of these areas and expect to continue making progress with these initiatives in 2014.
Our exploration drilling in North Dakota focused primarily on evaluating the productivity of the Lower Three Forks "benches" which include the Three Forks 2 ("TF2"), Three Forks 3 ("TF3"), and the Three Forks 4 ("TF4") reservoirs. These benches are layers of dolomite reservoir rock that underlie the proven producing Upper Three Forks bench known as the Three Forks 1 ("TF1"). Core work we completed over a year ago showed that these Lower Three Forks benches contained crude oil but it was unknown if they would produce crude oil at economic rates. During 2013, we successfully conducted a 24 well exploration drilling program to test these Lower Three Forks benches and completed 13 gross (9.5 net) wells in the TF2, 9 gross (7.2 net) wells in the TF3 and 2 gross (1.6 net) wells in the TF4. Results demonstrated that wells completed in the TF2 and TF3 are capable of producing crude oil at rates comparable to the TF1 across an area over 3,800 square miles in size. This discovery is significant as these results suggest the TF2 and TF3 reservoirs may add incremental recoverable reserves to the Bakken field. Results from the TF4 wells are being evaluated to determine their productive capabilities. At December 31, 2013, we have recorded approximately 20 MMBoe of proved reserves associated with the TF2 and TF3 benches in North Dakota Bakken.
To further assess the incremental reserve potential of the Lower Three Forks reservoirs and determine the optimum drilling density and pattern to maximize crude oil recovery from the Bakken field, we initiated four pilot density drilling projects during 2013. A total of 44 wells were drilled in these four projects during 2013. The first of the four pilot density projects to be completed and put into production was our Hawkinson unit. It was the first 1,280-acre unit that was fully developed on 320-acre spacing in the Bakken field and included four Middle Bakken wells, three TF1 wells, four TF2 wells and three TF3 wells. These 14 wells produced at a maximum combined initial 24 hour production rate of 14,850 barrels of oil equivalent per day. The Hawkinson density pilot employed several state of the art technologies including the largest downhole microseismic monitoring survey ever conducted in the world. All of this was done to help us determine the best inter-well spacing and pattern for future development of the Bakken field. We are currently monitoring production from the Hawkinson unit and

11



incorporating the microseismic and technical data to assess performance. We also completed drilling operations on three additional pilot density projects in 2013 - the Tangsrud, Rollefstad, and Wahpeton projects - which we expect to begin producing during the first half of 2014. The Tangsrud and Rollefstad projects, like the Hawkinson project, are developing the Middle Bakken and first three benches of the Three Forks on 320-acre spacing while the Wahpeton project is developing the same zones on 160-acre spacing.
In 2014,2016, we plan to invest approximately $2.1 billion drilling 802$320 million to drill, complete and initiate production on 127 gross (240(26 net) wells in the North Dakota Bakken. Approximately 13% of the capital expenditures will be spent on exploratoryOur 2016 drilling which will include additional step-out drilling and three new pilot density projects. These new pilot density projects will further test the development of the Middle Bakken and first three benches of the Three Forks on 160-acre spacing. The remainder of the capital is expected to be spent drilling development wells in the field including our full field development program in the Antelope prospect in McKenzie and Williams Counties of North Dakota. This development drilling will be done using ECO-Pad technology. As of December 31, 2013, we had 16 operated rigs drilling in the North Dakota Bakken and plan to exit 2014 at 19 rigs.
Montana Bakken
Our Montana Bakken properties are located primarily within the Elm Coulee field in Richland County, Montana. Production from our Montana Bakken properties reached an all time high during the three months ended December 31, 2013, averaging 12,961 Boe per day over that period, up 52% from the average daily rate for the three months ended December 31, 2012. This reflects the success of our ongoing drilling program to optimize and expand our Montana Bakken properties. During 2013, we completed 71 gross (56 net) wells in Montana bringing our total number of wells drilled in Montana Bakken to 369 gross (237 net) wells as of December 31, 2013. As of December 31, 2013 our Montana Bakken properties represented 7% of our PV-10 and 9% of our average daily Boe production for the three months ended December 31, 2013. As of December 31, 2013, we had 374,301 gross (300,769 net) acres in Montana Bakken, of which 45% of the net acreage is developed and the remaining 55% is undeveloped. As of December 31, 2013, we had 60 gross (45 net) proved undeveloped locations identified in the Montana Bakken field.
In 2014, we plan to invest approximately $412 million drilling 68 gross (47 net) wells in the Montana Bakken. Our drilling will focus on additional infill development of Elm Coulee and continued expansiondrilling de-risked acreage in core parts of the Elm Coulee field onto ourplay that provide opportunities for converting undeveloped acreage northto acreage held by production, increasing capital efficiency, reducing finding and development costs, and maximizing rates of the field. As of December 31, 2013, we had 4 rigs operating in the Montana Bakken and plan to exit 2014 with the same number of rigs.return.
Red River Units
The Red River units are comprised of nine units located along the Cedar Creek Anticline in North Dakota, South Dakota and Montana that produce crude oil and natural gas from the Red River “B” formation, a thin continuous, dolomite formation at depths of 8,000 to 9,500 feet.formation. Our principal producing properties in the Red River units include the Cedar Hills units in North Dakota and Montana, the Medicine Pole Hills units in North Dakota, and the Buffalo Red River units in South Dakota. Our properties in the Red River units comprise a portion of the Cedar Hills field, which was listed by the U.S. Energy Information Administration in 2010 as the 9th largest onshore field in the lower 48 states of the United States ranked by 2009 proved liquid reserves.field.
All combined, our Red River units and adjacent areas represented 10%7% of our PV-10 as of December 31, 20132015 and 10%5% of our average daily Boe production for the three months ended December 31, 2013.fourth quarter of 2015. Our average daily production from these legacy properties decreased 2%12% in the fourth quarter of 20132015 compared to the 2012 fourth quarter. The relatively shallow decline in these mature properties isquarter of 2014 due to optimization effortsnatural declines in production and somereduced drilling activity. We undertook limited drilling activity. Proved reserves were 77 MMBoe asactivity in the Red River units in 2015, choosing instead to allocate capital to areas in North Dakota Bakken and Oklahoma that generate more attractive rates of December 31, 2013. We are continuingreturn. For 2016, we plan to extend the performance life of our propertiesinvest approximately $8 million in the Red River units primarily by improving our wateron well workover activities aimed at enhancing production and air injection efficiency and taking other measures to optimize production. Additional enhanced recovery via carbon dioxide injection is currently being studied. As of December 31, 2013, we had 156,703 gross (137,294 net) acres in the Red River units and adjacent areas, all of which is developed acreage.
We have allocated $39 million of our 2014 capital expenditure budget to the Red River units and adjacent areas to support one drilling rig. Additional capital will be used to support injection projects and continued investment in facilities and infrastructure.recoveries for these legacy properties.
North Region Marketing Activities
Crude Oil. We continue to build uponutilize a portfolio approach (rail and pipe) to marketingmarket our crude oil that began in 2008 with our first shipments of crude oil by rail out of the Williston Basin. During 2013,Accessing new pipeline transportation optionality that came online in 2015, we continuedshifted a significant portion of our efforts to shift Bakken crude oil salesfrom rail transportation to coastal markets in the United States with less dependence on currently available pipeline markets. Rail transportation costs are typically higher than pipeline transportation costs per barrel mile, but market prices realized in U.S. coastal markets continue to be competitive with currently available pipeline markets.during the year. We plan to continue pursuing this

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with a portfolio approach to balance volumes delivered to pipeline and rail market destinationsreach the optimum markets in an effort to maximize net wellhead value.
Transportation infrastructure continues to improve in the North region with gathering systems picking upvalue for our crude oil at well site storage tanks with subsequent delivery to railhead or regional pipeline terminals, thereby reducing dependence on truck deliveries. We expect more of our North region crude oil will be shipped in this fashion through the coming years, especially as we accelerate development drilling using ECO-Pad technology.production.
Natural Gas. Field infrastructure build-out continued in the Williston Basin in 20132015 as third party midstream gathering and processing companies expanded field gathering and compression facilities, cryogenic processing capacity and natural gas liquids (“NGL”) pipeline and rail capacity to market centers. In 2013,2015, we continued to make notable progressbe a leader in adhering to ourminimizing natural gas flaring reduction initiatives.in North Dakota. For the year ended December 31, 2013, the percentage2015, we delivered approximately 87% of our operated natural gas production flared in North Dakota Bakken was less than 11%,to market, flaring approximately 13% compared to 15%an average of 18% flared by industry peers operating in 2012 and 19% in 2011. We expect to further reduce this amount as we continue to build out infrastructure and transition to a greater use of ECO-Pad development in 2014 and beyond.the play.
South Region
Our properties in the South region represented 18%37% of our PV-10 as of December 31, 20132015 and 25%34% of our average daily Boe production for the three months ended December 31, 2013.fourth quarter of 2015. For the three months ended December 31, 2013,2015 fourth quarter, our average daily production from such properties was 35,70976,025 Boe per day, up 58%an increase of 56% from the samecomparable period in 2012.2014. Our principal producing properties in thisthe South region are located in the emergingSCOOP, Northwest Cana and STACK areas of Oklahoma.
SCOOP
The SCOOP play in south-central Oklahoma.
SCOOP
Our SCOOP properties are located in southern Oklahoma primarily incurrently extends across Garvin, Grady, Stephens, Carter, McClain and Love Counties.Counties in Oklahoma and contains crude oil and condensate-rich fairways as delineated by numerous industry wells. Our SCOOP leasehold has the potential to contain hydrocarbons from a variety of conventional and unconventional reservoirs overlying and underlying the Woodford formation in Oklahoma. In 2014, our drilling activities resulted in the vertical expansion of our SCOOP position and discovery of the Springer formation, which is located approximately 1,000 to 1,500 feet above the Woodford formation. Located in the heart of our SCOOP acreage, our Springer position supplements our Woodford leasehold and expands our resource potential and inventory in the play. Our 2015 drilling activity in SCOOP focused on expanding the known productive extents of the SCOOP Woodford and SCOOP Springer formations and continued development of de-risked, higher rate-of-return areas in core parts of the play. Also, in 2015 we began operation of water recycling facilities in the SCOOP area that economically reuse stimulation water for both operational efficiencies and environmental benefits.
We are a leading producer, leasehold owner and operator in the SCOOP play. As of December 31, 2015, we controlled one of the largest leasehold positions in SCOOP with approximately 771,300 gross (439,800 net) acres under lease. SCOOP represented 16%31% of our PV-10 as of December 31, 20132015 and 17%29% of our average daily Boe production for the three months ended December 31, 2013.fourth quarter of 2015. For the year ended December 31, 2013,2015, SCOOP production grew 318%75% over 20122014 due to the continued success of our increased drilling activity in the play. For the three months ended December 31, 2013,We completed 204 gross (74 net) wells in SCOOP production averaged 23,754 Boe per day, up 233% over our average daily production for the three months ended December 31, 2012. Asduring 2015. Proved reserves increased 12% year-over-year to 413 MMBoe as of December 31, 2013, we held 677,684 gross (403,854 net) acres under lease in SCOOP,2015, of which 12% of the net acreage was32% represents proved developed and the remaining 88% of the net acreage was undeveloped.reserves. Our inventory of proved undeveloped drilling locations in SCOOP as of December 31, 20132015 totaled 309370 gross (153(224 net) wells.

We completed 77 gross (42 net) wells in SCOOP during 2013 and as of December 31, 2013 we had completed a total of 145 gross (79 net) wells in SCOOP. Our 2013 drilling program included exploration, step-out and development wells focused on de-risking the play and holding our acreage by production. The year 2013 was a particularly impactful year for SCOOP as our drilling results and results from others in the industry established both a crude oil and condensate rich, natural gas producing fairway that combined is approximately 20 miles wide and 120 miles long. Based on our 2013 drilling results, SCOOP is proving to be another significant asset for the Company with considerable potential for production and reserve growth.
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A possible upside to SCOOP is the potential to encounter additional pay from a variety of conventional and potential unconventional reservoirs overlying and underlying the Woodford formation. There are over 60 different conventional reservoirs known to produce in the SCOOP area. These conventional reservoirs have the potential to produce locally under our SCOOP acreage.


In 2014,2016, we plan to invest approximately $865$260 million to drill, 159complete and initiate production on 113 gross (72(25 net) wells in the SCOOP play. Approximately 40% of these wells will be multi-unit wells. Multi-unit wells enable us to drill two spacing units from one location, which reduces well costs and our overall surface footprint. The 2014Our 2016 drilling program will continue to focus on expanding the known productive extents of the SCOOP Woodford and SCOOP Springer formations and de-risking our acreage. It will also include pilot density projectsacreage, while focusing on areas that provide opportunities for converting undeveloped acreage to determine the optimum well spacingacreage held by production, increasing capital efficiency, reducing finding and pattern for full scale development costs, and maximizing rates of SCOOP in the future. We also expect to invest approximately $19 million to acquire approximately 230 square miles of additional proprietary 3D seismic data to guide future drilling.return. As of December 31, 2013,2015, we had 18six operated rigs drilling in the SCOOP play.play and plan to average approximately five to six operated rigs throughout 2016.
Northwest Cana and STACK
Our Northwest Cana properties are located primarily in Blaine, Dewey and Custer Counties of Oklahoma and primarily target the Woodford formation. In September 2014, we entered into an agreement with a U.S. subsidiary of SK E&S Co. Ltd (“SK”) of South Korea to jointly develop a significant portion of our Northwest Cana natural gas properties, primarily in Blaine and Dewey counties. Under the agreement, SK has committed to fund, or carry, 50% of our share of certain future drilling and completion costs through September 2019, which has enabled us to generate favorable economics and value from previously idle properties in Northwest Cana. As of December 31, 2015, we had five operated rigs drilling in Northwest Cana and plan to average approximately five operated rigs throughout 2016 to capitalize on the favorable economics provided by our joint development agreement with SK. In 2016, we plan to invest approximately $62 million to drill, complete and initiate production on 28 gross (11 net) wells in Northwest Cana within the area of mutual interest with SK.
In 2015, we added the STACK play to our portfolio of assets through our leasing and drilling efforts. STACK, an acronym for Sooner Trend Anadarko Canadian Kingfisher, is a significant new resource play located in the Anadarko Basin of Oklahoma characterized by stacked geologic formations with major targets in the Meramec and Osage formations overlying the Woodford formation. A significant portion of our STACK acreage is located in over-pressured portions of Blaine, Dewey and Custer Counties of Oklahoma where we believe the reservoirs are typically thicker and deliver superior production rates relative to normal-pressured areas of the STACK petroleum system. Our drilling in STACK is in the early stages and production has just recently begun to grow. We anticipate the economics from our STACK properties will compare favorably with our SCOOP and North Dakota Bakken assets and will provide value-added opportunities for the Company. As of December 31, 2015, we had fouroperated rigs drilling in STACK and we plan to average approximately four to five operated rigs throughout 2016. In 2016, we plan to invest approximately $142 million to drill, complete and initiate production on 15 gross (9 net) wells in STACK. Our 2016 activities will be focused on delineating and de-risking our acreage, monitoring production, and further developing our geologic and economic models in the area.
Combined, our Northwest Cana and STACK properties represented 5% of our PV-10 as of December 31, 2015 and 3% of our average daily Boe production for the fourth quarter of 2015. As of December 31, 2015, we held a total of 155,221 net acres under lease in Northwest Cana and STACK, representing acreage available for drilling in the Woodford formation (Northwest Cana) and the Meramec and Osage formations (STACK) overlying the Woodford and inclusive of 38,600 total net acres of Woodford drilling rights in the area of mutual interest established under our Northwest Cana joint development agreement with SK.
Combined production in Northwest Cana and STACK increased to an average rate of 7,709 Boe per day during the fourth quarter of 2015, up 104% over the 2014 fourth quarter due to additional drilling and completion activity resulting from our drilling program. We completed a combined 26 gross (10 net) wells in Northwest Cana and STACK during 2015. Proved reserves totaled 84 MMBoe as of December 31, 2015, of which 25% represents proved developed reserves. Our combined inventory of proved undeveloped locations stood at 198 gross (66 net) wells as of December 31, 2015.
South Region Marketing Activities
Crude Oil. Due to the proximity of ourOur South region operationsproduction is located in relatively close proximity to regional refineries as well as the market centercrude oil trading hub located in Cushing, Oklahoma,Oklahoma. Because of this close proximity to local markets as well as Cushing, we typically sellare able to market our South region production directlywith the intent of capturing the best market prices available depending on the crude oil grade and location. We use the competition among refineries, midstream companies, and bulk traders in an effort to midstream trading and transportation companies at themaximize wellhead with price realizations that correlate with WTI benchmark pricing. We anticipate continuing this approach through early 2015 and to begin delivery of production fromvalue for our SCOOP properties via wellhead pipeline gathering and intrastate pipeline systems directly into Cushing as field infrastructure is constructed and developed.crude oil production.

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Natural Gas. In 2013,2015, field infrastructure build-out continued at a rapid pace in the Anadarko Basin and in SCOOP as third party midstream gathering and processing companies expanded field gathering and compression facilities, cryogenic processing capacity and NGL pipeline capacity to market centers. On January 1, 2016 a third party placed a new lateral into service that connects to an existing plant which provides a connection to an interstate pipeline system for sales to downstream customers.
Throughout our South region leasehold, we are coordinating our well completion operations to coincide with well connections to gathering systems in order to minimize greenhouse gas emissions. We continue to assess downstream transportation options

14



and have developed relationships with downstream transport and end-use customers for possible future portfolio pricing benefits.
Production and Price History
The following table sets forth summary information concerning our production results, average sales prices and production costs for the years ended December 31, 2013, 20122015, 2014 and 20112013 in total and for each field containing 15 percent or more of our total proved reserves as of December 31, 2013:2015: 
 Year ended December 31, Year ended December 31,
 2013 2012 2011 2015 2014 2013
Net production volumes:            
Crude oil (MBbls) (1)            
North Dakota Bakken 23,513
 15,936
 8,480
 37,539
 30,917
 23,513
SCOOP 2,004
 478
 96
 7,198
 3,652
 2,004
Total Company 34,989
 25,070
 16,469
 53,517
 44,530
 34,989
Natural gas (MMcf)            
North Dakota Bakken 26,783
 16,454
 7,523
 47,425
 33,610
 26,783
SCOOP 29,438
 7,060
 1,927
 91,687
 55,017
 29,438
Total Company 87,730
 63,875
 36,671
 164,454
 114,295
 87,730
Crude oil equivalents (MBoe)            
North Dakota Bakken 27,977
 18,679
 9,733
 45,444
 36,518
 27,977
SCOOP 6,910
 1,654
 417
 22,479
 12,822
 6,910
Total Company 49,610
 35,716
 22,581
 80,926
 63,579
 49,610
Average sales prices: (2)            
Crude oil ($/Bbl)            
North Dakota Bakken $89.45
 $84.50
 $88.43
 $39.76
 $80.22
 $89.45
SCOOP 95.63
 89.37
 93.02
 43.98
 87.58
 95.63
Total Company 89.93
 84.59
 88.51
 40.50
 81.26
 89.93
Natural gas ($/Mcf)            
North Dakota Bakken $6.26
 $5.55
 $7.18
 $2.34
 $6.63
 $5.94
SCOOP 5.59
 4.01
 7.56
 2.39
 5.23
 5.25
Total Company 5.25
 4.20
 5.24
 2.31
 5.40
 4.87
Crude oil equivalents ($/Boe)            
North Dakota Bakken $81.17
 $76.95
 $82.56
 $35.29
 $73.96
 $80.87
SCOOP 51.55
 34.01
 56.30
 23.81
 47.35
 50.08
Total Company 72.71
 66.83
 73.05
 31.48
 66.53
 72.04
Average costs per Boe: (2)            
Production expenses ($/Boe)            
North Dakota Bakken $5.50
 $4.31
 $4.05
 $4.79
 $5.67
 $5.50
SCOOP 0.99
 1.02
 1.30
 1.10
 1.13
 0.99
Total Company 5.69
 5.49
 6.13
 4.30
 5.58
 5.69
Production taxes and other expenses ($/Boe) $6.69
 $6.42
 $6.42
 $2.47
 $5.54
 $6.02
General and administrative expenses ($/Boe) (3) $2.91
 $3.42
 $3.23
 $2.34
 $2.92
 $2.91
DD&A expense ($/Boe) $19.47
 $19.44
 $17.33
 $21.57
 $21.51
 $19.47
(1)Crude oil sales volumes differ from production volumes because, at various times, we have stored crude oil in inventory due to pipeline line fill requirements, low commodity prices, or transportation constraintsmarketing disruptions or we have sold crude oil from inventory. Crude oil sales volumes were 147 MBbls more than production volumes for 2015, 408 MBbls less than production volumes for 2014, and 4 MBbls less than production volumes for the year ended December 31, 2013,2013.

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112 MBbls less than production volumes for the year ended December 31, 2012 and 30 MBbls less than production volumes for the year ended December 31, 2011.
(2)Average sales prices and per unit costs have been calculated using sales volumes and exclude any effect of derivative transactions.

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(3)General and administrative expense ($/Boe) includes non-cash equity compensation expenses of $0.64 per Boe, $0.86 per Boe, and $0.80 per Boe $0.82 per Boe,for 2015, 2014 and $0.73 per Boe for the years ended December 31, 2013, 2012 and 2011, respectively, and corporate relocation expenses of $0.04 per Boe $0.22 per Boe and $0.14 per Boe for the years ended December 31, 2013, 2012, and 2011, respectively.2013.
The following table sets forth information regarding our average daily production by region duringfor the fourth quarter of 2013:2015: 
 Fourth Quarter 2013 Daily Production Fourth Quarter 2015 Daily Production
 Crude Oil
(Bbls per day)
 Natural Gas
(Mcf per day)
 Total
(Boe per day)
 Crude Oil
(Bbls per day)
 Natural Gas
(Mcf per day)
 Total
(Boe per day)
North Region:            
Bakken field            
North Dakota Bakken 67,164
 79,263
 80,374
 102,785
 136,785
 125,583
Montana Bakken 11,422
 9,237
 12,961
 9,142
 9,785
 10,772
Red River units            
Cedar Hills 10,101
 2,382
 10,498
 8,353
 1,829
 8,658
Other Red River units 3,468
 2,592
 3,900
 2,560
 2,619
 2,996
Other 367
 2,672
 812
 188
 4,281
 902
South Region:            
SCOOP 6,567
 103,121
 23,754
 20,766
 262,608
 64,534
Northwest Cana 542
 36,920
 6,696
Northwest Cana/STACK 1,242
 38,800
 7,709
Arkoma Woodford 4
 16,594
 2,769
 3
 12,724
 2,124
Other 808
 10,085
 2,490
 537
 6,729
 1,658
Total 100,443
 262,866
 144,254
 145,576
 476,160
 224,936
Productive Wells
Gross wells represent the number of wells in which we own a working interest and net wells represent the total of our fractional working interests owned in gross wells. The following table presents the total gross and net productive wells by region and by crude oil or natural gas completion as of December 31, 2013:2015. One or more completions in the same well bore are counted as one well.
  Crude Oil Wells Natural Gas Wells Total Wells
  Gross     Net     Gross     Net     Gross     Net    
North Region:            
Bakken field            
North Dakota Bakken 2,261
 778
 6
 1
 2,267
 779
Montana Bakken 361
 232
 2
 1
 363
 233
Red River units 

 

 

 

 

 

Cedar Hills 136
 130
 
 
 136
 130
Other Red River units 145
 131
 
 
 145
 131
Other 33
 15
 4
 1
 37
 16
South Region:           
SCOOP 45
 23
 96
 51
 141
 74
Northwest Cana 11
 6
 157
 67
 168
 73
Arkoma Woodford 3
 
 397
 59
 400
 59
Other 208
 162
 232
 115
 440
 277
Total 3,203
 1,477
 894
 295
 4,097
 1,772
As of December 31, 2013, we did not own interests in any wells containing multiple completions.
  Crude Oil Wells Natural Gas Wells Total Wells
  Gross     Net     Gross     Net     Gross     Net    
North Region:            
Bakken field            
North Dakota Bakken 3,700
 1,196
 
 
 3,700
 1,196
Montana Bakken 421
 272
 2
 1
 423
 273
Red River units           

Cedar Hills 137
 132
 
 
 137
 132
Other Red River units 134
 120
 
 
 134
 120
Other 9
 4
 16
 4
 25
 8
South Region:           
SCOOP 180
 123
 321
 97
 501
 220
Northwest Cana/STACK 14
 10
 176
 57
 190
 67
Arkoma Woodford 1
 
 383
 56
 384
 56
Other 176
 136
 199
 96
 375
 232
Total 4,772
 1,993
 1,097
 311
 5,869
 2,304

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Title to Properties
As is customary in the crude oil and natural gas industry, upon initiation of leasing fee leasing ofmineral interests on undeveloped leaseholdlands which doesdo not have associated proved reserves, contract landmen conduct a title examination of courthouse records.records to determine fee mineral ownership. Such title examinations are reviewed and approved by Company landmen. Prior to closingUpon entering into a purchase and sale agreement for an acquisition from a third party, whether lands are producing crude oil and natural gas leases or non-producing, Company and contract landmen perform title examinations at applicable courthouses and examine the seller's internal land, legal, well, marketing and accounting records including existing title opinions. We may also procure an acquisition title opinion dependingfrom outside legal counsel on the materiality of the properties involved.higher value properties.
Prior to the commencement of drilling operations, on any property, we procure aan original title opinion, or supplement an existing title opinion, from externaloutside legal counsel and perform curative work necessary to satisfy requirements pertaining to material title defects.defects, if any. We generally will not commence drilling operations on a property until we have cured material title defects on such property.as to the Company's interest.
We have procured title opinions and cured title opinionsmaterial defects as to Company interests on substantially all of our producing properties and believe we have defensible title to our producing properties in accordance with standards generally accepted in the crude oil and natural gas industry. Our crude oil and natural gas properties are subject to customary royalty and other interests and otherleasehold burdens which we believe do not materially interfere with the use of the properties or affect our carrying value of such properties.
Marketing and Major Customers
Most of our crude oil production is sold to end userscrude oil refining companies at major market centers. Other production not sold at major market centers is sold to select midstream marketing companies or crude oil refining companies at the lease. We have significant production directly connected to pipeline gathering systems, with the remaining balance of our production being transported by truck or rail. Where directly marketed crude oil is transported by truck, it is delivered to the most practicala point on a connected pipeline system for delivery to a sales point “downstream” on another connecting pipeline. CrudeWhen crude oil is sold at the lease is delivered directly onto the purchaser’s truck and the sale is complete at that point.
As a resultThe majority of pipeline constraints, the continuous increase in Williston Basin production, and our desire to transport our crude oil to U.S. coastal markets which provide favorable pricing, in December 2013 we transported approximately 70% of our operated crude oil production from our North region by rail. We are using both manifest and unit train facilities for these shipments and anticipate these shipments will continue.
We have a strategic mix of gas transport, processing and sales arrangements for our natural gas production. Our natural gas production is sold at various points along the market chain from wellheadour lease locations to points downstreammidstream purchasers under monthly interruptible packaged-volume deals, short-term seasonal packages, and long-termterm contracts. These contracts include multi-year term agreements with acreage dedication type contracts. All of our natural gas is sold at market.dedication. Some of our contracts allow us the flexibility to sellaccept, as partial payment for our sale of gas in the field, an “in-kind” volume of processed gas at the well or,tailgate of the midstream purchaser’s processing plant. When we elect to do so, we transport this processed gas to a downstream market where it is sold. Sales at these downstream markets are mostly under monthly interruptible packaged volume deals, short term seasonal packages, and long term multi-year contracts. We continue to develop relationships and have potential future contracts with notice, take our gas “in-kind”, transport, process,end-use customers, including utilities, industrial users, and sell in the market area. Midstreamliquefied natural gas gathering and processing companies areexporters, for sale of gas we elect to take in-kind in lieu of cash for our primary transporters and purchasers.leasehold sales.
Our marketing of crude oil and natural gas can be affected by factors beyond our control, the effects of which cannot be accurately predicted. For a description of some of these factors, see Part I, Item 1A. Risk factors—Our business depends on crude oil and natural gas transportation, processing and refining facilities, most of which are owned by third parties, and on the availability of rail transportation.
For the yearsyear ended December 31, 2013, 2012 and 2011,2015, sales to Marathon Crude OilPhillips 66 Company accounted for approximately 12%, 21% and 41% of our total crude oil and natural gas revenues, respectively. Sales to United Energy Trading accounted for approximately 11% of our total crude oil and natural gas revenues for both of the years ended December 31, 2013 and 2012. Additionally, sales to Tesoro Refining and Marketing Company accounted for approximately 15% of our total crude oil and natural gas revenues for the year ended December 31, 2013.revenues. No other purchasers accounted for more than 10% of our total crude oil and natural gas revenues for 2013, 2012 and 2011.2015. We believe the loss of our largestany single purchaser would not have a material adverse effect on our operations, as crude oil and natural gas are fungible products with well-established markets and numerous purchasers in our producingvarious regions.
Competition
We operate in a highly competitive environment for acquiring properties, marketing crude oil and natural gas and securing trained personnel. Also, there is substantial competition for capital available for investment in the crude oil and natural gas industry. Our competitors vary within the regions in which we operate, and some of our competitors may possess and employ financial, technical and personnel resources greater than ours, which can be particularly important in the areas in which we operate. Those companies may be able to pay more for productive crude oil and natural gas properties and exploratory prospects and to evaluate, bid for and purchase a greater number of properties and prospects than our financial or personnel

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resources permit. In addition, shortages or the high cost of drilling rigs, equipment or other services could delay or adversely affect our development and exploration operations. Our ability to acquire additional prospects and to find and develop reserves in the future will depend on our ability to evaluate and select suitable properties and to consummate transactions economically in a highly competitive environment. In addition, as a result of the significant decrease in commodity prices, the number of providers of materials and services has decreased in the regions where we operate. As a result, the likelihood of experiencing competition and shortages of materials and services may be increased in connection with any period of commodity price recovery.

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Regulation of the Crude Oil and Natural Gas Industry
All of ourOur operations are conducted onshore almost entirely in the United States. The crude oil and natural gas industry in the United States is subject to various types of regulation at the federal, state and local levels. Laws, rules, regulations, policies, and interpretations affecting our industry have been and are pervasive and are continuously reviewed by legislators and regulators, includingresulting in the imposition of new or increased requirements on us and other industry participants. Applicable laws and regulations and other requirements affecting our industry and its members often carry substantial penalties for failure to comply. SuchThese requirements may have a significant effect on the exploration, development, production and sale of crude oil and natural gas. These requirementsgas and increase the cost of doing business and consequently, affect profitability. We believe we are in substantial compliance with all laws and regulations and policies currently applicable to our operations and our continued compliance with existing requirements will not have a material adverse impact on us. However,In addition, because public policy changes affecting the crude oil and natural gas industry are commonplace and because laws, rules and regulations may be enacted, amended or reinterpreted, we are unable to predict the future cost or impact of complying with such laws, rules and regulations. We do not expect any future legislative or regulatory initiatives will affect our operationsus in a manner materially different than they would affect our similarly situated competitors.
FollowingThe following is a discussion of significant laws, rules and regulations that may affect us in the areas in which we operate.
Regulation of sales and transportation of crude oil and natural gas liquids
Sales of crude oil and natural gas liquids or condensate in the United States are not currently subject to price controls and are made at negotiated prices. Nevertheless, the U.S. Congress could enact price controls in the future. TheSince the 1970s, the United States does regulatehas regulated the exportation of petroleum and petroleum products, and these regulations could restrictwhich restricted the markets for these commodities and thus affectaffected sales prices. However, in December 2015, the U.S. Congress passed a legislative bill eliminating the export restrictions.
With regard to our physical sales of crude oil and any derivative instruments relating to crude oil, we are required to comply with anti-market manipulation laws and related regulations enforced by the Federal Trade Commission (“FTC”) and the Commodity Futures Trading Commission (“CFTC”). See the discussion below of “Other Federal Laws and Regulations Affecting Our Industry—FTC and CFTC Market Manipulation Rules.” ShouldIf we violate the anti-market manipulation laws and regulations, we could be subject to substantial penalties and related third-party damage claims by, among others, sellers, royalty owners and taxing authorities.
Our sales of crude oil are affected by the availability, terms and costs of transportation. The transportation of crude oil and NGLs, as well as other liquid products, is subject to rate and access regulation. The Federal Energy Regulatory Commission (“FERC”) regulates interstate crude oil and NGL pipeline transportation rates under the Interstate Commerce Act and the Energy Policy Act of 1992 and the rules and regulations promulgated under those laws. In general, pipeline rates must be just and reasonable and must not be unduly discriminatory or confer any undue preference upon any shipper. Oil and other liquid pipeline rates are often cost-based, although many pipeline charges today are based on historical rates adjusted for inflation and other factors, and other charges may result from settlement rates agreed to by all shippers or market-based rates, which are permitted in certain circumstances. FERC or interested persons may challenge existing or changed rates or services. Intrastate crude oil and NGL pipeline transportation rates may be subject to regulation by state regulatory commissions. The basis for intrastate pipeline regulation, and the degree of regulatory oversight and scrutiny given to intrastate crude oil pipeline rates, varies from state to state. Insofar as the interstate and intrastate transportation rates we pay are generally applicable to all comparable shippers, we believe the regulation of intrastate transportation rates will not affect our operationsus in a way that materially differs from the effect on the operations of our competitors who are similarly situated.situated competitors.
Further, interstate pipelines and intrastate common carrier pipelines must provide service on an equitable basis. Under this standard, such pipelines must offer service to all similarly situated shippers requesting service on the same terms and under the same rates. When such pipelines operate at full capacity, access is governed by prorating provisions, which may be set forth in the pipelines’ published tariffs. We believe we generally will have access to crude oil pipeline transportation services to the same extent as our similarly situated competitors.
AWe transport a portion of our North regionthe operated crude oil production is shippedfrom our North region to market centers using rail transportation facilities owned and operated by third parties.parties, with approximately 17% of such production being shipped by rail in December 2015. The U.S. Department of Transportation’s (“U.S. DOT”) Pipeline and Hazardous Materials Safety Administration (“PHMSA”) establishes safety regulations relating to crude-by-rail transportation. In addition, thirdThird party rail operators are subject to the regulatory jurisdiction of the Surface Transportation Board of the U.S. DOT, the Federal Railroad Administration (“FRA”) of the U.S. DOT, OSHA,the Occupational Safety and Health Administration, as well as other federal regulatory agencies. Additionally, various state and local

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agencies have jurisdiction over disposal of hazardous waste and seek to regulate movement of hazardous materials in waysif not preempted by federal law.

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In response to rail accidents occurring between 2002 and 2008, the U.S. Congress passed the Rail Safety and Improvement Act, of 2008, which implemented regulations governing different areas related to railroad safety. Recently, in response to train derailments occurring in the United States and Canada in 2013, U.S. regulators are implementing or considering new rules to address the safety risks of transporting crude oil by rail. On January 23, 2014, the National Transportation Safety Board (“NTSB”) issued a series of recommendations toMore recently, the FRA and PHMSA have undertaken several actions to address safety risks,enhance the safe transport of crude oil, including (i)but not limited to: issuing an order requiring proper testing, classification and handling of crude oil as a hazardous material; requiring expanded hazardous material route planning for railroads to avoid populated and other sensitive areas, (ii)areas; issuing safety advisories, alerts, emergency orders and regulatory updates; conducting special unannounced inspections; moving forward with rulemaking to develop an audit program to ensure rail carriers that carry petroleum products have adequate response capabilities to address worst-case discharges ofenhance tank car standards for certain trains carrying crude oil and ethanol; and reaching agreement with the entire quantity of product carriedrailroad industry on a train, and (iii)series of voluntary actions it can take to audit shippers and rail carriers to ensure they are properly classifying hazardous materialsimprove safety. Notably, in transportation and that they have adequate safety and security plans in place. Additionally, on February 25,May 2014 the U.S. Department of TransportationDOT issued an emergency order requiring all persons, prior to offering petroleumrailroads operating trains containing large amounts of Bakken crude oil into transportation, to ensurenotify state emergency response commissions about the operation of such product is properly tested and classed and to assure all shipments by railtrains through their states. The order requires each railroad operating trains containing more than 1,000,000 gallons of petroleumBakken crude oil, or approximately 35 tank cars, in a particular state to provide the state with notification regarding the volumes of Bakken crude oil being transported, frequencies of anticipated train traffic and the route through which Bakken crude oil will be handled astransported.  Also in May 2014, the FRA and PHMSA issued a Packing Group I or II hazardous material.safety advisory to the rail industry strongly recommending the use of tank cars with the highest level of integrity in their fleet when transporting Bakken crude oil. In May 2015, PHMSA issued a final rule which requires, among other things, enhanced tank car standards for new and existing tank cars, a classification and testing program for crude oil, and a requirement that older DOT-111 tank cars be retrofitted to comply with new tank car design standards in accordance with a specified timeline beginning in May 2017.

We do not currently own or operate rail transportation facilities or rail cars; however, the adoption of any regulations that impact the testing or rail transportation of crude oil could increase our costs of doing business and limit our ability to transport and sell our crude oil at favorable prices at market centers throughout the United States, the consequences of which could have a material adverse effect on our financial condition, results of operations and cash flows. At this time, it is not possibleWe are unable to estimate the potential impact on our business ifassociated with new federal or state rail transportation regulations; however, we do not expect such regulations will affect us in a materially different way than similarly situated competitors.
At the state level, in December 2014 the North Dakota Industrial Commission ("NDIC") introduced new rules designed to reduce the potential flammability of crude oil produced from the Bakken petroleum system (the Bakken, Three Forks, and Sanish Pool formations) before it is loaded on railcars and transported. The rules, which became effective in April 2015, outline a series of standards for pressure and temperature for production facilities to follow in order to separate certain liquids and gases from the crude oil prior to transport. The regulations are enacted.designed to leave the crude oil with a vapor pressure of no more than 13.7 pounds per square inch ("psi") compared to national standards that require 14.7 psi. While the new rules could increase the cost of doing business in North Dakota, we do not expect these changes to have a material impact on us nor will they affect us in a way that materially differs from our similarly situated competitors.
Regulation of sales and transportation of natural gas
In 1989, the U.S. Congress enacted the Natural Gas Wellhead Decontrol Act, which removed all remaining price and non-price controls affecting wellhead sales of natural gas. The FERC, which has the authority under the Natural Gas Act (“NGA”) to regulate prices, terms, and conditions for the sale of natural gas for resale in interstate commerce, has issued blanket authorizations for all gas resellers subject to FERC regulation, except interstate pipelines, to resell natural gas at market prices. However, either the U.S. Congress or the FERC (with respect to the resale of gas in interstate commerce) could re-impose price controls in the future. The U.S. Department of Energy (“U.S. DOE”) regulates the terms and conditions for the exportation and importation of natural gas (including liquefied natural gas or “LNG”). U.S. law provides for very limited regulation of exports to and imports from any country that has entered into a Free Trade Agreement (“FTA”) with the United States that provides for national treatment of trade in natural gas; however, the U.S. DOE’s regulation of imports and exports from and to countries without such FTAs is more comprehensive. The FERC also regulates the construction and operation of import and export facilities, including LNG terminals. Regulation of imports and exports and related facilities may materially affect natural gas markets and sales prices.
The FERC regulates interstate natural gas transportation rates and service conditions under the NGA and the Natural Gas Policy Act of 1978 (“NGPA”), which affects the marketing of natural gas we produce, as well as revenues we receive for sales of our natural gas. The FERC has endeavored to make natural gas transportation more accessible to natural gas buyers and sellers on an open and non-discriminatory basis. The FERC has stated that open access policies are necessary to improve the competitive structure of the natural gas pipeline industry and to create a regulatory framework that willto put natural gas sellers into more direct contractual relations with natural gas buyers by, among other things, unbundling the sale of natural gas from the sale of transportation and storage services. The FERC has issued a series of orders to implement its open access policies. As a result, the interstate pipelines’ traditional role as wholesalers of natural gas has been eliminated and replaced by a structure under which pipelines provide transportation and storage services on an open access basis to others who buy and sell natural gas. Although the FERC’s orders do not directly regulate natural gas producers, they are intended to foster increased competition within all phases of the natural gas industry. We cannot provide any assurance that the pro-competitive regulatory

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approach established by the FERC will continue. However, we do not believe any action taken will affect us in a materially different way than othersimilarly situated natural gas producers.
With regard to our physical sales of natural gas and any derivative instruments relating to natural gas, we are required to observe anti-market manipulation laws and related regulations enforced by the FERC and the CFTC. See the discussion below of “Other Federal Laws and Regulations Affecting Our Industry—FTC and CFTC Market Manipulation Rules.” ShouldIf we violate the anti-market manipulation laws and regulations, we could be subject to substantial penalties and related third-party damage claims by, among others, sellers, royalty owners and taxing authorities. In addition, pursuant to various FERC orders, we may be required to submit reports to the FERC for some of our operations. See the discussion below of “Other Federal Laws and Regulations Affecting Our Industry—FERC Market Transparency and Reporting Rules.”

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Gathering service, which occurs upstream of jurisdictional transmission services, is generally regulated by the states onshore and in state waters. Although its policies on gathering systems have varied in the past, the FERC has reclassified certain jurisdictional transmission facilities as non-jurisdictional gathering facilities, which has the tendency to increase our costs of getting natural gas to point of sale locations. State regulation of natural gas gathering facilities generally includes various safety, environmental, and in some circumstances, equitable take requirements. Natural gas gathering may receive greater regulatory scrutiny at both the state and federal levels in the future. We cannot predict what effect, if any, such changes may have on our operations,us, but the natural gas industry could be required to incur additional capital expenditures and increased costs depending on future legislative and regulatory changes, including changes in the interpretation of existing requirements or programs to implement those requirements. We do not believe we would be affected by any such regulatory changes in a materially different way than our similarly situated competitors.
Intrastate natural gas transportation service is also subject to regulation by state regulatory agencies. Like the regulation of interstate transportation rates, the regulation of intrastate transportation rates affects the marketing of natural gas we produce, as well as the revenues we receive for sales of our natural gas. The basis for intrastate regulation of natural gas transportation and the degree of regulatory oversight and scrutiny given to intrastate natural gas pipeline rates and services varies from state to state. Insofar as such regulation within a particular state will generally affect all intrastate natural gas shippers within the state on a comparable basis, we believe the regulation of intrastate natural gas transportation in states in which we operate and ship natural gas on an intrastate basis will not affect our operationsus in a way that materially differs from the effect on the operations of our similarly situated competitors.
Regulation of production
The production of crude oil and natural gas is subject to regulation under a wide range of federal, state and local statutes, rules, orders and regulations, which require, among other matters, permits for drilling operations, drilling bonds and reports concerning operations. All of the states in which we own and operate properties have regulations governing conservation, including provisions for the unitization or pooling of crude oil and natural gas properties, the establishment of maximum allowable rates of production from crude oil and natural gas wells, the regulation of well spacing, and the plugging and abandonment of wells.wells, as well as regulations that generally limit or prohibit the venting or flaring of natural gas. The effect of these regulations is to limit the amount of crude oil and natural gas we can produce from our wells and to limit the number of wells or the locations at which we can drill, although we can apply for exceptions to such regulations or to have reductions in well spacing. Moreover, each state generally imposes a production, severance or excise tax with respect to the production and sale of crude oil, natural gas and natural gas liquids within its jurisdiction.
The failure to comply with these rules and regulations can result in substantial penalties. Our similarly situated competitors in the crude oil and natural gas industry are generally subject to the same statutes, regulatory requirements and restrictions that affect our operations.restrictions.
Other federal laws and regulations affecting our industry
Dodd-Frank Wall Street Reform and Consumer Protection Act. In July 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) was enacted into law. This financial reform legislation includes provisionsThe Dodd-Frank Act established federal oversight and regulation of the over-the-counter derivatives market and entities, such as us, that require many derivative transactionsparticipate in that were then executed over-the-counter to be executed through an exchange and be centrally cleared.market. The Dodd-Frank Act requires the CFTC, the SEC, and other regulators to establish rules and regulations to implement the new legislation. TheAlthough the CFTC has issued final regulations to implement significant aspects of the legislation, including newothers remain to be finalized or implemented and it is not possible at this time to predict when this will be accomplished.
In November 2013, the CFTC proposed rules for the registration of swap dealers and major swap participants (and related definitions of those terms), definitions of the term “swap,” rules to establish the ability to rely on the commercial end-user exception from the central clearing and exchange trading requirements, requirements for reporting and record keeping, rules on customer protection in the context of cleared swaps, andestablishing position limits with respect to certain futures and option contracts and equivalent swaps, subject to exceptions for swaps and other transactions based on the price of certain reference contracts, some of whichbona fide hedging. As these new position limit rules are referenced in our swap contracts. The position limits regulation has been vacated by a Federal court; however, the CFTC has proposed replacement rules. Key regulations that have not yet been finalized include those establishing margin requirements for uncleared swaps and regulatory capital requirements for swap dealers.final, the impact of these provisions on us is uncertain at this time.
In December 2012,Pursuant to the CFTC published final rules regardingDodd-Frank Act, mandatory clearing of certain interest rate swaps and certain index credit default swaps and setting compliance dates for different categories of market participants. Mandatory clearing is now required for all such market participants, unless an exception is available, andavailable. The CFTC has designated certain interest rate swaps became subject to the trade execution requirements on February 15, 2014.and credit default swaps for mandatory clearing. The CFTC has not yet proposed any rules requiringrequired the clearing of any other classes of swaps, including physical commodity swaps, and the trade execution

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requirement does not apply to swaps that are not subject to a clearing mandate. Although we expect to qualify for the end-user exception from the clearing requirement for our swaps entered into to hedge our commercial risks, the application of the mandatory clearing requirements and revised capital requirements applicable to other market participants, such as swap dealers, along with changes to the markets for swaps as a result of the trade execution requirement, may change the cost and availability of the swaps we use for hedging.

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The CFTC’s swap regulations may require or cause our counterparties to collect margin from us, and if If any of our swaps do not qualify for the commercial end-user exception, or if the cost of entering into uncleared swaps becomes prohibitive, we may be required to clear such transactions or execute them on a derivatives contract market or swap execution facility. The ultimate effect of the proposed new rules and any additional regulations on our business is uncertain. Of particular concern is whether
In December 2015, the CFTC issued final rules establishing minimum margin requirements for uncleared swaps for swap dealers and major swap participants. The final rules do not impose margin requirements on commercial end users. Although we expect to qualify for the end-user exception from the margin requirements for swaps entered into to hedge our statuscommercial risks, the application of such requirements to other market participants, such as aswap dealers, may change the cost and availability of the swaps we use for hedging. If any of our swaps do not qualify for the commercial end-user will allowexception, the posting of collateral could reduce our derivative counterpartiesliquidity and cash available for capital expenditures and could reduce our ability to not require us to post margin in connection with ourmanage commodity price risk management activities. The remaining final rulesvolatility and regulations on major provisions of the legislation, such as new margin requirements, will be established through regulatory rule making.volatility in our cash flows.
In addition to the CFTC’s swap regulations, othercertain foreign jurisdictions including Canada, the European Union, Switzerland, Hong Kong, Singapore, Japan and Australia, are in the process of adopting or implementing laws and regulations relating to transactions in derivatives, including margin and central clearing requirements, which in each case may affect our counterparties and the derivatives markets generally. Other rules, including the restrictions on proprietary trading adopted under Section 619 of the Dodd-Frank Act, also known as the Volcker Rule, may alter the business practices of some of our counterparties and in some cases may cause them to stop transacting in or making markets in derivatives. Moreover, federal banking regulators are reevaluating the authorization under which banking entities subject to their authority may engage in physical commodities transactions.
Although we cannot predict the ultimate outcome of these rulemakings, new rules and regulations, in this area, to the extent applicable to us or our derivative counterparties, may result in increased costs and cash collateral requirements for the types of derivative instruments we use to manage our financial and commercial risks related to fluctuations in commodity prices. Additional effects of the new regulations, including increased regulatory reporting and recordkeeping costs, increased regulatory capital requirements for our counterparties, and market dislocations or disruptions, among other consequences, could have an adverse effect on our ability to hedge risks associated with our business.
Additionally, the SEC had planned to adoptadopted rules as required under the Dodd-Frank Act requirement thatrequiring registrants to disclose certain payments made to the U.S. Federal government and foreign governments in connection with the commercial development of crude oil, natural gas or minerals. The disclosure requirements were challenged by certain business groups and were subsequently vacated by a Federal court in July 2013. TheIn December 2015, the SEC did not appeal the ruling and plans to issueissued a revised proposal for public comment. As the timingproposed rules are not yet final, the impact of whichthe rules on our business is uncertain.
The SEC has adopted the Dodd-Frank Act requirement that registrants disclose the use of conflict minerals in their products, and whether any of those minerals originated in certain conflict-ridden regions of Africa and financed or benefited armed groups. Certain business groups challenged the disclosure requirements; however, the requirements were upheld by a Federal court in a July 2013 ruling. The ruling has been appealed by the plaintiffs involved in the matter. We monitor our operations to determine if any disclosure or reporting obligations arise under the conflict mineral rules.uncertain at this time.
Energy Policy Act of 2005. The Energy Policy Act of 2005 (“EPAct 2005”) included a comprehensive compilation of tax incentives, authorized appropriations for grants and guaranteed loans, and made significant changes to the statutory framework affecting the energy industry. Among other matters, EPAct 2005 amended the NGA to add an anti-market manipulation provision making it unlawful for any entity, including otherwise non-jurisdictional producers such as us, to use any deceptive or manipulative device or contrivance in connection with the purchase or sale of natural gas or the purchase or sale of transportation services subject to regulation by the FERC, in contravention of rules prescribed by the FERC. In January 2006, the FERC issued rules implementing the anti-market manipulation provision of EPAct 2005. These anti-market manipulation rules apply to activities of natural gas pipelines and storage companies that provide interstate services, as well as otherwise non-jurisdictional entities to the extent the activities are conducted “in connection with” natural gas sales, purchases or transportation subject to FERC jurisdiction, which now includes the annual reporting requirements as described further below.
The EPAct 2005 also provided the FERC with additional civil penalty authority. The EPAct 2005 provides the FERC with the power to assess civil penalties of up to $1,000,000 per day per violation for violations of the NGA and NGPA. Under EPAct 2005,NGPA and the FERC also has authority to order disgorgement of profits associated with any violation. The anti-market manipulation rules and enhanced civil penalty authority reflect an expansion of the FERC’s enforcement authority.
FERC Market Transparency and Reporting Rules. The FERC requires wholesale buyers and sellers of more than 2.2 million MMBtus of physical natural gas in the previous calendar year, including interstate and intrastate natural gas pipelines, natural gas gatherers, natural gas processors, natural gas marketers, and natural gas producers, to report, on May 1 of each year, aggregate volumes of natural gas purchased or sold at wholesale in the prior calendar year to the extent such transactions utilize, contribute to, or may contribute to the formation of price indices. The FERC also requires market participants to indicate whether they report prices to any index publishers and, if so, whether their reporting complies with the FERC’s policy statement on price reporting. Failure to comply with these reporting requirements could subject us to enhanced civil penalty liability provided under the EPAct 2005.

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FTC and CFTC Market Manipulation Rules. Wholesale sales of petroleum are subject to provisions of the Energy Independence and Security Act of 2007 (“EISA”) and regulations by the FTC. Under the EISA, the FTC issued its Petroleum Market Manipulation Rule (the “Rule”), which became effective in November 4, 2009, and prohibits fraudulent or deceptive conduct (including false or misleading statements of material fact) in connection with wholesale purchases or sales of crude oil or refined petroleum products. The Rule also bans intentional failures to state a material fact when the omission makes a statement misleading and distorts, or is likely to distort, market conditions for any product covered by the Rule. The FTC holds substantial enforcement authority underUnder the EISA, includingthe FTC has authority to request that a court to impose fines of up to $1,000,000 per day per violation. Under the Commodity Exchange Act, theThe CFTC is directed to prevent price manipulations for the commodity and futures markets, including the energy futures markets. Pursuant to the Dodd-Frank Act, the CFTC has also adopted anti-market manipulation regulations that prohibit, among other things, fraud and price manipulation in the commodity and futures markets. The CFTC also has statutory authority tomay assess fines of up to the greater of $1,000,000 or triple the monetary gain for violations of its anti-market manipulation regulations. Knowing or willful violations of the Commodity Exchange Act may also lead to a felony conviction.
Additional proposals and proceedings that may affect the crude oil and natural gas industry are pending before the U.S. Congress, the FERC and the courts. We cannot predict the ultimate impact of these or the above regulatory changes tolaws and regulations may have on our crude oil and natural gas operations. We do not believe we will be affected by any such action in a materially different way than our similarly situated competitors.
Environmental, health and safety regulation
General. Our operationsWe are subject to stringent and complex federal, state, and local laws, rules and regulations governing environmental protection, health and safety,compliance, including the discharge of materials into the environment.environment, and worker health and safety. These laws, rules and regulations may, among other things:
require the acquisition of various permits beforeto conduct exploration, drilling commences;and production operations;
restrict the types, quantities and concentration of various substances that can be released into the environment in connection with crude oil and natural gas drilling, production and transportation activities;
limit or prohibit drilling activities on certain lands lying within wilderness, wetlands and other protected areas including areas containing endangered species of plants and animals; and
require remedial measures to mitigate pollution from former and ongoing operations, such as requirements to close pits and plug abandoned wells.wells; and
impose substantial liabilities for pollution resulting from drilling and production operations.
These laws, rules and regulations may also restrict the rate of crude oil and natural gas production below a rate otherwise possible. The regulatory burden on the crude oil and natural gas industry increases the cost of doing business and affects profitability. Additionally, the U.S. Congress and federal and state agencies frequently revise environmental, health and safety laws, rules and regulations, and any changes that result in more stringent and costly waste handling, disposal, cleanup and remediation requirements for the crude oil and natural gas industry could have a significant impact on our operating costs.
Environmental protection and natural gas flaring initiatives. Continental is committed to conducting its operations in a manner that protects the health, safety and welfare of the public, its employees and the environment. We strive to operate in accordance with all applicable regulatory and legal requirements and have focused on continuously improving our health, safety, security and environmental (“HSS&E”HSE”) performance.performance; however, at times circumstances may arise that adversely affect our compliance with applicable HSE requirements. We believe excellent HSS&E performance is critical to the long-term success of our business,have established internal policies and is a key component in maximizing return to shareholders. We also believe achieving this excellence requires the commitment and involvement ofprocedures regarding HSE matters for all employees, in the Company, and we expect the same level of commitment from our contractors, and vendors. Our commitment to HSS&E excellence is a paramount objective.
In connection with our HSS&EHSE initiatives, we actively work to identify and manage theour environmental and safety risks and the impact of our operations. Further, we set corporate objectives aimed at producing continuous improvement ofoperations and improve our HSS&E efforts and we seek to provide the leadership and resources to enable our workforce to achieve our objectives.HSE efforts. We routinely monitor our HSS&EHSE performance to assess our conformitycompliance with environmental protection initiatives.
We take a proactive and disciplined approach to emergency preparednesssafety initiatives and business continuity planning to address the health, safety, security, and environmental risks inherent to our industry. We continually train our workforce and conduct drills to improve awareness and readiness to mitigate such risks. Further, emergency response plans are maintained that establish procedures to be utilized during any type of emergency affecting our personnel, facilities or the environment.peer benchmarking with trade associations.
One current focus of our HSS&EHSE initiatives is the reduction of air emissions produced from our operations, particularly with respect to the flaring of natural gas from our operated well sites in the Bakken field of North Dakota. North Dakota statutes permit flaring of natural gas from a well that has not been connected to a gas gathering line for a period of one year from the date of a well's first production. After one year, a producer is required to cap the well, connect it to a gas gathering line, find acceptable alternative uses for a percentage of the flared gas, or apply to the NDIC for a written exemption for any future flaring; otherwise, the producer is required to pay royalties and production taxes based on the volume and value of the gas flared from the unconnected well. While the NDIC ultimately determines the volume and value of any such gas flared and the applicable royalties and production taxes, the NDIC has thus far generally accepted our most active area. The rapid growthmethods for calculating these figures. Furthermore, the NDIC has generally accepted applications we have submitted to secure exemptions from the post-year flaring restrictions. Finally, NDIC rules for new drilling permit applications also require the submission of crude oilgas capture plans that address measures taken by operators to capture and not flare produced gas, regardless of whether it has been or will be connected within the first year of production. Thus far, the NDIC has generally accepted our gas capture plans submitted with applications for drilling permits. In September 2015, the NDIC extended the deadline to comply with the requirement to capture 85% of the natural gas produced from a well by one year, with a new compliance deadline of November 1, 2016.

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Compliance with the NDIC's flaring requirements or the imposition of any additional limitations on flaring could result in increased costs and have an adverse effect on our operations.
For the year ended December 31, 2015, we delivered approximately 87% of our operated natural gas production in North Dakota Bakken to market, flaring approximately 13% compared to 13% in recent years, coupled2014, 11% in 2013 and 15% in 2012. Flaring from our operated well sites in the North Dakota Bakken is less than our industry peers operating in the play. According to data published by the NDIC, our industry as a whole flared approximately 18% of produced natural gas volumes in the state during 2015. We are a participant in the NDIC’s Flaring Reduction Task Force and are engaged in working with a lackother task force members and the NDIC to develop action plans for mitigating natural gas flaring in the state. Flared natural gas volumes from our operated SCOOP, Northwest Cana and STACK properties in Oklahoma are negligible given the existence of established natural gas

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transportation infrastructure in the state, has led to an industry-wide increase in flaring of natural gas produced in association with crude oil production. We recognize theinfrastructure.
There are environmental and financial risks associated with natural gas flaring and we attempt to manage these risks on an ongoing basis. We set internal flaring reduction targets and toTo date, we have taken numerous actions to reduce flaring from our operated well sites. We make efforts to coordinate our well completion operations to coincide with well connections to gathering systems in order to minimize flaring, but may not always be successful in these efforts. Our ultimate goal is to reduce natural gas flaring from our operated well sites to as close to zero percent flaringmuch as possible. Inis practicable. For example, in operating areas such as the Buffalo Red River units in South Dakota, the quality of the natural gas is not adequate to meet requirements for sale, so we employ processes to efficiently combust the gas andin an effort to minimize impacts to the environment.
In 2013, we continued to make notable progress in adhering to our Our levels of flaring reduction initiatives. The percentage of our operated natural gas production flared in North Dakota Bakken, our most active area, was less than 11% in 2013, compared to 15% in 2012 and 19% in 2011. We believe this reduction is a notable accomplishment given the significant increase in our natural gas production in the Bakken field, including areas with less developed infrastructure. Flaring from our operated well sites in North Dakota Bakken is significantly less than our industry peers operating in the play. According to data published by the North Dakota Industrial Commission ("NDIC"), our industry as a whole was flaring approximately 30% of produced natural gas volumes in the state as of late 2013. Since we are one of the largest producers in the North Dakota Bakken field, we believe the percentage of natural gas flared by the industry as a whole would be higher than 30% if Continental’s results were excluded from the NDIC’s data. Continental is a participant in the NDIC’s Flaring Reduction Task Force and is actively engaged in working with other task force members and the NDIC to develop action plans for mitigating natural gas flaring in the state.
We are experiencing similar or better flaring results in our other key operating areas outside of North Dakota. In Montana Bakken, we flared approximately 9% of the natural gas produced from our operated well sites in 2013. Additionally, flared natural gas volumes from our operated SCOOP and Northwest Cana properties in Oklahoma are negligible given the existence of established natural gas transportation infrastructure in that state.
Through our HSS&E initiatives, we will continue to work toward maintaining an industry-leading position with respect to flaring reduction efforts in North Dakota and our other key operating areas. We expect to further reduce flared natural gas volumes as we continue to build out transportation infrastructure and transition to a greater use of pad drilling in 2014 and beyond. Our flaring reduction progress is and will be dependent upon external factors such as investment from third parties in the development of gas gathering systems, state regulations, and the granting of reasonable right-of-way access by land owners, among other factors.owners.
We have incurred in the past, and expect to incur in the future, capital and other expenditures related to environmental compliance. Such expenditures are included within our overall capital and operating budgets and are not separately itemized. Although we believe our continued compliance with existing requirements will not have a material adverse impact on our financial condition and results of operations, we cannot assure you that the passage of more stringent laws or regulations in the future will not materially impact our financial position, or results of operations.operations or cash flows.
Environmental, health and safety laws, rules and regulations. Some of the existing environmental and worker health and safety laws, rules and regulations to which we are subject to include, among others: (i) regulations by the Environmental Protection Agency (“EPA”) and various state agencies regarding approved methods of disposal for certain hazardous and nonhazardous wastes; (ii) the Comprehensive Environmental Response, Compensation, and Liability Act and analogous state laws that may require the removal of previously disposed wastes (including wastes disposed of or released by prior owners or operators), the cleanup of property contamination (including groundwater contamination), and remedial plugging operationslease restoration activities to prevent future contamination;contamination from prior operations; (iii) federal Department of Transportation safety laws and comparable state and local requirements; (iv) the Clean Air Act and comparable state and local requirements, which establish pollution control requirements with respect to air emissions from our operations; (v) the Oil Pollution Act of 1990, which contains numerous requirements relating to the prevention of and response to oil spills into waters of the United States; (vi) the Federal Water Pollution Control Act, or the Clean Water Act, and analogous state laws which impose restrictions and strict controls with respect to the discharge of pollutants, including crude oil and other substances generated by our operations, into waters of the United States or state waters; (vii) the Resource Conservation and Recovery Act, which is thea principal federal statute governing the treatment, storage and disposal of solid and hazardous wastes, and comparable state statutes; (viii) the Safe Drinking Water Act and analogous state laws which impose requirements relating to our underground injection activities; (ix) the National Environmental Policy Act and comparable state statutes, which require government agencies, including the Department of Interior, to evaluate major agency actions that have the potential to significantly impact the environment; (x) the federal Occupational SafetyEndangered Species Act and Healthcomparable state statutes, which afford protections to certain plant and animal species; (xi) the Migratory Bird Treaty Act, ("OSHA")which imposes certain restrictions for the protection of migratory birds; (xii) the Bald and Golden Eagle Protection Act, which imposes certain restrictions for the protection of bald and golden eagles; (xiii) the Emergency Planning and Community Right to Know Act and comparable state statutes, which require that we organize and/or disclose information about hazardous materials stored, used or produced in our operations, and (xi)(xiv) state regulations and statutes governing the handling, treatment, storage and disposal of naturally occurring radioactive material. Any failure to comply with these laws, rules and regulations may result in the assessment of administrative, civil and criminal penalties, the imposition of corrective or remedial obligations, the issuance of orders enjoining performance of some or all of our operations, and potential litigation.
ClimateAir emissions and climate change. Federal, state and local laws and regulations are increasingly being enacted to address concerns about the effects the emission of carbon dioxide and other identified “greenhouse gases” may have on the environment and climate

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worldwide. These effects are widely worldwide, generally referred to as “climate change.” Since its December 2009 endangerment finding regarding the emission of carbon dioxide, methane and other greenhouse gases,For example, the EPA has begun regulatingadopted regulations under existing provisions of the federal Clean Air Act ("CAA") establishing, among other things, Prevention of Significant Deterioration (“PSD”) and construction and Title V operating permit reviews for certain large stationary sources. Facilities required to obtain PSD permits for greenhouse gas emissions are also required to meet “best available control technology” standards established on a case-by-

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case basis. We currently do not have any facilities that are required to adhere to the PSD or Title V permit requirements; however, attempts by the EPA to aggregate multiple oil and gas production facilities, each of which is currently and has long been regarded as an individual stationary source, for permitting purposes could result in the aggregate emissions from these independent facilities triggering Title V and/or PSD requirements. EPA rulemakings related to greenhouse gas emissions could adversely affect our operations and restrict or delay our ability to obtain air permits for new or modified sources.
In addition, the EPA has adopted rules requiring the monitoring and reporting of greenhouse gas emissions from specified onshore and offshore oil and gas production sources in the United States on an annual basis, which include certain of our operations. In August 2015, the EPA proposed new regulations setting methane emission standards for new and modified oil and gas production and natural gas processing and transmission facilities as part of the Obama Administration’s efforts to reduce methane emissions from the oil and gas sector by up to 45% from 2012 levels by 2025 even though there is consensus that oil and gas producers’ compliance with EPA's New Source Performance Standard Subpart OOOO, which was promulgated in 2012, has already achieved the methane reductions which are now being targeted by the recently proposed regulations. The proposed regulations are expected to be finalized in 2016. On January 22, 2016, the Bureau of Land Management issued a pre-publication version of a proposed venting and flaring rule, which is expected to be finalized in 2016 and, like the forthcoming EPA regulations, will address methane emissions from crude oil and natural gas sources. To the extent the new regulations impose reporting obligations on, or limit emissions of greenhouse gases from, our equipment and operations they could require us to incur costs to reduce emissions associated with our operations, the impact of which, though uncertain at this time as the regulations are not yet final, is not expected to be material and will not affect us in a way that materially differs from our similarly situated competitors.
In December 2015, a global climate agreement was reached in Paris at the 21st Conference of Parties organized by the United Nations under the Framework Convention on Climate Change. The agreement, which goes into effect in 2020, resulted in nearly 200 countries, including the United States, committing to work towards limiting global warming and agreeing to a monitoring and review process of greenhouse gas emissions. The agreement includes binding and non-binding elements and did not require ratification by the U.S. Congress. Nonetheless, the agreement may result in increased political pressure on the United States to ensure continued compliance with enforcement measures under the Clean Air Act and may spur further initiatives aimed at reducing greenhouse gas emissions in the future.
While the U.S. Congress has from time to time considered legislation to reduce emissions of greenhouse gases, there has not been significant activity in the form of adopted legislation to reduce greenhouse gas emissions at the federal level in recent years. In the absence of such federal legislation, a number of state and regional efforts have emerged that are aimed at tracking and reducing greenhouse gas emissions by means of cap and trade programs that typically require major sources of greenhouse gas emissions, under the federal Clean Air Act. Among severalsuch as electric power plants, to acquire and surrender emission allowances in return for emitting those greenhouse gases. Although it is not possible at this time to predict how such legislation or new regulations requiring reporting or permitting foradopted to address greenhouse gas sources, the EPA finalized its “tailoring rule” in May 2010 that identifies which stationary sourcesemissions would impact our business, any future laws and regulations imposing reporting obligations on, or limiting emissions of greenhouse gases are requiredfrom, our equipment and operations could require us to obtain permitsincur costs to construct, modify or operatereduce emissions of greenhouse gases associated with our operations. In addition, substantial limitations on account of, and to implement the best available control technology for, their greenhouse gases. In November 2010, the EPA also finalized its greenhouse gas reporting requirements for certain oil and gas production facilities that emit 25,000 metric tons or more of carbon dioxide equivalent per year. The rule requires annual reporting to the EPA of greenhouse gas emissions bycould adversely affect the demand for the crude oil and natural gas we produce. Finally, it should be noted that some scientists have concluded that increasing concentrations of greenhouse gases in the Earth’s atmosphere may produce climate changes that have significant physical effects, such regulated facilities.as increased frequency and severity of storms, floods and other climatic events. If any such effects from such causes were to occur, they could have an adverse effect on our exploration and production operations.
In April 2012,With respect to air quality regulation more generally, the EPA issued final rules thathas also established new air emission controls for crude oil and natural gas production and natural gas processing operations. These rules were published inoperations under the Federal Register on August 16, 2012. The EPA’s rule package includesCAA's New Source Performance Standards and National Standards for Emission of Hazardous Air Pollutants programs. With regard to address emissionsproduction activities, the rules require, among other things, the reduction of sulfur dioxide and volatile organic compoundscompound (“VOCs”VOC”) emissions from three subcategories of fractured and refractured gas wells for which well completion operations are conducted: wildcat (exploratory) and delineation gas wells; low reservoir pressure non-wildcat and non-delineation gas wells; and all “other” fractured and refractured gas wells. All three subcategories of wells must route flowback emissions to a separate set of emission standards to address hazardous air pollutants frequently associated with crude oilgathering line or be captured and natural gas production and processing activities. The final rules requirecombusted using a combustion device such as a flare. However, the “other” wells must use of reduced emission completions or “green completions” on all hydraulically-fractured wells completed or refractured after January 1, 2015 in order to achieve a 95% reduction in the emission of VOCs.completions.” The rules also establishestablished specific new requirements regarding emissions from compressors, controllers, dehydrators, storage tanks and other production equipment. TheseThe rules may require modificationsare designed to our operations, including the installation of new equipment to control emissions from our wells by January 1, 2015. Compliance with such rules could result in significant costs, including increased capital expenditures and operating costs, and could adversely impact our business.
Moreover, in recent years the U.S. Congress has considered establishing a cap-and-trade program to reduce U.S.limit emissions of greenhouse gases, including carbonVOCs, sulfur dioxide, and methane. Under past proposals, the EPA would issue or sellhazardous air pollutants from a capped and steadily declining numbervariety of tradable emissions allowances to certain major sources of greenhousewithin natural gas emissions so that such sources could continue to emit greenhouse gases into the atmosphere. These allowances would be expected to escalate significantly in cost over time. The net effect of such legislation, if adopted, would be to impose increasing costs on the combustion of carbon-based fuels such as crude oil, refined petroleum products, and natural gas. In addition, while the prospect for such cap-and-trade legislation by the U.S. Congress remains uncertain, several states have adopted, or are in the process of adopting, similar cap-and-trade programs.
As a crudeprocessing plants, oil and natural gas company, the debate on climate change is relevant to our operations because the equipment we use to explore for, develop and produce crude oilproduction facilities, and natural gas emits greenhouse gases. Additionally, the combustion of carbon-based fuels, suchtransmission compressor stations. We have modified our operations and well equipment as the crude oil and natural gas we sell, emits carbon dioxide and other greenhouse gases. Thus, any current or future federal, state or local climate change initiatives could adversely affect demand for the crude oil and natural gas we produce by stimulating demand for alternative forms of energy that do not rely on the combustion of fossil fuels, and therefore could have a material adverse effect on our business. Although ourneeded to comply with these rules. Ongoing compliance with any greenhouse gas regulations maythe rules is not expected to affect us in a way that materially differs from our similarly situated competitors. In addition, in October 2015 the EPA revised the National Ambient Air Quality Standard (“NAAQS”) for ozone from 75 to 70 parts per billion for both the 8-hour primary and secondary standards. State implementation of the revised NAAQS could result in stricter permitting requirements, delay or prohibit our ability to obtain such permits, and result in increased compliance and operatingexpenditures for pollution control equipment, the costs we do not expect the compliance costs for currently applicable regulations toof which could be material. Moreover, while it is not possible at this time to estimate the compliance costs or operational impacts for any new legislative or regulatory developments in this area, we do not anticipate being impacted to any greater degree than other similarly situated competitors.significant.

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Hydraulic fracturing. Hydraulic fracturing involves the injection of water, sand and additives under pressure into rock formations to stimulate crude oil and natural gas production. Some activists have attempted to linkIn recent years there has been increased public concern regarding an alleged potential for hydraulic fracturing to various environmental problems, including adverse effects toadversely affect drinking water supplies and migration of methane and other hydrocarbons.to induce seismic events. As a result, several federal and state agencies are studying the environmental risks with respect to hydraulic fracturing, or evaluating whetherand proposals have been made to restrict its use. From timeenact separate federal, state and local legislation that would increase the regulatory burden imposed on hydraulic fracturing.
Also at the federal level, the EPA has asserted federal regulatory authority pursuant to time, legislation has been introduced in the U.S. Congress to amend the federal Safe Drinking Water Act to eliminate an existing exemption for(“SDWA”) over certain hydraulic fracturing activities frominvolving the definitionuse of “underground injection,” thereby requiringdiesel fuels and published permitting guidance in February 2014 related to such activities. In May 2014, the crude oil and natural gas industryEPA issued an Advance Notice of Proposed Rulemaking to obtain permits for hydraulic fracturing and to require disclosure of the additives used in the process. If adopted, such legislation could establish an additional level of regulation and permitting at the federal level.
Scrutiny of hydraulic fracturing activities continues in other ways. The White House Councilcollect data on Environmental Quality is coordinating an administration-wide review of hydraulic fracturing practices, and a number of federal agencies are analyzing environmental issues associated with hydraulic fracturing. The EPA has commenced a multi-year study of the potential environmental impacts of hydraulic fracturing, the draft results of which are anticipated to be available in 2014. Further, on May 11, 2012, the Bureau of Land Management (“BLM”) issued a proposed rule that would require public disclosure of chemicals used in hydraulic fracturing operations and imposeunder Section 8 of the Toxic Substances Control Act. To date, no other operational requirements for allaction has been taken. Further, in April 2015 the EPA issued proposed regulations under the Clean Water Act governing discharges to publicly owned treatment works of waste water from hydraulic fracturing operationsand certain other natural gas operations. In 2015 the EPA completed a study of the potential impacts of hydraulic fracturing activities on water resources and published a draft assessment in June 2015 for peer review and public comment. In its assessment, the EPA indicated it did not find evidence that hydraulic fracturing mechanisms caused widespread, systemic impacts on drinking water resources in the United States. Nonetheless, the results of the study or similar governmental reviews could spur initiatives to regulate hydraulic fracturing under the SDWA or otherwise, and there has been recent speculation the EPA may conduct a second similar study. Finally, the U.S. Department of Interior issued final rules in March 2015 related to the regulation of hydraulic fracturing activities on federal lands, including Native American trust lands. BLM publishedrequirements for chemical disclosure, well bore integrity and handling of flowback water. The U.S. District Court of Wyoming has temporarily stayed implementation of this rule and a supplemental notice of proposed rulemaking on May 24, 2013, which replacedfinal decision remains pending.
At the proposed rulemaking issued by the agency in May 2012. Additionally, on February 11, 2014 the EPA issued guidance governing the use of diesel fuel in hydraulic fracturing fluids. The guidance

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identifies five different variations of diesel and outlines new permitting guidelines for their use, along with technical recommendations for meeting the standards. In addition to these federal initiatives,state level, several state and local governments,states, including states in which we operate, have movedadopted or are considering adopting legal requirements imposing more stringent permitting, disclosure and well construction requirements on hydraulic fracturing activities. Local governments also may seek to require disclosureadopt ordinances within their jurisdictions regulating the time, place and manner of drilling activities in general or hydraulic fracturing fluid componentsactivities in particular or otherwise to regulate their use more closely.prohibit the performance of well drilling in general or hydraulic fracturing in particular. In certain areas of the United States, new drilling permits for hydraulic fracturing have been put on hold pending development of additional standards.
We voluntarily participate in FracFocus, a national publicly accessible Internet-based registry developed by the Ground Water Protection Council and the Interstate Oil and Gas Compact Commission. This registry, located at www.fracfocus.org, provides our industry with an avenue to voluntarily disclose additives used in the hydraulic fracturing process. We currently disclose theThe additives used in the hydraulic fracturing process on all wells we operate.operate are disclosed on that website.
The adoption of any future federal, state or local laws, rules or implementing regulations imposing permitting or reporting obligations on, or otherwise limiting, the hydraulic fracturing processprocesses in areas in which we operate could make it more difficult and more expensive to complete crude oil and natural gas wells in low-permeability formations, increase our costs of compliance and doing business, and delay, prevent or prohibit the development of natural resources from unconventional formations. Compliance, or the consequences of our failure to comply, could have a material adverse effect on our financial condition and results of operations. At this time it is not possible to estimate the potential impact on our business if such federal or state legislation is enacted into law.
Waste water disposal. Underground injection wells are a predominant method for disposing of waste water from oil and gas activities. In response to recent seismic events near underground injection wells used for the disposal of oil and gas-related waste waters, federal and some state agencies are investigating whether such wells have caused increased seismic activity. Some states, including states in which we operate, have delayed permit approvals, mandated a reduction in injection volumes, or have shut down or imposed moratoria on the use of injection wells. Regulators in some states, including states in which we operate, are considering additional requirements related to seismic safety. For example, the Oklahoma Corporation Commission (“OCC”) has adopted rules for operators of saltwater disposal wells in certain seismically-active areas in the Arbuckle formation of Oklahoma. These rules require, among other things, that disposal well operators conduct mechanical integrity testing or make certain demonstrations of such wells’ respective depths that, depending on the depth, could require plugging the well and/or the reduction of volumes disposed in such wells. Oklahoma has adopted a “traffic light” system, wherein the OCC reviews new or existing disposal wells for proximity to faults, seismicity in the area and other factors in determining whether such wells should be permitted, permitted only with special restrictions, or not permitted. At the federal level, the EPA's current regulatory requirements for such wells do not require the consideration of seismic impacts when issuing permits. We cannot predict the EPA's future actions in this regard. The introduction of new environmental initiatives and regulations related to the disposal of wastes associated with the exploration, development or production of hydrocarbons, could limit or prohibit our ability to utilize underground injection wells. A lack of waste water disposal sites could cause us to delay, curtail or discontinue our exploration and development plans. Additionally, increased costs associated with the transportation and disposal of produced water, including the cost of complying with regulations concerning produced water disposal, may reduce

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our profitability. These costs are commonly incurred by all oil and gas producers and we do not believe the costs associated with the disposal of produced water will have a material adverse effect on our operations to any greater degree than other similarly situated competitors. In 2015, we began operation of water recycling facilities in the SCOOP area that economically reuse stimulation water for both operational efficiencies and environmental benefits.
Employees
As of December 31, 2013,2015, we employed 9291,143 people. Our future success will depend partially on our ability to attract, retain and motivate qualified personnel. We are not a party to any collective bargaining agreements and have not experienced any strikes or work stoppages. We consider our relations with our employees to be satisfactory. We utilize the services of independent contractors to perform various field and other services.
Company Contact Information
Our corporate internet website is www.clr.com. Through the investor relations section of our website, we make available free of charge our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and any amendments to those reports as soon as reasonably practicable after the report is filed with or furnished to the SEC. For a current version of various corporate governance documents, including our Code of Business Conduct and Ethics and the charters for various committees of our Board of Directors, please see our website. We intend to disclose amendments to, or waivers from, our Code of Business Conduct and Ethics by posting to our website. Information contained on our website is not incorporated by reference into this report and you should not consider information contained on our website as part of this report.
We intend to use our website as a means of disclosing material information and for complying with our disclosure obligations under SEC Regulation FD. Such disclosures will be included on our website in the “For Investors” section. Accordingly, investors should monitor that portion of our website in addition to following our press releases, SEC filings and public conference calls and webcasts.
We file periodic reports and proxy statements with the SEC. The public may read and copy any materials we file with the SEC at the SEC’s Public Reference Room at 100 F Street N.E., Washington, D.C. 20549. The public may obtain information about the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. We file our reports with the SEC electronically. The SEC maintains an internet website that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The address of the SEC’s website is www.sec.gov.
Our principal executive offices are located at 20 N. Broadway, Oklahoma City, Oklahoma 73102, and our telephone number at that address is (405) 234-9000.

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Item 1A.Risk Factors
You should carefully consider each of the risks described below, together with all other information contained in this report before deciding to invest in shares ofconnection with an investment in our common stock.securities. If any of the following risks develop into actual events, our business, financial condition or results of operations could be materially adversely affected, the trading price of your sharesour securities could decline and you may lose all or part of your investment.
We are subject to certain risks and hazards due to the natureSubstantial declines in commodity prices or extended periods of the business activities we conduct. The risks discussed below, any of which could materially andhistorically low commodity prices adversely affect our business, financial condition, cash flows, and results of operations are not the only risks we face. We may experience additional risks and uncertainties not currently known to us or, as a result of developments occurring in the future, conditions that we currently deem to be immaterial may also materially and adversely affect our business, financial condition, cash flows and results of operations.

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A substantial or extended decline in crude oil and natural gas prices may adversely affect our business, financial condition or results of operations and our ability to meet our capital expenditure needs and financial commitments.
The priceprices we receive for sales of our crude oil and natural gas production heavily influencesinfluence our revenue, profitability, access to capital, capital budget and future rate of growth. Crude oil and natural gas are commodities and therefore, their prices are subject to wide fluctuations in response to relatively minor changes in supply and demand.demand, as evidenced by the significant decrease in crude oil and natural gas prices in 2014 and 2015, which has continued into 2016. Historically, the markets for crude oil and natural gas have been volatile. These markets willvolatile and unpredictable. For example, the NYMEX West Texas Intermediate crude oil and Henry Hub natural gas spot prices ranged widely from approximately $35 to $61 per barrel and $1.63 to $3.32 per MMBtu, respectively, during 2015. Commodity prices are likely continue to beremain volatile and unpredictable in the future. 2016.
Our crude oil sales for future periods are currently unhedged and directly exposed to continued volatility in crude oil market prices, whether favorable or unfavorable. Additionally, a portion of our natural gas sales for future periods are unhedged and directly exposed to continued volatility in natural gas market prices, whether favorable or unfavorable.
The prices we receive for our production, and the levelssales of our production depend on numerous factors beyond our control. These factors include, but are not limited to, the following:
worldwide, domestic and regional economic conditions impacting the global supply of, and demand for, crude oil and natural gas;
the actions of the Organization of Petroleum Exporting Countries;Countries and other producing nations;
the level of national and global crude oil and natural gas exploration and production activities;
the level of national and global crude oil and natural gas inventories, which may be impacted by levels of economic sanctions applied to certain producing nations;
the level and effect of trading in commodity futures markets;
the price and quantity of imports of foreign crude oil;
the price and quantity of exports of crude oil or liquefied natural gas from the United States;
military and natural gas;
political conditions in, or affecting other, crude oil-producing and natural gas-producing countries;
the nature and extent of domestic and foreign governmental regulations and taxation, including environmental regulations;
the level of national and global crude oil and natural gas exploration and production;
the level of national and global crude oil and natural gas inventories;
localized supply and demand fundamentals;
the availability, proximity and capacity of transportation, processing, storage and refining facilities;
changes in supply, demand, and refineryrefining and processing capacity for various grades of crude oil and natural gas;
the ability of national and global refineries in the United States to accommodate increasing domestic supplies of light sweet crude oil;
the levelcost of transporting, processing, and effect of trading in commodity futures markets;marketing crude oil and natural gas;
adverse weather conditions;conditions and natural disasters;
technological advances affecting energy consumption;
the effect of worldwide energy conservation and environmental protection efforts; and
the price and availability of alternative fuels or other energy sources.
Lower crude oil and natural gasSustained material declines in commodity prices could reduce our cash flows available for capital expenditures, repayment of indebtedness and other corporate purposes; may limit our ability to borrow money or raise additional capital; and may reduce our proved reserves and the amount of crude oil and natural gas we can economically produce.
Substantial, extended decreasesCrude oil prices remained significantly depressed in 2015 and face continued downward pressure, with crude oil prices dropping below $27 per barrel in early 2016. Natural gas prices faced similar downward pressure in 2015, dropping below

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$1.70 per MMBtu in December 2015. We have established our 2016 capital program to be reflective of the current commodity price environment which will result in a reduction in our operated rig count and deferral of certain drilling projects and well completion activities in 2016. These actions could have an adverse effect on our business, financial condition, results of operations and cash flows.
In addition to reducing our revenue, cash flows and earnings, depressed prices for crude oil and natural gas may adversely affect us in a variety of ways. If commodity prices would render uneconomic a significant portiondo not improve or further decrease, some of our exploration and development projects could become uneconomic, and exploitation projects. Thiswe may result inalso have to make significant downward adjustments to our estimated proved reserves and our estimates of the present value of those reserves. If these price effects occur, or if our estimates of production or economic factors change, accounting rules may require us to write down the carrying value of our crude oil and natural gas properties. Lower commodity prices may also reduce our access to capital and lead to a downgrade or other negative rating action with respect to our credit rating, as was the case in February 2016 when our corporate credit rating was downgraded by Standard & Poor's Ratings Services ("S&P") and Moody's Investor Services, Inc. ("Moody's") in response to weakened oil and gas industry conditions and resulting revisions made to rating agency commodity price assumptions. These downgrades negatively impact our cost of capital, increase the borrowing costs under our revolving credit facility and $500 million term loan due in November 2018 (“three-year term loan”), and may limit our ability to access capital markets and execute aspects of our business plans. As a result, a substantialan extended continuation of the current commodity price environment, or extended declinefurther declines in crude oil or natural gascommodity prices, wouldwill materially and adversely affect our future business, financial condition, results of operations, cash flows, liquidity orand ability to finance planned capital expenditures.expenditures and commitments.
A substantial portion of our producing properties areis located in the North region,limited geographic areas, making us vulnerable to risks associated with having operationsgeographically concentrated in this geographic area.operations.
Our operations areA substantial portion of our producing properties is geographically concentrated in the Bakken field of North region,Dakota and Montana, with that regionarea comprising approximately 77%62% of our crude oil and natural gas production and approximately 86%69% of our crude oil and natural gas revenues for the year ended December 31, 2013. Additionally, as of December 31, 2013 approximately 76%2015. Approximately 54% of our estimated proved reserves were located in the North region.Bakken as of December 31, 2015. Additionally, in recent years we have significantly expanded our operations in Oklahoma with our discovery of the SCOOP play and our increased activity in the Northwest Cana and STACK plays. Our properties in Oklahoma comprised approximately 32% of our crude oil and natural gas production and approximately 23% of our crude oil and natural gas revenues for the year ended December 31, 2015. Approximately 42% of our estimated proved reserves were located in Oklahoma as of December 31, 2015.
Because of this concentration in limited geographic concentration,areas, the success and profitability of our operations may be disproportionately exposed to the effect of regional events.factors relative to our competitors that have more geographically dispersed operations. These factors include, among others, fluctuations inothers: (i) the prices of crude oil and natural gas produced from wells in the regionregions and other regional supply and demand factors, including gathering, pipeline and rail transportation capacity constraints, availableconstraints; (ii) the availability of rigs, equipment, oil field services, supplies, labor and labor; (iii) the availability of processing and refining facilities; and (iv) infrastructure capacity. In addition, our operations in the North regionBakken field and Oklahoma may be adversely affected by seasonalsevere weather events such as floods, blizzards, ice storms and lease stipulations designed to protect wildlife,tornadoes, which can intensify competition for the items described above during months when drilling is possible and may result in periodic shortages. The concentration of our operations in the North regionlimited geographic areas also increases our exposure to changes in local laws and regulations, certain lease stipulations designed to protect wildlife, and unexpected events that may occur in this regionthe regions such as natural disasters, seismic events, industrial accidents or labor difficulties. Any one of these events has the potential to cause producing wells to be shut-in, delay operations, and growth plans, decrease cash flows, increase operating and capital costs and prevent development of lease inventory before expiration. Any of the risks described above could have a material adverse effect on our financial condition, results of operations and cash flows.

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Volatility in the financial markets or in global economic factors could adversely impact our business and financial condition.
United States and global economies may experience periods of turmoil and volatility from time to time, which may be characterized by diminished liquidity and credit availability, inability to access capital markets, high unemployment, unstable consumer confidence, and diminished consumer demand and spending. Economic turmoil or uncertainty could reduce demand for crude oilRecently, certain global economies have experienced periods of political unrest, slowing economic growth, rising interest rates, changing economic sanctions, and natural gas andcurrency volatility. These global macroeconomic conditions continue to put significant downward pressure on the prices of crude oil prices, and natural gas.a continuation of that trend could continue or exacerbate that pressure. This would negatively impactimpacts our revenues, margins, profitability, operating cash flows, liquidity and financial condition. Such weakness or uncertainty could also cause our commodity hedging arrangements to become economically ineffective if our counterparties are unable to perform their obligations or seek bankruptcy protection. Furthermore, our ability to collect receivables may be adversely impacted.
Historically, we have used cash flows from operations, borrowings under our revolving credit facility and proceeds from capital market transactions to fund capital expenditures. Volatility in U.S. and global financial and equity markets, including market

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disruptions, limited liquidity, and interest rate volatility, may negatively impact our ability to obtain needed capital on acceptable terms or at all and may increase our cost of financing. We have a revolving credit facility with lender commitments totaling $1.5 billion.$2.75 billion, which may be increased up to a total of $4.0 billion upon agreement with participating lenders. In the future, we may not be able to access adequate funding under our revolving credit facility as a result of (i) a decrease inif our credit ratings that triggers the reinstatement of a borrowing base requirement, subjecting us to the risk that other events may adversely impact the size of our borrowing base following reinstatement, (ii) a decline in commodity prices,lenders are unwilling or (iii) an unwillingness or inability on the part of our lending counterpartiesunable to meet their funding obligations or increase their commitments as required under the credit facility. Due to these and other factors, we cannot be certain that funding, if needed, will be available to the extent required andor on terms we find acceptable. If we are unable to access funding when needed on acceptable terms, we may not be able to fully implement our business plans, fund our capital program and commitments, complete new property acquisitions to replace reserves, take advantage of business opportunities, respond to competitive pressures, or refinance debt obligations as they come due. Should any of the above risks occur, they could have a material adverse effect on our financial condition, and results of operations.operations and cash flows.
Our exploration, development and exploitation projects require substantial capital expenditures. We may be unable to obtain needed capital or financing on acceptable terms, which could lead to a decline in our crude oil and natural gas reserves, production and production.revenues. In addition, funding our capital expenditures with additional debt will increase our leverage and doing so with equity securities may result in dilution that reduces the value of your stock.
The crude oil and natural gas industry is capital intensive. We make and expect to continue to make substantial capital expenditures in our business for the exploration, development, exploitation, production and acquisition of crude oil and natural gas reserves. In 2013,2015, we invested approximately $3.84$2.56 billion in our capital program, inclusive of property acquisitions. In October 2012, we announced a five-year growth plan to triple our production and proved reserves from year-end 2012 to year-end 2017. OurWe have budgeted $920 million for capital expenditures for 2014 are budgeted to be $4.05 billion, excludingin 2016 (excluding acquisitions which are not budgeted, with $3.69 billionbudgeted) of which $784 million is allocated for drilling,exploration and development drilling. Our planned 2016 capital workovers and facilities. To date,expenditures are substantially lower than our 2015 expenditures as a result of a planned reduction in spending prompted by significantly depressed commodity prices. We may find that additional reductions in our 2016 capital spending become necessary depending on market conditions.
Historically, our capital expenditures have been financed with cash generated by operations, borrowings under our revolving credit facility and proceeds from the issuance of debt and equity securities. The actual amount and timing of future capital expenditures may differ materially from our estimates as a result of, among others, changes in commodity prices, available cash flows, lack of access to capital, unbudgeted acquisitions, actual drilling results, the availability of drilling rigs and other services and equipment, the availability of transportation capacity, and regulatory, technological and competitive developments. Improvement in commodity prices may result in an increase in actual capital expenditures. Conversely, a significant decline in commodity prices could result in a decrease in actual capital expenditures. We intend to finance future capital expenditures primarily through cash flows from operations and borrowings under our credit facility; however, our financing needs may require us to alter or increase our capitalization substantially through the issuance of debt or equity securities or the sale of assets. The issuance of additional debt requires a portion of our cash flows from operations be used for the payment of interest and principal on our debt, thereby reducing our ability to use cash flows to fund working capital needs, capital expenditures and acquisitions. The issuance of additional equity securities could have a dilutive effect on the value of our common stock.
Our cash flows from operations and access to capital are subject to a number of variables, including but not limited to:
the amountvolume and value of our proved reserves;
the volume of crude oil and natural gas we are able to produce and sell from existing wells;
the prices at which crude oil and natural gas are sold;
our ability to acquire, locate and produce new reserves; and
the ability and willingness of our bankslenders to extend credit or of participants in the financialcapital markets to accept offerings ofinvest in our senior notes.notes or equity securities.
If revenues orAs a result of weakened oil and gas industry conditions from lower commodity prices, our ability to borrow may decrease as a result of lower crude oil or natural gas prices, operating difficulties, declines in reserves or for any other reason,and we may have limited ability to obtain the capital necessary to sustain our operations at currentplanned levels. If additional capital is needed,Our revolving credit facility has lender commitments totaling $2.75 billion, which may be increased up to a total of $4.0 billion upon agreement with participating lenders. However, we may notcan offer no assurance that our existing or other lenders would be ablewilling to obtain debtincrease their commitments under our credit facility. Such lenders could decline to do so based on our financial condition, the financial condition of our industry or equity financing.the economy as a whole or other reasons beyond our control. If cash generated by

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operations or cash available under our revolving credit facility is not sufficient to meet capital requirements and commitments, the failure to obtain additional financing could result in a curtailment of operations relating to development of our prospects, which in turn could lead to a decline in our crude oil and natural gas reserves and could adversely affect our business, financial condition, and results of operations, and cash flows.
We intend to finance future capital expenditures primarily through cash flows from operations, with any cash flow deficiencies expected to be funded by borrowings under our revolving credit facility. However, our financing needs may require us to alter or increase our capitalization substantially through the issuance of debt or equity securities or the sale of assets. The issuance of additional debt will require a portion of our cash flows from operations to be used for the payment of interest and principal on our debt, thereby reducing our ability to achieveuse cash flows to fund working capital needs, capital expenditures and acquisitions. The issuance of additional equity securities could have a dilutive effect on the value of our growth plan.common stock.

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Drilling for and producing crude oil and natural gas are high risk activities with many uncertainties that could adversely affect our business, financial condition or results of operations.
Our future financial condition and results of operations will depend on the success of our exploration, development and production activities. Our crude oil and natural gas exploration and production activities are subject to numerous risks, beyond our control, including the risk that drilling will not result in commercially viable crude oil or natural gas production. Our decisions to purchase, explore, develop or otherwise exploit prospects or properties will depend in part on the evaluation of data obtained through geophysical and geological analyses, production data, and engineering studies, the results of which are often inconclusive or subject to varying interpretations. Our cost of drilling, completing and operating wells may be uncertain before drilling commences.
Risks we face while drilling include, but are not limited to, failing to place our well bore in the desired target producing zone; not staying in the desired drilling zone while drilling horizontally through the formation; failing to run our casing the entire length of the well bore; and not being able to run tools and other equipment consistently through the horizontal well bore. Risks we face while completing our wells include, but are not limited to, not being able to fracture stimulate the planned number of stages; failing to run tools the entire length of the well bore during completion operations; and not successfully cleaning out the well bore after completion of the final fracture stimulation stage.
Further, many factors may curtail, delay or cancel scheduled drilling projects, including:including but not limited to:
abnormal pressure or irregularities in geological formations;
shortages of or delays in obtaining equipment or qualified personnel;
shortages of or delays in obtaining components used in hydraulic fracturingfracture stimulation processes such as water and proppants;
mechanical difficulties, fires, explosions, equipment failures or accidents, including ruptures of pipelines or train derailments;
adverse weather conditionsrestrictions on the use of underground injection wells for disposing of waste water from oil and natural disasters, such as flooding, blizzards and ice storms;gas activities;
political events, public protests, civil disturbances, terrorist acts or cyber attacks;
reductionsdecreases in, or extended periods of historically low, crude oil and natural gas prices;
limited availability of financing with acceptable terms;
title problems;
environmental hazards, such as uncontrollable flows of crude oil, natural gas, brine, well fluids, hydraulic fracturing fluids, toxic gas or other pollutants into the environment, including groundwater and shoreline contamination;
spillage or mishandling of crude oil, natural gas, brine, well fluids, hydraulic fracturing fluids, toxic gas or other pollutants by us or by third party service providers or us;providers;
limitations in infrastructure, including transportation, processing and refining capacity, or the marketmarkets for crude oil and natural gas; and
delays imposed by or resulting from compliance with regulatory requirements including permitting.
Additionally, severe weather conditions and natural disasters such as flooding, tornadoes, seismic events, blizzards and ice storms affecting the areas in which we operate, including our corporate headquarters, could have a material adverse effect on our operations. The consequences of such events may include the evacuation of personnel, damage to drilling rigs or pipeline and rail transportation facilities, an inability to access well sites, destruction of information and communication systems, and the disruption of administrative and management processes, any of which could hinder our ability to conduct normal operations and could adversely affect our business, financial condition, results of operations and cash flows
Reserve estimates depend on many assumptions that maywill turn out to be inaccurate. Any material inaccuracies in these reserve estimates or underlying assumptions will materially affect the quantities and present value of our reserves. The Company's current estimates of reserves could change, potentially in material amounts, in the future.future, in particular due to a continued decline in, or an extended period of historically low, commodity prices.
The process of estimating crude oil and natural gas reserves is complex and inherently imprecise. It requires interpretation of available technical data and many assumptions, including assumptions relating to current and future economic conditions, production rates, drilling and operating expenses, and commodity prices. Any significant inaccuracy in these interpretations or assumptions could materially affect our estimated quantities and present value of our reserves. See Part I, Item 1. Business—

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Crude Oil and Natural Gas Operations, Operations—Proved Reserves for information about our estimated crude oil and natural gas reserves, PV-10, and Standardized Measure of discounted future net cash flows as of December 31, 2013.2015.
In order to prepare reservesreserve estimates, we must project production rates and the amount and timing of development expenditures. Our booked proved undeveloped reserves must be developed within five years from the date of initial booking under SEC reserve rules. Changes in the timing of development plans that impact our ability to develop such reserves in the required time frame have resulted, and may in the future result, in fluctuations in reserves between periods as reserves booked in one period may need to be removed in a subsequent period. In 2015, 98 MMBoe of proved undeveloped reserves were removed from our year-end reserve estimates due to various factors, including removals associated with drilling locations no longer scheduled to be developed within five years from the date of initial booking. Additionally, decreases in commodity prices in 2015 shortened the economic lives of certain producing properties and caused certain exploration and development projects to become uneconomic, which resulted in downward reserve revisions totaling 251 MMBoe in 2015.
We must also analyze available geological, geophysical, production and engineering data.data in preparing reserve estimates. The extent, quality and

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reliability of this data can vary with the uncertainty of decline curves and thewhich in turn can affect our ability to model heterogeneity of the porosity, permeability and pressure relationships in unconventional resources. The process also requires economic assumptions, based on historical data but projected into the future, about matters such as crude oil and natural gas prices, drilling and operating expenses, capital expenditures, taxes and availability of funds.
The prices used in calculating our estimated proved reserves are calculated by determining the unweighted arithmetic average of the first-day-of-the-month commodity prices for the preceding 12 months. For the year ended December 31, 2015, average prices used to calculate our estimated proved reserves were $50.28 per Bbl for crude oil and $2.58 per MMBtu for natural gas ($41.63 per Bbl for crude oil and $2.35 per Mcf for natural gas adjusted for location and quality differentials). Actual future prices may materially differ from those used in our year-end estimates.
Crude oil prices existing in February 2016 are significantly lower than the 2015 average price used to determine our year-end proved reserves. If crude oil prices do not increase significantly, our future calculations of estimated proved reserves will be based on lower prices which could result in our having to remove non-economic reserves from our proved reserves in future periods. Holding all other factors constant, if crude oil prices used in our year-end reserve estimates were decreased by $15.00 per barrel, thereby approximating the pricing environment existing in February 2016, our proved reserves at December 31, 2015 could decrease by approximately 146 MMBoe, or 12%. See Part I, Item 1. Business—Crude Oil and Natural Gas Operations—Proved Reserves—Proved Reserve and PV-10 Sensitivities for additional proved reserve sensitivities under various commodity price scenarios.
Actual future production, crude oil and natural gas prices, revenues, taxes, development expenditures, operating expenses and quantities of recoverable crude oil and natural gas reserves will vary and could vary significantly from our estimates. Any significant variance could materially affect the estimated quantities and present value of our reserves, which in turn could have an adverse effect on the value of our assets. In addition, we may adjust estimates of proved reserves, potentially in material amounts, to reflect production history, results of exploration and development activities, prevailing crude oil and natural gas prices and other factors, many of which are beyond our control.
The present value of future net revenues from our proved reserves will not necessarily be the same as the current market value of our estimated crude oil and natural gas reserves.reserves and, in particular, may be reduced due to the significant decline in commodity prices.
You should not assume the present value of future net revenues from our proved reserves is the current market value of our estimated crude oil and natural gas reserves. In accordance with SEC rules, weWe base the estimated discounted future net revenues from proved reserves on the 12-month unweighted arithmetic average of the first-day-of-the-month commodity prices for the preceding twelve months. Actual future prices may be materially higher or lower than the SEC pricingaverage prices used in the calculations. Actual future net revenues from crude oil and natural gas properties will be affected by factors such as:
the actual cost and timing of development and production expenditures;
the amount and timing of actual production;
the actual prices we receive for sales of crude oil and natural gas;
the actual cost and timing of development and production expenditures;
the timing and amount of actual production; and
changes in governmental regulations or taxation.
The timing of both our production and our incurrence of expenses in connection with the development and production of crude oil and natural gas properties will affect the timing and amount of actual future net revenues from proved reserves, and thus their actual present value. In addition, the use of a 10% discount factor, we use when calculating which is required by the SEC to be used to calculate

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discounted future net revenues for reporting purposes, may not be the most appropriate discount factor based on interest rates in effect from time to time and risks associated with our reserves or the crude oil and natural gas industry in general.
At December 31, 2015, the PV-10 value of our proved reserves totaled approximately $8.0 billion. The average prices used to estimate our proved reserves and PV-10 at December 31, 2015 were $50.28 per Bbl for crude oil and $2.58 per MMBtu for natural gas ($41.63 per Bbl for crude oil and $2.35 per Mcf for natural gas adjusted for location and quality differentials). Actual future prices and costs may materially differ from those used in our estimate ofyear-end estimates.
Crude oil prices existing in February 2016 are significantly lower than the present value of future net revenues. If2015 average price used to determine our year-end PV-10. Holding all other factors constant, if crude oil prices declineused in our year-end PV-10 estimates were decreased by $10.00$15.00 per barrel, thereby approximating the pricing environment existing in February 2016, our PV-10 as ofat December 31, 2013 would2015 could decrease by approximately $2.8 billion. If natural gas prices decline by $1.00 per Mcf, our$3.4 billion, or 42%. See Part I, Item 1. Business—Crude Oil and Natural Gas Operations—Proved Reserves—Proved Reserve and PV-10 as of December 31, 2013 would decrease approximately $1.3 billion.Sensitivities for additional PV-10 sensitivities under various commodity price scenarios.
Our use of enhanced recovery methods creates uncertainties that could adversely affect our results of operations and financial condition.
One of our business strategies is to economically develop unconventional crude oil and natural gas resource plays using enhanced recovery technologies. For example, we may inject water and high-pressure air into formations on some of our properties to increase the production of crude oil and natural gas. The additional production and reserves attributable to the use of these enhanced recovery methods are inherently difficult to predict. If enhanced recovery programs do not allow for the extraction of crude oil and natural gas in the manner or to the extent we anticipate, our future results of operations and financial condition could be materially adversely affected.
If crude oil and natural gas prices decrease, weWe may be required to further write down the carrying values of our crude oil and natural gas properties.properties if commodity prices remain at their currently low levels or decline further.
Accounting rules require that we periodically review the carrying values of our crude oil and natural gas properties for possible impairment. Proved properties are reviewed for impairment on a field-by-field basis each quarter. We use the successful efforts method of accounting whereby the estimated future cash flows expected in connection with a field are compared to the carrying amount of the field to determine if the carrying amount is recoverable. If the carrying amount of the field exceeds its estimated undiscounted future cash flows, the carrying amount of the field is reduced to its estimated fair value using a discounted cash flow model.
Based on specific market factors, prices, and circumstances at the time of prospective impairment reviews, and the continuing evaluation of development plans, production data, economics and other factors, we may be required to write down the carrying values of our crude oil and natural gas properties. A write-down constitutesresults in a non-cash charge to earnings. We may incurhave incurred impairment charges in the past and may incur additional impairment charges in the future, particularly if commodity prices remain at their currently low levels or decline further, which could have a material adverse effect on our results of operations for the periods in which such charges are taken.

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Unless we replace our crude oil and natural gas reserves, our reserves and production will decline, which could adversely affect our cash flows and results of operations.
Unless we conduct successful exploration, development and exploitation activities or acquire properties containing proved reserves, our proved reserves will decline as those reserves are produced. Producing crude oil and natural gas reservoirs are generally characterized by declining production rates that vary depending upon reservoir characteristics and other factors. Our future crude oil and natural gas reserves and production, and therefore our cash flows and results of operations, are highly dependent on our success in efficiently developing our current reserves and economically finding or acquiring additional recoverable reserves. We may not be able to develop, find or acquire sufficient additional reserves to replace our current and future production. If we are unable to replace our current and future production, the value of our reserves will decrease, and our business, financial condition and results of operations could be materially adversely affected.
The unavailability or high cost of additional drilling rigs, equipment, supplies, personnel and oilfield services could adversely affect our ability to execute our exploration and development plans within budget and on a timely basis.
Shortages orIn the high costregions in which we operate, there have historically been shortages of drilling rigs, equipment, supplies, personnel or oilfield services, including key components used in hydraulic fracturingfracture stimulation processes such as water and proppants, as well as high costs associated with these critical components of our operations. As a result of the significant decrease in commodity prices, the number of providers of the materials and services described above has decreased in the regions where we operate. As a result, the likelihood of experiencing shortages or higher costs of materials and services may be increased in connection with any period of commodity price recovery. Such shortages or high costs could delay the execution of our drilling plans or cause us to incur significant expenditures not provided for in our capital budget, which could have a material adverse effect on our business, financial condition, or results of operations.operations and cash flows.

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We may incur substantial losses and be subject to substantial liability claims as a result of our crude oil and natural gas operations. Additionally, we may not be insured for, or our insurance may be inadequate to protect us against, these risks.
We are not insured against all risks. Losses and liabilities arising from uninsured and under insuredunder-insured events could materially and adversely affect our business, financial condition or results of operations. Our crude oil and natural gas exploration and production activities are subject to all of the operating risks associated with drilling for and producing crude oil and natural gas, including the possibility of:
environmental hazards, such as uncontrollable flows of crude oil, natural gas, brine, well fluids, hydraulic fracturing fluids, toxic gas or other pollutants into the environment, including groundwater and shoreline contamination;
abnormally pressured formations;
mechanical difficulties, such as stuck oilfield drilling and service tools and casing collapse;
fires, explosions and ruptures of pipelines;
loss of product or property damage occurring as a result of transfer to a rail car or train derailments;
personal injuries and death;
adverse weather conditions and natural disasters; and
spillage or mishandling of crude oil, natural gas, brine, well fluids, hydraulic fracturing fluids, toxic gas or other pollutants by us or by third party service providers or us.providers.
Any of these risks could adversely affect our ability to conduct operations or result in substantial losses to us as a result of:
injury or loss of life;
damage to or destruction of property, natural resources and equipment;
pollution and other environmental damage;
regulatory investigations and penalties;
suspension of our operations; and
repair and remediation costs.costs; and
litigation.
We may elect not to obtain insurance if we believe the cost of available insurance is excessive relative to the risks presented. In addition, pollution and environmental risks are generally are not fully insurable. The occurrence of an event not fully covered by insurance could have a material adverse effect on our business, financial condition, and results of operations.operations and cash flows.
Prospects we decide to drill may not yield crude oil or natural gas in economically producible quantities.
Prospects we decide to drill that do not yield crude oil or natural gas in economically producible quantities may adversely affect our results of operations and financial condition. In this report, we describe some of our current prospects and plans to explore

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and develop those prospects. Our prospects are in various stages of evaluation, ranging from a prospect which is ready to drill to a prospect that will requirerequiring substantial additional seismic data processing and interpretation. It is not possible to predict with certainty in advance of drilling and testing whether any particular prospect will yield crude oil or natural gas in sufficient quantities to recover drilling or completion costs or be economically producible. The use of seismic data and other technologies and the study of producing fields in the same area will not enable us to know conclusively prior to drilling whether crude oil or natural gas will be present or, if present, whether crude oil or natural gas will be present in economically producible quantities. We cannot assure you that the analogies we draw from available data from other wells, more fully explored prospects or producing fields will be applicable to our drilling prospects.
Our identified drilling locations are scheduled out over several years, making them susceptible to uncertainties that could materially alter the occurrence or timing of their drilling.
Our management has specifically identified and scheduled drilling locations as an estimation of our future multi-year drilling activities on our existing acreage. These drilling locations represent a significant part of our growth strategy. Our ability to drill and develop these locations depends onis subject to a number of uncertainties, including crude oil and natural gas prices, the availability of capital, costs, drilling results, regulatory approvals, available transportation capacity, and other factors. If future drilling results in these projects do not establish sufficient reserves to achieve an economic return, we may curtail drilling in these projects. Because of these uncertainties, we do not know if the numerous potential drilling locations we have identified will ever be drilled or if we will be able to produce crude oil or natural gas from these or any other

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potential drilling locations.locations in sufficient quantities to achieve an economic return. In addition, unless production is established within the spacing units covering the undeveloped acres on which some of the locations are identified, the leases for such acreage will expire. IfCurrently low commodity prices, reduced capital spending and numerous other factors, many of which are beyond our control, could result in our failure to establish production on undeveloped acreage, and, if we are not able to renew leases before they expire, any proved undeveloped reserves associated with such leases will be removed from our proved reserves. The combined net acreage expiring in the next three years represents 60% of our total net undeveloped acreage at December 31, 2013.2015. At that date, we had leases representing 249,525320,188 net acres expiring in 2014, 368,7002016, 283,590 net acres expiring in 2015,2017, and 296,360112,478 net acres expiring in 2016.2018. Our actual drilling activities may materially differ from those presently identified, which could adversely affect our business.
The development of our proved undeveloped reserves may take longer and may require higher levels of capital expenditures than we currently anticipate. Our proved undeveloped reserves may not be ultimately developed or produced.
At December 31, 2015, approximately 57% of our total estimated proved reserves (by volume) were undeveloped and may not be ultimately developed or produced. Recovery of undeveloped reserves requires significant capital expenditures and successful drilling operations. Our reserve estimates assume we can and will make these expenditures and conduct these operations successfully. These assumptions may not prove to be accurate. Our reserve report at December 31, 2015 includes estimates of total future development costs over the next five years associated with our proved undeveloped reserves of approximately $6.5 billion. We cannot be certain the estimated costs of the development of these reserves are accurate, development will occur as scheduled, or the results of such development will be as estimated. If we choose not to spend the capital to develop these reserves, or if we are not otherwise able to successfully develop these reserves as a result of our inability to fund necessary capital expenditures or otherwise, we will be required to remove the associated volumes from our reported proved reserves. In addition, under the SEC’s reserve rules, because proved undeveloped reserves may be booked only if they relate to wells scheduled to be drilled within five years of the date of booking, we may be required to remove any proved undeveloped reserves not developed within this five-year time frame. Such removals have occurred in the past and may occur in the future. A removal of such reserves could adversely affect our operations. In 2015, 98 MMBoe of proved undeveloped reserves were removed from our year-end reserve estimates due to various factors, including removals associated with drilling locations no longer scheduled to be developed within five years from the date of initial booking. Additionally, decreases in commodity prices in 2015 caused certain exploration and development projects to become uneconomic, which resulted in downward revisions of proved undeveloped reserves totaling 181 MMBoe in 2015.
Our business depends on crude oil and natural gas transportation, processing and refining facilities, most of which are owned by third parties, and on the availability of rail transportationtransportation.
The marketability ofvalue we receive for our crude oil and natural gas production depends in part on the availability, proximity and capacity of pipeline and rail systems and processing and refining facilities owned by third parties. The lackinadequacy or unavailability of capacity on these systems and facilities could result in the shut-in of producing wells or the delay, or discontinuance of, development plans for properties. Although we have some contractual control over the transportation of our product, materialproducts, changes in these business relationships could materially affect our operations. Federal and state regulation of crude oil and natural gas production and transportation, tax and energy policies, changes in supply and demand, pipeline pressures, damageor failure to or destruction of pipelines and rail systems, labor disputes and general economic conditionsobtain such services on acceptable terms could adversely affect our abilityoperations. If our production becomes shut-in for any of these or other reasons, we would be unable to produce, gather, transport and sell crude oil and natural gas. We presently transport a significant portionrealize revenue from those wells until other arrangements were made for the sale or delivery of operated crude oil production from our North region to market centers by rail, with approximately 70% of such production being shipped by rail in December 2013.products.
The disruption of third-party pipelinestransportation, processing or rail transportationrefining facilities due to labor disputes, maintenance, civil disturbances, public protests, terrorist attacks, cyber attacks, adverse weather, natural disasters, seismic events, changes in tax and energy policies, federal, state and international regulatory developments, changes in supply and demand, equipment failures or accidents, including pipeline ruptures or train derailments, and general economic conditions could negatively impact our ability to market and deliver our products and achieve the most favorable prices for our crude oil and natural gas production. We have no control over when or if access to such pipeline or rail facilities would be restored or whatthe impact on prices would be charged.in the areas we operate. A significant shut-in of production in connection with any of the aforementioned items could materially affect our cash flows, and if a substantial portion of the impacted production is hedged at lower than market prices, those financial hedges would have to be paid from borrowings absent sufficient cash flows.
We transport a portion of the operated crude oil production from our North region to market centers using rail transportation facilities owned and operated by third parties, with approximately 17% of such production being shipped by rail in December 2015. See Part I, Item 1. Business—Regulation of the subsequent risk factor titledCrude Oil and Natural Gas Industry—Regulation of sales and transportation of crude oil and natural gas liquids Proposed legislation and regulation under consideration could increase our operating costs, reduce our liquidity, delay our operations or otherwise alter the way we conduct our businessfor a discussion of regulations being introduced that could potentially impactimpacting the transportation of crude oil by rail. Compliance with regulations, including voluntary measures adopted by the railroad industry, impacting the type, design, specifications or construction of rail cars used to transport crude oil could result in severe transportation capacity constraints during the period in which new rail cars are retrofitted or constructed to meet specifications. We do not currently own or operate rail transportation facilities or rail cars; however, compliance with regulations that impact the testing or rail

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transportation of crude oil could increase our costs of doing business and limit our ability to transport and sell our crude oil at market centers throughout the United States, the consequences of which could have a material adverse effect on our financial condition, results of operations and cash flows.
Our business depends on the availability of water.water and the ability to dispose of waste water from oil and gas activities. Limitations or restrictions on our ability to obtain or dispose of water may have an adverse effect on our financial condition, results of operations and cash flows.
With current technology, water is an essential component of drilling and hydraulic fracturing processes. Limitations or restrictions on our ability to secure sufficient amounts of water, or to dispose of or recycle water after use, could adversely impact our operations. In some cases, water may need to be obtained from new sources and transported to drilling sites, resulting in increased costs. Moreover, the introduction of new environmental initiatives and regulations related to water acquisition or waste water disposal, including produced water, drilling fluids and other wastes associated with the exploration, development or production of hydrocarbons, could limit or prohibit our ability to utilize hydraulic fracturing or waste water injection wells.
In addition, concerns have been raised about the potential for seismic events to occur from the use techniquesof underground injection wells, a predominant method for disposing of waste water from oil and gas activities. New rules and regulations may be developed to address these concerns, possibly limiting or eliminating the ability to use disposal wells in certain locations and increasing the cost of disposal. We operate injection wells and utilize injection wells owned by third parties to dispose of waste water associated with our operations. Some states, including states in which we operate, have delayed permit approvals, mandated a reduction in injection volumes, or have shut down or imposed moratoria on the use of injection wells. Regulators in some states, including states in which we operate, are considering additional requirements related to seismic safety. For example, in Oklahoma, the Oklahoma Corporation Commission ("OCC") has adopted rules for operators of saltwater disposal wells in certain seismically-active areas in the Arbuckle formation of the state. These rules require disposal well operators, among other things, to conduct mechanical integrity testing or make certain demonstrations of such aswells’ respective depths that, depending on the depth, could require plugging the well and/or the reduction of volumes disposed in such wells. Oklahoma has adopted a “traffic light” system, wherein the OCC reviews new or existing disposal wells for proximity to faults, seismicity in the area and other factors in determining whether such wells should be permitted, permitted only with special restrictions, or not permitted.
Compliance with existing or new environmental regulations and permit requirements governing the withdrawal, storage, and use of water necessary for hydraulic fracturing. Thisfracturing of wells or the disposal of waste water may increase our operating costs or may cause us to delay, curtail or discontinue our exploration and development plans, which could have a material adverse effect on our ability to economically findbusiness, financial condition, results of operations and develop crude oil and natural gas reserves.cash flows.

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We have been an early entrant into new or emerging plays. As a result, our drilling results in these areas are uncertain, and the value of our undeveloped acreage will decline if drilling results are unsuccessful.
While our costs to acquire undeveloped acreage in new or emerging plays have generally been less than those of later entrants into a developing play, our drilling results in thesenew or emerging areas are more uncertain than drilling results in developed and producing areas. Since new or emerging plays have limited or no production history, we are unable to use past drilling results in those areas to help predict our future drilling results. As a result, our cost of drilling, completing and operating wells in these areas may be higher than initially expected, and the value of our undeveloped acreage will decline if drilling results are unsuccessful.
We are subject to complex federal, state and local laws and regulations that could adversely affect the cost, manner or feasibility of conducting our operations or expose us to significant liabilities.
Our crude oil and natural gas exploration and production operations are subject to complex and stringent federal, state and local laws and regulations, including those governing environmental protection, the occupational health and safety andaspects of our operations, the discharge of materials into the environment.environment, and the protection of certain plant and animal species. See Part I, Item 1. Business—Regulation of the Crude Oil and Natural Gas Industry for a description of the laws and regulations that affect us. In order to conduct operations in compliance with these laws and regulations, we must obtain and maintain numerous permits, approvals and certificates from various federal, state and local governmental authorities. Environmental regulations may restrict the types, quantities and concentration of materials that can be released into the environment in connection with drilling and production activities, limit or prohibit drilling activities on certain lands lying within wilderness, wetlands and other protected areas, and impose substantial liabilities for pollution resulting from our operations. In addition, we may experience delays in obtaining or be unable to obtain required permits, which may delay or interrupt our operations and limit our growth and revenues.

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Failure to comply with these laws and regulations may trigger a variety of administrative, civil and criminal enforcement measures, including investigatory actions, the assessment of monetary penalties, the imposition of remedial requirements, andor the issuance of orders or judgments limiting or enjoining future operations. Strict liability or joint and several liability may be imposed under certain laws, which could cause us to become liable for the conduct of others or for consequences of our own actions. For instance, an accidental release from one of our wells could subject us to substantial liabilities arising from environmental cleanup and restoration costs, claims made by neighboring landowners and other third parties for personal injury and property damage and fines or penalties for related violations of environmental laws or regulations.
Moreover, our costs of compliance with existing laws could be substantial and may increase, or unforeseen liabilities could be imposed, if existing laws and regulations are revised or reinterpreted or if new laws and regulations become applicable to our operations. If we are not able to recover the increased costs through insurance or increased revenues, our business, financial condition, and results of operations and cash flows could be adversely affected. See Part I, Item 1. Business—Regulation of the Crude Oil and Natural Gas Industry for a description of the laws and regulations that affect us.
Climate change legislation or regulations governing the emissions of “greenhouse gases” could result in increased operating costs and reduce demand for the crude oil, natural gas and natural gas liquids we produce.
In December 2009, theresponse to EPA published its findings that emissions of carbon dioxide, methane and other greenhouse gases present an endangerment toendanger human health and the environment, because emissions of such gases are, according to the EPA contributing to the warming of the Earth’s atmosphere and other climate changes. These findings by the EPA allow the agency to proceed with the adoption and implementation of severalhas adopted regulations that would restrict emissions of greenhouse gases under existing provisions of the federal Clean Air Act such as the so-called “tailoring rule” adopted in May 2010, which imposes permittingestablishing, among other things, Prevention of Significant Deterioration ("PSD") and bestconstruction and Title V operating permit reviews for certain large stationary sources. Facilities required to obtain PSD permits for greenhouse gas emissions are also required to meet “best available control technology requirementstechnology” standards established on a case-by-case basis. We currently do not have any facilities that are required to adhere to the largest greenhouse gas stationary sources. In November 2010,PSD or Title V permit requirements; however, attempts by the EPA also finalized its greenhouse gas reporting requirements for certainto aggregate multiple oil and gas production facilities, that emit 25,000 metric tons each of which is currently and has long been regarded as an individual stationary source, for permitting purposes could result in the aggregate emissions from these independent facilities triggering Title V and/or more of carbon dioxide equivalent per year. The rule requires annual reportingPSD requirements. EPA rulemakings related to greenhouse gas emissions could adversely affect our operations and restrict or delay our ability to obtain air permits for new or modified sources.
In addition, the EPA has adopted rules requiring the monitoring and reporting of greenhouse gas emissions by such regulated facilities.
from specified onshore and offshore oil and gas production sources in the United States on an annual basis, which include certain of our operations. In April 2012,August 2015, the EPA issued final rules that establishedproposed new airregulations setting methane emission controlsstandards for crudenew and modified oil and natural gas production and natural gas processing operations. These rules were publishedand transmission facilities as part of the Obama Administration’s efforts to reduce methane emissions from the oil and gas sector by up to 45% from 2012 levels by 2025. The proposed regulations are expected to be finalized in 2016. On January 22, 2016, the Federal RegisterBureau of Land Management issued a pre-publication version of a proposed venting and flaring rule, which is expected to be finalized in August 2012. The EPA’s rule package includes New Source Performance Standards to2016 and, like the forthcoming EPA regulations, will address methane emissions of sulfur dioxide and VOCs and a separate set of emission standards to address hazardous air pollutants frequently associated withfrom crude oil and natural gas sources. Recently, the EPA has increased the level of Clean Air Act enforcement activity within the upstream oil and gas sector, focusing on alleged violations related to emissions of greenhouse gases and volatile organic compounds (“VOCs”) from production facilities.  To the extent the EPA experiences success in connection with enforcement efforts in a given geographical area, it may decide to extend such efforts to additional areas, including those where we have significant operations. The EPA may also choose to focus its initial efforts with respect to any new enforcement initiative on an area where we have significant operations. 
In December 2015, a global climate agreement was reached in Paris at the 21st Conference of Parties organized by the United Nations under the Framework Convention on Climate Change. The agreement, which goes into effect in 2020, resulted in nearly 200 countries, including the United States, committing to work towards limiting global warming and processing activities.agreeing to a monitoring and review process of greenhouse gas emissions. The final rulesagreement includes binding and non-binding elements and did not require ratification by the use of reduced emission completions or “green completions”U.S. Congress. Nonetheless, the agreement may result in increased political pressure on all hydraulically-fractured wells completed or refractured after January 1, 2015 in orderthe United States to achieve a 95% reductionensure continued compliance with enforcement measures under the Clean Air Act and may spur further initiatives aimed at reducing greenhouse gas emissions in the emission of VOCs. The rules also establish specific new requirements regarding emissions from compressors, controllers, dehydrators, storage tanks and other production equipment. These rules may require modifications to our operations, including the installation of new equipment to control emissions from our wells by January 1, 2015. Compliance with such rules could result in significant costs, including increased capital expenditures and operating costs, and could adversely impact our business.future.
In addition, the U.S.While Congress has from time to time considered legislation to reduce emissions of greenhouse gases, and almost halfthere has not been significant activity in the form of the states, including states in which we operate, have enacted or passed measuresadopted legislation to reduce greenhouse gas emissions at the federal level in recent years. In the absence of such federal legislation, a number of state and regional efforts have emerged that are aimed at tracking and reducing greenhouse gases, primarily through the planned developmentgas emissions by means of cap and trade programs that typically require major sources of greenhouse gas emission inventories and/or regional

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greenhouse gas cap-and-trade programs. Most of these cap-and-trade programs work by requiring either major sources of emissions, or major producers of fuelssuch as electric power plants, to acquire and surrender emission allowances with the number of allowances availablein return for purchase reduced each year until the overallemitting greenhouse gas emission reduction goal is achieved. These reductions may cause the cost of allowances to escalate significantly over time.gases.
The adoption and implementation of regulations that require reporting of greenhouse gases or otherwise limit emissions of greenhouse gases from our equipment and operations could require us to incur costs to monitor and report on greenhouse gas emissions or install new equipment to reduce emissions of greenhouse gases associated with our operations. In addition, these regulatory initiativessubstantial limitations on greenhouse gas emissions could drive downadversely affect the demand for our products by stimulating demand for alternative forms of energy that do not rely on combustion of fossil fuels that serve as a major source of greenhousethe crude oil and natural gas emissions,we produce, which could have a material adverse effect on our business, financial condition, and results of operations.operations and cash flows.

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Finally, it should be noted some scientists have concluded that increasing concentrations of greenhouse gases in the Earth’s atmosphere may produce climate changes that have significant physical effects, such as increased frequency and severity of storms, droughts, floods andor other climatic events. If any such effects were to occur as a result of climate change or otherwise, they could have an adverse effect on our assets and operations.
Federal and state legislation and regulatory initiatives relating to hydraulic fracturing could result in increased costs and additional operating restrictions or delays and inability to book future reserves.
A significant majority of our operations utilize hydraulicHydraulic fracturing is an important and commonly used process in the completion of crude oil and natural gas wells in low-permeability formations. Hydraulic fracturing involves the high-pressure injection of water, sand and additives into rock formations to stimulate crude oil and natural gas production. Some activists have attempted to linkIn recent years there has been increased public concern regarding an alleged potential for hydraulic fracturing to various environmental problems, including adverse effects toadversely affect drinking water supplies as well as migration of methane and other hydrocarbons.to induce seismic events. As a result, several federal and state agencies are studying potential environmental risks with respectconsidering legislation that would increase the regulatory burden imposed on hydraulic fracturing.
At the federal level, the EPA has asserted federal regulatory authority pursuant to hydraulic fracturing or evaluating whether to restrict its use. From time to time legislation has been introduced in the U.S. Congress to amend the federal Safe Drinking Water Act to eliminate an existing exemption for("SDWA") over certain hydraulic fracturing activities frominvolving the definitionuse of “underground injection,” thereby requiringdiesel fuels and published permitting guidance in February 2014 related to such activities. In May 2014, the crude oil and natural gas industryEPA issued an Advance Notice of Proposed Rulemaking to obtain permits for hydraulic fracturing, and to require disclosure of the additives used in the process. If ever adopted, such legislation could establish an additional level of regulation and permitting at the federal level.
Scrutiny of hydraulic fracturing activities continues in other ways. The White House Councilcollect data on Environmental Quality is coordinating an administration-wide review of hydraulic fracturing practices, and a number of federal agencies are analyzing environmental issues associated with hydraulic fracturing. The EPA has commenced a multi-year study of the potential environmental impacts of hydraulic fracturing, the draft results of which are anticipated to be available in 2014. Further, in May 2012, the BLM issued a proposed rule that would require public disclosure of chemicals used in hydraulic fracturing operations and imposeunder Section 8 of the Toxic Substances Control Act. To date, no other operational requirements for allaction has been taken. Further, in April 2015 the EPA issued proposed regulations under the Clean Water Act governing discharges to publicly owned treatment works of waste water from hydraulic fracturing operationsand certain other natural gas operations. Moreover, in 2015 the EPA completed a study of the potential impacts of hydraulic fracturing activities on water resources and published a draft assessment in June 2015 for peer review and public comment. In its assessment, the EPA indicated it did not find evidence that hydraulic fracturing mechanisms caused widespread, systemic impacts on drinking water resources in the United States. Nonetheless, the results of the study or similar governmental reviews could spur initiatives to regulate hydraulic fracturing under the SDWA or otherwise. Finally, the U.S. Department of Interior issued final rules in March 2015 related to the regulation of hydraulic fracturing activities on federal lands, including Native American trust lands. BLM publishedrequirements for chemical disclosure, well bore integrity and handling of flowback water. The U.S. District Court of Wyoming has temporarily stayed implementation of this rule and a supplemental notice of proposed rulemaking on May 24, 2013, which replaced the proposed rulemaking issued by the agency in May 2012. Additionally, on February 11, 2014 the EPA issued guidance governing the use of diesel fuel in hydraulic fracturing fluids. The guidance identifies five different variations of diesel and outlines new permitting guidelines for their use, along with technical recommendations for meeting the standards.final decision remains pending. As of December 31, 2013,2015, we held approximately 183,200181,500 net undeveloped acres on federal land, representing approximately 12%15% of our total net undeveloped acres. In addition to these federal initiatives,

At the state level, several state and local governments,states, including states in which we operate, have movedadopted or are considering adopting legal requirements imposing more stringent permitting, disclosure, and well construction requirements on hydraulic fracturing activities. Local governments also may seek to require disclosureadopt ordinances within their jurisdictions regulating the time, place and manner of drilling activities in general or hydraulic fracturing fluid componentsactivities in particular or to otherwise regulate their use more closely.prohibit the performance of well drilling in general or hydraulic fracturing in particular. In certain areas of the United States, new drilling permits for hydraulic fracturing have been put on hold pending development of additional standards.
The adoption of any future federal, state or local law or implementing regulation imposing permitting or reporting obligations on, or otherwise limiting, the hydraulic fracturing process, or the discovery of groundwater contamination or other adverse environmental effects directly connected to hydraulic fracturing, could make it more difficult and more expensive to complete crude oil and natural gas wells in low-permeability formations and increase our costs of compliance and doing business, as well as delay, prevent or prohibit the development of natural resources from unconventional formations. In the event regulations are adopted thatto prohibit or significantly limit the use of hydraulic fracturing in states in which we operate, it would have a material adverse effect on our ability to economically find and develop crude oil and natural gas reserves in our strategic plays. The inability to achieve a satisfactory economic return could cause us to curtail or discontinue our exploration and development plans. Such a circumstanceplans, which would have a material adverse effect on our business, financial condition, results of operations and would impair our ability to implement our growth plan.

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Should we fail to comply with FERC, FTC and CFTC administered statutes and regulations on market behavior, we could be subject to substantial penalties and fines and other liabilities.
The FERC, under the EPAct 2005, and the FTC, under the Energy Independence and Security Act of 2007, may impose or seek to impose through judicial action penalties for violations of anti-market manipulation rules for natural gas, crude oil and petroleum products of up to $1,000,000 per day for each violation. The CFTC, under the Commodity Exchange Act, has similar authority to assess penalties of up to the greater of $1,000,000 or triple the monetary gain for violation of anti-market manipulation rules for certain derivative contracts. Knowing or willful violations of the Commodity Exchange Act may also lead to a felony conviction. In addition, while we have not been regulated by the FERC as a natural gas company under the NGA, the FERC has adopted regulations that may subject us to the FERC annual reporting requirements. Additional rules and legislation pertaining to those and other matters may be considered or adopted by the FERC, the FTC or CFTC from time to time. Failure to comply with any of these regulations in the future could subject us to civil penalty liability, as well as the disgorgement of profits and third-party claims.cash flows.
Proposed legislation and regulationregulations under consideration could increase our operating costs, reduce our liquidity, delay our operations or otherwise alter the way we conduct our business.
Changes to existing laws or regulations, new laws or regulations, or changes in interpretations of laws and regulations may unfavorably impact us or the infrastructure used for transporting our products. Similarly, changes in regulatory policies and priorities could result in the imposition of new obligations upon us, such as increased reporting or audits. Any of these requirements could result in increased operating costs and could have a material adverse effect on our financial condition and results of operations. If such legislation, regulationregulations or other requirements are adopted, they could result in, among other items, additional limitations and restrictions on hydraulic fracturing of wells, restrictions on the disposal of waste water from oil and gas activities, restrictions on emissions of greenhouse gases, changes to the calculation of royalty payments, new safety requirements such as those involving rail transportation, described below, and additional regulation of private energy commodity derivative and hedging activities. These and other potential laws, regulations and other requirements could increase our operating costs, reduce our

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liquidity, delay our operations or otherwise alter the way we conduct our business. This, in turn, could have a material adverse effect on our financial condition, and results of operations.
We presently transport a significant portion of operated crude oil production from our North region to market centers by rail, with approximately 70% of such production being shipped by rail in December 2013. In response to recent train derailments occurring in the United States and Canada in 2013, U.S. regulators are implementing or considering new rules to address the safety risks of transporting crude oil by rail. On January 23, 2014, the NTSB issued a series of recommendations to address safety risks, including (i) requiring expanded hazardous material route planning for railroads to avoid populated and other sensitive areas, (ii) to develop an audit program to ensure rail carriers that carry petroleum products have adequate response capabilities to address worst-case discharges of the entire quantity of product carried on a train, and (iii) to audit shippers and rail carriers to ensure they are properly classifying hazardous materials in transportation and that they have adequate safety and security plans in place. Additionally, on February 25, 2014 the U.S. Department of Transportation issued an emergency order requiring all persons, prior to offering petroleum crude oil into transportation, to ensure such product is properly tested and classed and to assure all shipments by rail of petroleum crude oil be handled as a Packing Group I or II hazardous material. The introduction of these or other regulations that result in new requirements addressing the type, design, specifications or construction of rail cars used to transport crude oil could result in severe transportation capacity constraints during the period in which new rail cars are retrofitted or constructed to meet new specifications.
We do not currently own or operate rail transportation facilities or rail cars; however, the adoption of any regulations that impact the testing or rail transportation of crude oil could increase our costs of doing business and limit our ability to transport and sell our crude oil at favorable prices at market centers throughout the United States, the consequences of which could have a material adverse effect on our financial condition, results of operations and cash flows.
CertainFuture legislation may impose new taxes on crude oil or natural gas activities, including by eliminating or reducing certain federal income tax deductions currently available with respect to crude oil and natural gas exploration and development may be eliminated as a result of future legislation.development.
Among theIn recent years, legislation has been proposed to make significant changes contained in President Obama’s fiscal year 2014 budget proposal areto U.S. federal income tax laws, including the elimination or deferral of certain key U.S. federal income tax deductions currently available to crude oil and natural gas exploration and production companies. Such proposed changes include, but are not limited to,to: (i) the repeal of the percentage depletion allowance for crude oil and natural gas properties; (ii) the elimination of current deductions for intangible drilling and exploration and development costs; (iii) the elimination of the deduction for certain production activities; and (iv) an extension of the amortization period for certain geological and geophysical expenditures. These proposed
It is uncertain whether these or similar changes will be enacted or, if enacted, may negatively affect our financial condition and results of operations.how soon any such changes would become effective. The passage of such legislation in response to President Obama’s 2014 budget proposal or any other similar change in U.S. federal income tax law could eliminate or defer certain available tax deductions within theour industry, that are currently available with respect to crude oil and natural gas exploration and development, and any such changechanges could negativelyadversely affect our financial condition, results of operations and cash flows availableflows. Additionally, President Obama has proposed, as part of the Budget of the United States Government for capital expendituresFiscal Year 2017, to impose an “oil fee” of $10.25 per barrel equivalent of crude oil.  This fee would be collected on domestically produced and imported petroleum products.  If enacted into law, the fee would be phased in over five years, beginning October 1, 2016.  The adoption of this, or similar proposals, could result in increased operating costs and/or reduced consumer demand for petroleum products, which in turn could affect the prices companies such as ours receive for our ability to achieve our growth plan.crude oil.

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Regulations under the Dodd-Frank Act regarding derivatives could have an adverse effect on our ability to use derivative instruments to reduce the effect of commodity price risk and other risks associated with our business.
WeFrom time to time, we may use derivative instruments to manage commodity price risk. In 2010, the U.S. Congress adopted the Dodd-Frank Act, which, among other provisions, establishes federal oversight and regulation of the over-the-counter derivatives market and entities, such as us, that participate in that market. This financial reform legislation includes provisions that require many derivative transactions that were thenpreviously executed over-the-counter to be executed through an exchange and be centrally cleared. In addition, this legislation calls for the imposition of position limits for swaps, including swaps involving physical commodities such as crude oil and natural gas, which have been proposed but have not been finalized. It also calls for the establishment ofestablishes minimum margin requirements for uncleared swaps which have not been finalized.for swap dealers and major swap participants. If we do not qualify for the end user exception from any clearing requirements applicable to our swaps, the mandatory clearing requirements and revised capital requirements applicable to other market participants, such as swap dealers, may change the cost and availability of the swaps we use for managing commodity price risk. Some counterparties to our derivative instruments may also need or choose to spin off some of their derivative activities to a separate entity, which may not be as credit worthycredit-worthy as our current counterparty.
IfFurther, if we do not qualify for the end user exemption, from any applicable clearing requirements, the new regulations could significantly increase the cost of derivative contracts, (including through requirements to post collateral, which could adversely affect our available liquidity), materially alter the terms of derivative contracts, reduce the availability of derivatives to protect against risks we encounter, reduce our ability to monetize or restructure existing derivative contracts, lead to fewer potential counterparties, impose new recordkeeping and documentation requirements, and increase our exposure to less creditworthy counterparties. The proposed position limits may limit our ability to implement price risk management strategies if we are not able to qualify for any exemption from such limits. Additionally, if we do not qualify for the end user exemption, the margin requirements for uncleared swaps when enacted may require us to post collateral, which could adversely affect our available liquidity. If we reduce our use of derivatives becomes limited as a result of the regulations, our results of operations may become more volatile and our cash flows may be less predictable. Finally, the legislation was intended, in part, to reduce the volatility of crude oil and natural gas prices, which some legislators attributed to speculative trading in derivatives and commodity instruments related to crude oil and natural gas. Our revenues could therefore be adversely affected if a consequence of the legislation and regulations is to lower commoditycrude oil or natural gas prices. Any of these consequences could have a material adverse effect on our financial position, and results of operations.operations and cash flows.
Competition in the crude oil and natural gas industry is intense, making it more difficult for us to acquire properties, market crude oil and natural gas and secure trained personnel.
Our ability to acquire additional prospects and to find and develop reserves in the future will depend on our ability to evaluate and select suitable properties and to consummate transactions in a highly competitive environment for acquiring properties, marketing crude oil and natural gas and securing trained personnel. Also, there is substantial competition for capital available for investment in the crude oil and natural gas industry. Certain of our competitors may possess and employ financial, technical and personnel resources greater than ours. Those companies may be able to pay more for productive crude oil and natural gas

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properties and exploratory prospects and to evaluate, bid for and purchase a greater number of properties and prospects than our financial or personnel resources permit. In addition, companies may be able to offer better compensation packages to attract and retain qualified personnel than we are able to offer. The cost to attract and retain qualified personnel has increased in recent years due to competition and may increase substantially in the future. We may not be able to compete successfully in the future in acquiring prospective reserves, developing reserves, marketing hydrocarbons, attracting and retaining quality personnel and raising additional capital, which could have a material adverse effect on our financial condition, and results of operations.operations and cash flows.
Energy conservation measures or initiatives that stimulate demand for alternative forms of energy could reduce the demand for the crude oil and natural gas we produce.
Fuel conservation measures, climate change initiatives, governmental requirements for renewable energy resources, increasing consumer demand for alternative forms of energy, and technological advances in fuel economy and energy generation devices could reduce demand for the crude oil and natural gas we produce. The potential impact of changing demand for crude oil and natural gas services and products may have a material adverse effect on our business, financial condition, results of operations and cash flows.
The loss of senior management or technical personnel could adversely affect our operations.
We depend on the services of our senior management and technical personnel. The loss of the services of our senior management or technical personnel, including Harold G. Hamm, our Chairman and Chief Executive Officer, could have a material adverse effect on our operations. We do not maintain, nor do we plan to obtain, any insurance against the loss of any of these individuals.
We have limited control over the activities on properties we do not operate.
Some of the properties in which we have an ownership interest are operated by other companies and involve third-party working interest owners. As of December 31, 2013,2015, non-operated properties represented 19%20% of our estimated proved developed reserves, 10%9% of our estimated proved undeveloped reserves, and 13% of our estimated total proved reserves. We have limited ability to influence or control the operationoperations or future development of suchnon-operated properties, including compliance with environmental, safety and other regulations, or the amount of capital expenditures required to fund the development and operation of such properties. Moreover, we are dependent on the other working interest owners of suchon these projects to fund their contractual share of the capital expenditures of such projects.and operating expenditures. These limitations and our dependence on the operator and other working interest owners for these projects could cause us to incur unexpected future costs and materially adversely affectcould have a material adverse effect on our financial condition, and results of operations.operations and cash flows.

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Our revolving credit facility, three-year term loan, and the indentures for our senior notes contain certain covenants and restrictions that may inhibit our ability to make certain investments, incur additional indebtedness and engage in certain other transactions, which could adversely affect our ability to meet our future goals.
Our revolving credit facility and certain indentures for our senior notes includethree-year term loan contain restrictive covenants and restrictions that may, among others, restrict:
our investments, loans and advances and the paying of dividends and other restricted payments;
our incurrence of additional indebtedness;
the granting of liens, other than liens created pursuant to the credit facility and certain permitted liens;
mergers, consolidations and sales of all or a substantial part of our business or properties;
the hedging, forward sale or swap of our production of crude oil or natural gas or other commodities; and
the sale of assets.
Certain indentures for our outstanding senior notes may limit our ability and the ability of our restricted subsidiaries to:
to, among other things, incur assume or guarantee additional indebtedness, or issue redeemable stock;
pay dividends on stock, repurchase stock or redeem subordinated debt;
make certain investments;
enter into certainincur liens, engage in sale-leaseback transactions, with affiliates;
create certain liens on our assets;
sell or otherwise dispose of certain assets, including capital stock of subsidiaries;
restrict dividends, loans or other asset transfers from our restricted subsidiaries;
enter into new lines of business; and
consolidate with or merge, with or into,consolidate or sell all or substantially all of our properties to another person.
assets. Our revolving credit facility and three-year term loan also requires uscontain a requirement that we maintain a consolidated net debt to maintain certain financial ratios, suchtotal capitalization ratio of no greater than 0.65 to 1.00. This ratio represents the ratio of net debt (total debt less cash and cash equivalents) divided by the sum of net debt plus total shareholders’ equity plus, to the extent resulting in a reduction of total shareholders' equity, the amount of any non-cash impairment charges incurred, net of any tax effect, after June 30, 2014.
At December 31, 2015, our consolidated net debt to total capitalization ratio, as leverage ratios.defined, was 0.58 to 1.00. Our total debt would need to independently increase by approximately $2.6 billion, or 36%, above existing levels at December 31, 2015 (with no corresponding increase in cash or reduction in refinanced debt) to reach the maximum covenant ratio of 0.65 to 1.00. Alternatively, our total shareholders' equity would need to independently decrease by approximately $1.4 billion, or 30%, below existing levels at December 31, 2015 (excluding the after-tax impact of any non-cash impairment charges) to reach the maximum covenant ratio.
The restrictiveindentures governing our senior notes contain covenants that, among others, limit our ability to create liens securing certain indebtedness, enter into certain sale-leaseback transactions, and consolidate, merge or transfer certain assets.
The covenants in our revolving credit facility, three-year term loan, and the senior note indentures may restrict our ability to expand or pursue our business strategies. Our ability to comply with these and other provisions of our revolving credit facility, three-year term loan, or senior note indentures may be impacted by changes in economic or business conditions, results of operations or events beyond our control. The breach of any of these covenants could result in a default under our revolving credit facility, three-year term loan, or senior note indentures, in which case, depending on the actions taken by the lenders or

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trustees thereunder or their successors or assignees, such lenders or trustees could elect to declareresult in all amounts outstanding thereunder, together with accrued interest, to be due and payable. If our indebtedness is accelerated, our assets may not be sufficient to repay in full such indebtedness, which would adversely affect our financial condition and results of operations.
Increases in interest rates could adversely affect our business.
Our business and operating results can be harmedadversely affected by factors such as the availability, terms of and cost of capital, increases in interest rates, or a reductiondowngrade or other negative rating action with respect to our credit rating. In February 2016, our corporate credit rating was downgraded by S&P and Moody's in response to weakened oil and gas industry conditions and resulting revisions made to rating agency commodity price assumptions. These downgrades will cause the interest rates on our revolving credit ratings. These changes could cause our cost of doing businessfacility borrowings and three-year term loan to increase by 0.250% and 0.125%, respectively, and may limit our ability to pursue acquisition opportunities, reduce cash flows used for drilling and place us at a competitive disadvantage. For example, asAs of February 17, 2014,19, 2016, outstanding variable rate borrowings under our revolving credit facility were $560 millionand three-year term loan totaled $1.33 billion and the impact of a 1% increase in interest rates on this amount of debt would result in increased annual interest expense of approximately $5.6$13.3 million and a $3.5an $8.2 million decrease in our annual net income. We require continued access to capital. A significant reduction in cash flows from operations or the availability of credit could materially and adversely affect our ability to achieve our planned growthfinancial condition and operating results.results of operations.
The inability of ourjoint interest owners, derivative counterparties, significant customers, and service providers to meet their obligations to us may adversely affect our financial results.
Our principal exposure to credit risk is through the sale of our crude oil and natural gas production, which we market to energy marketing companies, refineriescrude oil refining companies, and affiliatesnatural gas gathering and processing companies ($656.2379 million in receivables at December 31, 2013),2015); our joint interest receivables ($350.0232 million at December 31, 2013),2015); and counterparty credit risk associated with our derivative instrument receivables ($3.6108 million at December 31, 2013)2015).
Joint interest receivables arise from billing the individuals and entities who own a partial interest in the wells we operate. These individuals and entities participate in our wells primarily based on their ownership in leases included in units on

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which we wish to drill. We can do very little to choose who participates in our wells.
We are also subject to credit risk due to concentration of our crude oil and natural gas receivables with several significant customers. The three largest purchaserspurchaser of our crude oil and natural gas during the year ended December 31, 20132015 accounted for a combined 38%11% of our total crude oil and natural gas revenues for the year. We have not generally do not requirerequired our counterparties to provide collateral to supportsecure crude oil and natural gas sales receivables owed to us.
Additionally, our use of derivative instruments involves the risk that our counterparties will be unable to meet their obligations underobligations.
Finally, we rely on oilfield service companies and midstream companies for services associated with the arrangements. The inabilitydrilling and completion of wells and for certain midstream services.
A continuation or failureworsening of our significant customers to meet their obligationsthe depressed commodity price environment may result in a material adverse impact on the liquidity and financial position of the parties with whom we do business, resulting in delays in payment of, or non-payment of, amounts owed to us, or their insolvency or liquidation may adversely affectdelays in operations, loss of access to equipment and facilities and similar impacts. These events could have an adverse impact on our financial condition, and results of operations.operations and cash flows, and it is difficult to predict how long the current depressed commodity price environment will continue and the ultimate impact it will have on the parties with which we do business.
Our derivative activities could result in financial losses or reduce our earnings.
To achieve more predictable cash flows and reduce our exposure to adverse fluctuations in the prices of crude oil and natural gas, from time to time we may enter into derivative instruments for a portion of our crude oil and/or natural gas production, including collars and fixed price swaps.production. SeePart II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Crude Oil and Natural Gas Hedging and Part II, Item 8. Notes to Consolidated Financial Statements—Note 5. Derivative Instruments for a summary of our crude oil and natural gas commodity derivative positions.positions as of December 31, 2015. We do not designate any of our derivative instruments as hedges for accounting purposes and we record all derivative instrumentsderivatives on our balance sheet at fair value. Changes in the fair value of our derivative instrumentsderivatives are recognized in current period earnings. Accordingly, our earnings may fluctuate significantly as a result of changes in crude oil and natural gas prices and resulting changes in the fair value of our derivative instruments.derivatives.
Derivative instruments expose us to the risk of financial loss in certain circumstances, including when:
production is less than the volume covered by the derivative instruments;
the counterparty to the derivative instrument defaults on its contractual obligations; or
there is an increase in the differential between the underlying price in the derivative instrument and actual prices received.

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In addition, our derivative arrangements limit the benefit we would receive from increases in the prices for crude oil and natural gas.commodity prices. Our decision on the quantity and price at which we choose to hedge our future production, if any, is based in part on our view of current and future market conditions and our desire to stabilize cash flows necessary for the development of our crude oil and natural gas reserves. As partWe may choose not to hedge future production if the pricing environment for certain time periods is not deemed to be favorable. Additionally, we may choose to liquidate existing derivative positions prior to the expiration of their contractual maturities in order to monetize favorable gain positions for the purpose of funding our risk management program, we have hedgedcapital program. Our crude oil sales for future periods are currently unhedged and directly exposed to continued volatility in crude oil market prices, whether favorable or unfavorable. Additionally, a significant portion of our forecasted production. We utilize a combination of derivative contracts based on West Texas Intermediate crude oil pricing, Inter-Continental Exchange pricingnatural gas sales for Brent crude oil,future periods are unhedged and Henry Hub pricingdirectly exposed to continued volatility in natural gas market prices, whether favorable or unfavorable.
A limited liability company for natural gas. We believewhich our derivative contracts provide relevant protection from price fluctuations in the U.S. markets where we deliver and sell our production. The pricing for Brent crude oil is believed to be a better reflection of the sales prices realized in certain U.S. market centers. However, in the event Brent prices increase significantly, the prices realized in those U.S. market centers may no longer be reflective of Brent prices. In such a circumstance, we may incur significant cash losses upon settling our crude oil derivative instruments. Such losses may be incurred without seeing a corresponding increase in revenues from higher realized prices on our physical sales of crude oil.
Our Chairman and Chief Executive Officer serves as sole manager beneficially owns approximately 68%76% of our outstanding common stock, giving him influence and control in corporate transactions and other matters, including a sale of our Company.
As of December 31, 2013,2015, a limited liability company for which Harold G. Hamm, our Chairman and Chief Executive Officer, serves as sole manager beneficially owned 126,337,891 shares of our outstanding common stock representing approximately 68%76% of our outstanding common shares. As a result, Mr. Hamm ishas control over our controlling shareholderCompany and will continue to be able to control the election of our directors, determine our corporate and management policies and determine, without the consent of our other shareholders, the outcome of certain corporate transactions or other matters submitted to our shareholders for approval, including potential mergers or acquisitions, asset sales and other significant corporate transactions. As controlling shareholder,Therefore, Mr. Hamm could cause, delay or prevent a change of control of our Company. The interests of Mr. Hamm and the limited liability company for which he serves as sole manager may not coincide with the interests of other holders of our common stock.
Several companies controlled by Mr. Hamm are in the business of gathering, processing, and marketing crude oil and natural gas or providing oilfield services in some of the areas where we have operations. We have historically entered into, and expect to continue entering,may enter into, transactions from time to time with thesecompanies affiliated companieswith Mr. Hamm if, after an independent review by our Audit Committee, it is determined such transactions are in the Company's best interests and are on terms no less favorable to us than could be achieved with an unaffiliated third party. These transactions may result in conflicts of interest between Mr. Hamm’s affiliated companies and us. We can provide no assurance that any such conflicts will be resolved in our favor.

36



We may be subject to risks in connection with acquisitions.
The successful acquisition of producing properties requires an assessment of several factors, including:including but not limited to:
recoverable reserves;
future crude oil and natural gas prices and theirlocation and quality differentials;
the quality of the title to acquired properties;
future development costs, operating costs and property taxes; and
potential environmental and other liabilities.
The accuracy of these assessments is inherently uncertain. In connection with these assessments, we perform a review, of the subject propertieswhich we believe to be generally consistent with industry practices.practices, of the subject properties. Our review will not reveal all existing or potential problems nor will it permit us to become sufficiently familiar with the properties to fully assess their deficiencies and capabilities prior to acquisition. Inspections may not always be performed on every well, and environmental problems are not necessarily observable even when an inspection is undertaken. Even when problems are identified, the seller of the subject properties may be unwilling or unable to provide effective contractual protection against all or part of the problems. We oftensometimes are not entitled to contractual indemnification for environmental liabilities and acquire properties on an “as is” basis.

A cyber incident could result in information theft, data corruption, operational disruption, and/or financial loss.
Our business has become increasingly dependent on digital technologies to conduct day-to-day operations including certain exploration, development and production activities. We depend on digital technology, including information systems and related infrastructure as well as cloud applications and services, to process and record financial and operating data, analyze seismic and drilling information, conduct reservoir modeling and reserves estimation, communicate with employees and business associates, perform compliance reporting and in many other activities related to our business. Our business associates, including vendors, service providers, purchasers of our production, and financial institutions, are also dependent on digital technology.

As dependence on digital technologies has increased, cyber incidents, including deliberate attacks or unintentional events, have also increased. Our technologies, systems, networks, and those of our business associates have been and may becomecontinue to be the target of cyber attacks or information security breaches, which could lead to disruptions in critical systems, unauthorized release of confidential or protected information, corruption of data or other disruptions of our business operations. In addition, certain cyber incidents, such as surveillance, may remain undetected for an extended period.

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A cyber attack involving our information systems and related infrastructure, or that of our business associates, could disrupt our business and negatively impact our operations in the followinga variety of ways, among others:including but not limited to:
unauthorized access to seismic data, reserves information, strategic information, or other sensitive or proprietary information could have a negative impact on our ability to compete for oil and gas resources;
data corruption or operational disruption of productionproduction-related infrastructure could result in a loss of production, or accidental discharge;
a cyber attack on a vendor or service provider could result in supply chain disruptions which could delay or halt our major development projects; and
a cyber attack on a third party gathering, pipeline, or rail service providertransportation systems could delay or prevent us from transporting and marketing our production, resulting in a loss of revenues.
These events could damage our reputation and lead to financial losses from remedial actions, loss of business or potential liability, which could have a material adverse effect on our financial condition, results of operations or cash flows.

To dateour knowledge we have not experienced any material losses relating to cyber attacks; however, there can be no assurance that we will not suffer suchmaterial losses in the future. As cyber threats continue to evolve, we may be required to expend significant additional resources to continue to modify or enhance our protective measures or to investigate and remediate any information security vulnerabilities.

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Item 1B.Unresolved Staff Comments
Item 1B.    Unresolved Staff Comments
There were no unresolved Securities and Exchange Commission staff comments at December 31, 2013.2015.
 
Item 2.Properties
The information required by Item 2 is contained in Part I, Item 1. Business—Crude Oil and Natural Gas Operations.

Item 3.Legal Proceedings
In November 2010, an allegeda putative class action was filed in the District Court of Blaine County, Oklahoma by Billy J. Strack and Daniela A. Renner as trustees of certain named trusts and on behalf of other similarly situated parties against the Company allegingCompany. The Petition alleged the Company improperly deducted post-production costs from royalties paid to plaintiffs and other royalty interest owners as categorized in the petition from crude oil and natural gas wells located in Oklahoma. The plaintiffs have alleged a number of claims, including breach of contract, fraud, breach of fiduciary duty, unjust enrichment, and other claims and seek recovery of compensatory damages, interest, punitive damages and attorney fees on behalf of the allegedproposed class. On November 3, 2014, plaintiffs filed an Amended Petition that did not add any substantive claims, but sought a “hybrid class action” in which they sought certification of certain claims for injunctive relief, reserving the right to seek a further class certification on money damages in the future. Plaintiffs filed an Amended Motion for Class Certification on January 9, 2015, that modified the proposed class to royalty owners in Oklahoma production from July 1, 1993, to the present (instead of 1980 to the present) and sought certification of over 45 separate “ issues” for injunctive or declaratory relief, again, reserving the right to seek a further class certification of money damages in the future. The Company has responded to the petition, deniedits amendment, and the motions for class certification denying the allegations and raisedraising a number of affirmative defenses. Discoverydefenses and legal arguments to each of the claims and filings. Certain discovery was undertaken and the “hybrid” motion was briefed by plaintiffs and the Company. A hearing on the “hybrid” class certification was held on June 1st and 2nd, 2015. On June 11, 2015, the trial court certified a “hybrid” class as requested by plaintiffs. The Company has appealed the trial court’s class certification order, which will be reviewed de novo by the appellate court. The appeal briefing is ongoingcomplete and information and documents continue to be exchanged.ready for determination by the court. An unsuccessful mediation was conducted on December 7, 2015. The Company is not currently able to estimate a reasonably possible loss or range of loss or what impact, if any, the action will have on its financial condition, results of operations or cash flows due to the preliminary status of the matter, the complexity and number of legal and factual issues presented by the matter and uncertainties with respect to, among other things, the nature of the claims and defenses, the potential size of the class, the scope and types of the properties and agreements involved, the production years involved, and the ultimate potential outcome of the matter. The class hasAlthough not been certified. Plaintiffscurrently at issue in the “hybrid” certification, plaintiffs have indicated that if the class is certified they may seek damagesalleged underpayments in excess of $165$200 million that they may claim as damages, which may increase with the passage of time, a majority of which would be comprised of interest. The Company disputes plaintiffs’ claims, disputes that the case meets the requirements for a class action and is vigorously defending the case. The Company will continue to assert its defenses to the case as certified as well as any future attempt to certify a money damages class.
The Company is involved in various other legal proceedings including, but not limited to, commercial disputes, claims from royalty and surface owners, property damage claims, personal injury claims, disputes with tax authorities and other matters. While the outcome of these legal matters cannot be predicted with certainty, the Company does not expect them to have a material effect on its financial condition, results of operations or cash flows.

Item 4.Mine Safety Disclosures
Not applicable.

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Part II
 
Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Our common stock is listed on the New York Stock Exchange and trades under the symbol “CLR.” The following table sets forth quarterly high and low sales prices for each quarter of the previous two years. No cash dividends were declared during the previous two years. 
 2013 2012 2015 2014
 Quarter Ended Quarter Ended Quarter Ended Quarter Ended
 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31 March 31 June 30 September 30 December 31
High $93.99
 $89.63
 $108.19
 $121.78
 $97.19
 $91.82
 $84.19
 $80.59
 $48.99
 $53.65
 $42.51
 $38.16
 $63.23
 $79.44
 $80.91
 $67.25
Low $74.03
 $72.35
 $86.56
 $100.25
 $67.94
 $61.50
 $61.02
 $66.07
 $32.51
 $41.74
 $22.56
 $19.60
 $52.00
 $60.51
 $65.22
 $30.06
Cash Dividend 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Certain of our senior note indentures restrict the payment of dividends under certain circumstances and weWe do not anticipate paying any cash dividends on our common stock in the foreseeable future. As of February 17, 2014,16, 2016, the number of record holders of our common stock was 126.1,157. Management believes, after inquiry, that the number of beneficial owners of our common stock is approximately 57,200.53,700. On February 17, 2014,16, 2016, the last reported sales price of our common stock, as reported on the New York Stock Exchange, was $113.27$18.46 per share.
The following table summarizes our purchases of our common stock during the quarter ended December 31, 2013:2015:
Period Total number of
shares purchased
 Average
price paid
per share
 Total number of shares
purchased as part of
publicly announced
plans or programs
 Maximum number of
shares that may yet be
purchased under the
plans or programs (3)
October 1, 2013 to October 31, 2013 
 
 
 
November 1, 2013 to November 30, 2013 92,303
(1)$116.45
(1)
 
December 1, 2013 to December 31, 2013 41,000
(2)$102.20
(2)
 
Total 133,303
 $112.07
 
 
Period Total number of
shares purchased (1)
 Average
price paid
per share (2)
 Total number of shares
purchased as part of
publicly announced
plans or programs
 Maximum number of
shares that may yet be
purchased under the
plans or programs (3)
October 1, 2015 to October 31, 2015 
 
 
 
November 1, 2015 to November 30, 2015 39,369

$34.29
 
 
December 1, 2015 to December 31, 2015 5,109

28.28
 
 
Total 44,478
 $33.60
 
 
 
(1)In connection with restricted stock grants under the Company's 2005 Long-Term Incentive Plan ("2005 Plan") and 2013 Long-Term Incentive Plan ("2013 Plan"), we adopted a policy that enables employees to surrender shares to cover their tax liability. EffectiveIn May 23, 2013, the 2013 Plan was adopted and replaced the Company's 2005 Plan. Restricted stock awards granted underShares indicated as having been purchased in the 2005 Plan prior to the adoption of the 2013 Plan will remain outstanding in accordance with their terms. The 92,303 shares purchasedtable above represent shares surrendered by employees to cover tax liabilities. We paid the associated taxes to the Internal Revenue Service.
(2)The price paid per share was the closing price of our common stock on the date the restrictions lapsed on such shares. We paid the associated taxes to the Internal Revenue Service.
(2)Represents shares of our common stock purchased by Harold G. Hamm, our Chairman, Chief Executive Officer, and controlling shareholder in an open-market transaction on December 11, 2013.
(3)We are unable to determine at this time the total amount of securities or approximate dollar value of securities that could potentially be surrendered to us pursuant to our policy that enables employees to surrender shares to cover their tax liability associated with the vesting of restrictions on shares.
Equity Compensation Plan Information
The following table sets forth the information as of December 31, 20132015 relating to equity compensation plans:
 
  Number of Shares
to be Issued Upon
Exercise of
Outstanding
Options
 Weighted-Average
Exercise Price of
Outstanding Options
 Remaining Shares
Available for Future
Issuance Under Equity
Compensation Plans (1)
Equity Compensation Plans Approved by Shareholders 
 
 9,813,98917,028,213
Equity Compensation Plans Not Approved by Shareholders 
 
 
 
(1)Represents the maximum remaining shares available for issuance under the 2013 Plan.

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Performance Graph
The following graph compares our common stock performance with the performance of the Standard & Poor’s 500 Stock Index (“S&P 500 Index”) and the Dow Jones US Oil and Gas Index (“Dow Jones US O&G Index”) for the period of December 20082010 through December 2013.2015. The graph assumes the value of the investment in our common stock and in each index was $100 on December 31, 20082010 and that any dividends were reinvested. The stock performance shown on the graph below is not indicative of future price performance.
The information provided in this section is being furnished to, and not filed with, the SEC. As such, this information is neither subject to Regulation 14A or 14C nor to the liabilities of Section 18 of the Securities Exchange Act of 1934, as amended.



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Item 6.Selected Financial Data
This section presents our selected consolidated financial data for the years ended December 31, 20092011 through 2013.2015. The selected financial data presented below is not intended to replace our consolidated financial statements.
The following consolidated financial data as it relates to each of the fiscal years ended December 31, 2009 through 2013, has been derived from our audited consolidated financial statements for such periods. You should read the following selected consolidated financial data in connection with Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations and our consolidated financial statements and related notes included elsewhere in this report. The selected consolidated results are not necessarily indicative of results to be expected in future periods.
 Year Ended December 31, Year Ended December 31,
 2013 2012 2011 2010 2009 2015 2014 2013 2012 2011
Income Statement data                    
In thousands, except per share data    
Crude oil and natural gas sales $3,606,774
 $2,379,433
 $1,647,419
 $948,524
 $610,698
 $2,552,531
 $4,203,022
 $3,573,431
 $2,349,500
 $1,633,718
Gain (loss) on derivative instruments, net (1) (191,751) 154,016
 (30,049) (130,762) (1,520) 91,085
 559,759
 (191,751) 154,016
 (30,049)
Total revenues 3,455,150
 2,572,520
 1,649,789
 839,065
 626,211
 2,680,167
 4,801,618
 3,421,807
 2,542,587
 1,636,088
Income from continuing operations 764,219
 739,385
 429,072
 168,255
 71,338
Net income 764,219
 739,385
 429,072
 168,255
 71,338
Basic earnings per share:          
Income (loss) from continuing operations (353,668) 977,341
 764,219
 739,385
 429,072
Net income (loss) (353,668) 977,341
 764,219
 739,385
 429,072
Basic earnings (loss) per share:          
From continuing operations $4.15
 $4.08
 $2.42
 $1.00
 $0.42
 $(0.96) $2.65
 $2.08
 $2.04
 $1.21
Net income per share $4.15
 $4.08
 $2.42
 $1.00
 $0.42
Shares used in basic earnings per share 184,075
 181,340
 177,590
 168,985
 168,559
Diluted earnings per share:          
Net income (loss) per share $(0.96) $2.65
 $2.08
 $2.04
 $1.21
Shares used in basic earnings (loss) per share 369,540
 368,829
 368,150
 362,680
 355,180
Diluted earnings (loss) per share:          
From continuing operations $4.13
 $4.07
 $2.41
 $0.99
 $0.42
 $(0.96) $2.64
 $2.07
 $2.03
 $1.20
Net income per share $4.13
 $4.07
 $2.41
 $0.99
 $0.42
Shares used in diluted earnings per share 184,849
 181,846
 178,230
 169,779
 169,529
Net income (loss) per share $(0.96) $2.64
 $2.07
 $2.03
 $1.20
Shares used in diluted earnings (loss) per share 369,540
 370,758
 369,698
 363,692
 356,460
Production                    
Crude oil (MBbl) (2) 34,989
 25,070
 16,469
 11,820
 10,022
 53,517
 44,530
 34,989
 25,070
 16,469
Natural gas (MMcf) 87,730
 63,875
 36,671
 23,943
 21,606
 164,454
 114,295
 87,730
 63,875
 36,671
Crude oil equivalents (MBoe) 49,610
 35,716
 22,581
 15,811
 13,623
 80,926
 63,579
 49,610
 35,716
 22,581
Average sales prices (3)                    
Crude oil ($/Bbl) $89.93
 $84.59
 $88.51
 $70.69
 $54.44
 $40.50
 $81.26
 $89.93
 $84.59
 $88.51
Natural gas ($/Mcf) 5.25
 4.20
 5.24
 4.49
 3.22
 $2.31
 $5.40
 $4.87
 $3.73
 $4.87
Crude oil equivalents ($/Boe) 72.71
 66.83
 73.05
 59.70
 45.10
 $31.48
 $66.53
 $72.04
 $65.99
 $72.45
Average costs per Boe ($/Boe) (3)          
Production expenses $5.69
 $5.49
 $6.13
 $5.87
 $6.89
Production taxes and other expenses 6.69
 6.42
 6.42
 4.82
 3.37
Depreciation, depletion, amortization and accretion 19.47
 19.44
 17.33
 15.33
 15.34
General and administrative expenses (4) 2.91
 3.42
 3.23
 3.09
 3.03
Average costs per unit (3)          
Production expenses ($/Boe) $4.30
 $5.58
 $5.69
 $5.49
 $6.13
Production taxes (% of oil and gas revenues) 7.8% 8.2% 8.3% 8.3% 8.0%
DD&A ($/Boe) $21.57
 $21.51
 $19.47
 $19.44
 $17.33
General and administrative expenses ($/Boe) (4) $2.34
 $2.92
 $2.91
 $3.42
 $3.23
Proved reserves at December 31                    
Crude oil (MBbl) 737,788
 561,163
 326,133
 224,784
 173,280
 700,514
 866,360
 737,788
 561,163
 326,133
Natural gas (MMcf) 2,078,020
 1,341,084
 1,093,832
 839,568
 504,080
 3,151,786
 2,908,386
 2,078,020
 1,341,084
 1,093,832
Crude oil equivalents (MBoe) 1,084,125
 784,677
 508,438
 364,712
 257,293
 1,225,811
 1,351,091
 1,084,125
 784,677
 508,438
Other financial data (in thousands)                    
Net cash provided by operating activities $2,563,295
 $1,632,065
 $1,067,915
 $653,167
 $372,986
 $1,857,101
 $3,355,715
 $2,563,295
 $1,632,065
 $1,067,915
Net cash used in investing activities (3,711,011) (3,903,370) (2,004,714) (1,039,416) (499,822) $(3,046,247) $(4,587,399) $(3,711,011) $(3,903,370) $(2,004,714)
Net cash provided by financing activities 1,140,469
 2,253,490
 982,427
 379,943
 135,829
 $1,187,189
 $1,227,715
 $1,140,469
 $2,253,490
 $982,427
EBITDAX (5) 2,839,510
 1,963,123
 1,303,959
 810,877
 450,648
 $1,978,896
 $3,776,051
 $2,839,510
 $1,963,123
 $1,303,959
Total capital expenditures 3,841,633
 4,358,572
 2,224,096
 1,237,189
 433,991
 $2,564,301
 $5,015,595
 $3,841,633
 $4,358,572
 $2,224,096
Balance Sheet data at December 31 (in thousands)                    
Total assets $11,941,182
 $9,140,009
 $5,646,086
 $3,591,785
 $2,314,927
Total assets (6) (7) $14,919,808
 $15,076,033
 $11,841,567
 $9,091,918
 $5,584,740
Long-term debt, including current maturities(6) 4,715,832
 3,539,721
 1,254,301
 925,991
 523,524
 $7,117,788
 $5,928,878
 $4,650,889
 $3,491,994
 $1,236,909
Shareholders’ equity 3,953,118
 3,163,699
 2,308,126
 1,208,155
 1,030,279
 $4,668,900
 $4,967,844
 $3,953,118
 $3,163,699
 $2,308,126
 


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(1)Derivative instruments are not designated as hedges for accounting purposes and, therefore, changes in the fair value of the instruments are shown separately from crude oil and natural gas sales. The amounts above include non-cash mark-to-market gains (losses) on derivative instruments of $21.5 million, $174.4 million, ($130.2) million, $199.7 million, $4.1 million, ($166.2) million and ($2.1)$4.1 million for the years ended December 31, 2015, 2014, 2013, 2012, and 2011, 2010, and 2009, respectively. Additionally, 2014 includes $433 million of gains recognized from crude oil derivative contracts that were settled in the fourth quarter of 2014 prior to their contractual maturities initially scheduled through December 2016.
(2)At various times, we have stored crude oil due to pipeline line fill requirements, low commodity prices, or transportation constraintsmarketing disruptions or we have sold crude oil from inventory. These actions result in differences between our produced and sold crude oil volumes. For 2015, crude oil sales volumes were 147 MBbls more than crude oil production volumes. For 2014, crude oil sales volumes were 408 MBbls less than crude oil production volumes. For 2013, crude oil sales volumes were 4 MBbls less than crude oil production volumes. For 2012, crude oil sales volumes were 112 MBbls less than crude oil production volumes. For 2011, crude oil sales volumes were 30 MBbls less than crude oil production volumes. For 2010, crude oil sales volumes were 78 MBbls more than crude oil production volumes. For 2009, crude oil sales volumes were 82 MBbls less than crude oil production volumes.
(3)Average sales prices and average costs per Boeunit have been computed using sales volumes and exclude any effect of derivative transactions.
(4)General and administrative expenses ($/Boe) include non-cash equity compensation expenses of $0.64 per Boe, $0.86 per Boe, $0.80 per Boe, $0.82 per Boe, $0.73 per Boe, $0.74 per Boe and $0.84$0.73 per Boe for the years ended December 31, 2015, 2014, 2013, 2012, 2011, 2010, and 2009,2011, respectively. Additionally, general and administrative expenses include corporate relocation expenses of $0.04 per Boe, $0.22 per Boe and $0.14 per Boe for the years ended December 31, 2013, 2012, and 2011. No corporate relocation expenses were incurred prior to 2011.2011 and after 2013.
(5)
We define EBITDAX representsas earnings before interest expense, income taxes, depreciation, depletion, amortization and accretion, property impairments, exploration expenses, non-cash gains and losses resulting from the requirements of accounting for derivatives, and non-cash equity compensation expense.expense, and losses on extinguishment of debt. EBITDAX is not a measure of net income or operating cash flows as determined by generally accepted accounting principles. Reconciliations of net income and operating cash flows to EBITDAX are provided in Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Non-GAAP Financial Measures.
(6)
Balances at December 31, 2014, 2013, 2012, and 2011 have been retroactively adjusted to reflect our June 2015 adoption of Accounting Standards Update ("ASU") 2015-03, Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which resulted in the reclassification of $69.0 million, $64.9 million, $47.7 million, and $17.4 million, respectively, of unamortized debt issuance costs from “Other noncurrent assets” to a reduction of “Long-term debt, net of current portion” on the consolidated balance sheets. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 1. Organization and Summary of Significant Accounting Policies—New accounting pronouncements for further discussion.
(7)
Balances at December 31, 2013, 2012, and 2011 have been retroactively adjusted to reflect our December 2015 adoption of ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which resulted in the reclassification of $34.7 million, $0.4 million, and $44.0 million, respectively, of deferred income tax assets to a non-current liability classification within “Deferred income tax liabilities, net” on the consolidated balance sheets. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 1. Organization and Summary of Significant Accounting Policies—New accounting pronouncements for further discussion. No deferred income tax asset balances existed on the balance sheet at December 31, 2014 that required reclassification.

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ITEM 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations
The following discussion and analysis should be read in conjunction with our consolidated financial statements and notes, as well as the selected consolidated financial data included elsewhere in this report. Our operating results for the periods discussed below may not be indicative of future performance. For additional discussion of crude oil and natural gas reserve information, please see Part I, Item 1. Business—Crude Oil and Natural Gas Operations. The following discussion and analysis includes forward-looking statements and should be read in conjunction with Part I, Item 1A. Risk Factors in this report, along with Cautionary Statement for the Purpose of the “Safe Harbor” Provisions of the Private Securities Litigation Reform Act of 1995 at the beginning of this report, for information about the risks and uncertainties that could cause our actual results to be materially different than our forward-looking statements.
Overview
We are an independent crude oil and natural gas company engaged in the exploration, development and production company with properties in the North, South, and East regions of the United States. The North region consists of properties north of Kansas and west of the Mississippi River and includes North Dakota Bakken, Montana Bakken, and the Red River units. The South region includes Kansas and all properties south of Kansas and west of the Mississippi River including various plays in the South Central Oklahoma Oil Province (“SCOOP”), Northwest Cana, and Arkoma areas of Oklahoma. The East region is comprised of undeveloped leasehold acreage east of the Mississippi River. In December 2012, we sold the producing crude oil and natural gas properties in our East region. The sold properties represented an immaterial portion of our operations and do not materially affect the comparability of the operating results and cash flows for the periods presented in this report. Our operations are geographically concentrated in the North region, with that region comprising approximately 77% of our crude oil and natural gas production and approximately 86% of our crude oil and natural gas revenues for the year ended December 31, 2013.
gas. We derive the majority of our operating income and cash flows from the sale of crude oil and natural gas. We focus ourgas and expect this to continue in the future. Our operations are primarily focused on exploration and development activities in large new or developingthe Bakken field of North Dakota and Montana and the SCOOP, STACK, and Northwest Cana areas of Oklahoma.
Business Environment and Outlook
Crude oil prices remained significantly depressed in 2015 and currently face continued downward pressure due to domestic and global supply and demand factors. The downward price pressure intensified in late 2015 and early 2016, with crude oil prices dropping below $27 per barrel in February 2016, a level not seen since 2003. Natural gas prices faced similar downward pressure in 2015, dropping below $1.70 per MMBtu in December 2015.
In light of the challenges facing our industry, our primary business strategies for 2016 will include: (1) optimizing cash flows through operating efficiencies and liquids-rich natural gas playscost reductions, (2) high-grading investments based on rates of return and opportunities to convert undeveloped acreage to acreage held by production, and (3) working to balance capital spending with cash flows to minimize new borrowings and maintain ample liquidity.
With the above strategies in mind, and given the uncertainty regarding the timing and magnitude of any price recovery, we have significantly reduced our planned non-acquisition capital spending for 2016 to $920 million, a reduction of 63% compared to $2.50 billion of non-acquisition capital spending in 2015. This non-acquisition investment level is designed to target capital expenditures and cash flows being relatively balanced for 2016 at an assumed average West Texas Intermediate benchmark crude oil price of approximately $37 per barrel for the year, with any cash flow deficiencies being funded by borrowings under our revolving credit facility. Our 2016 drilling program will focus on drilling de-risked acreage in core parts of our key operating areas that provide us the opportunity to acquireopportunities for converting undeveloped acreage positionsto acreage held by production, increasing capital efficiency, reducing finding and development costs, and maximizing rates of return.
Our 2016 capital budget reflects a planned reduction in operated rig count and deferral of certain well completion activities relative to 2015, primarily in the Bakken. At December 31, 2015, we operated 23 rigs on our properties, which we subsequently reduced to 19 operated rigs in early 2016 by dropping 4 rigs in the Bakken. We expect to maintain an average of 19 operated rigs for future drilling operations.full-year 2016 and plan to complete 71 net operated and non-operated wells in 2016, a 74% decrease compared to 271 net well completions in 2015. We have been successfulplan to defer well completion activities for most of our Bakken wells in targeting large repeatable resource plays where three dimensional seismic, horizontal drilling, geosteering technologies, advanced completion technologies (e.g., fracture stimulation)2016, which is expected to increase our inventory of drilled but uncompleted wells during the year. As a result of these and enhanced recovery technologies provide the meansother actions, our production is expected to economically developdecline to an average of approximately 200,000 Boe per day for 2016, a 10% decrease compared to 2015, which will likely result in lower sales volumes and produce cruderevenues in 2016 compared to 2015.
2015 Results
Production
Crude oil and natural gas reserves from unconventional formations. We expect growthproduction totaled 80,926 MBoe (221,715 Boe per day) in 2015, an increase of 27% over 2014. Crude oil production increased 20% in 2015 and natural gas production increased 44%. Crude oil represented 66% of our revenues2015 production compared to 70% for 2014. SCOOP comprised 28% of our total production for 2015 compared to 20% for 2014.
Production for the fourth quarter of 2015 totaled 20,694 MBoe (224,936 Boe per day), a 1% decrease compared to the third quarter of 2015 and operating income will primarily depend on commodity prices16% higher than the fourth quarter of 2014. Crude oil represented 65% of our production for the 2015 fourth quarter compared to 71% for the 2014 fourth quarter.

48



Our total Bakken production was 50,049 MBoe (137,120 Boe per day) for 2015, a 20% increase over 2014. Fourth quarter 2015 production in the Bakken totaled 12,545 MBoe (136,355 Boe per day), a 1% increase over the third quarter of 2015 and our ability4% higher than the fourth quarter of 2014.
Production in SCOOP totaled 22,479 MBoe (61,586 Boe per day) for 2015, a 75% increase over 2014. SCOOP production for the 2015 fourth quarter totaled 5,937 MBoe (64,534 Boe per day), a 7% decrease compared to increase our reservesthe third quarter of 2015 and related crude60% higher than the fourth quarter of 2014.
Revenues
Crude oil and natural gas production.revenues for 2015 decreased 39% compared to 2014 driven by a 50% decrease in realized crude oil prices and a 57% decrease in realized natural gas prices, the effect of which was partially offset by a 22% increase in crude oil sales volumes and a 44% increase in natural gas sales volumes.
2013 HighlightsCrude oil and natural gas revenues totaled $551.4 million for the 2015 fourth quarter, a 12% decrease from the 2015 third quarter and 39% lower than the 2014 fourth quarter. Crude oil sales prices for the 2015 fourth quarter averaged $34.23 per barrel, a 12% decrease from the 2015 third quarter and 44% lower than the 2014 fourth quarter. Crude oil sales volumes for the 2015 fourth quarter totaled 13,453 MBbls, a 1% decrease from the 2015 third quarter and 8% higher than the 2014 fourth quarter. Natural gas sales prices for the 2015 fourth quarter averaged $2.07 per Mcf, a 7% decrease from the 2015 third quarter and 52% lower than the 2014 fourth quarter. Natural gas sales volumes for the 2015 fourth quarter totaled 43,807 MMcf, a 2% decrease from the 2015 third quarter and 41% higher than the 2014 fourth quarter.
Proved reserves
At December 31, 2013,2015, our estimated proved reserves totaled 1,084.11,226 MMBoe, an increasea decrease of 38% over9% from proved reserves of 784.71,351 MMBoe at December 31, 2012.2014. Extensions and discoveries resulting from our exploration and developmentdrilling activities were the primary drivers of our proved reserves growth in 2013, adding 444.7added 253 MMBoe of proved reserves in 2015, which was more than offset by downward reserve revisions totaling 297 MMBoe prompted by lower commodity prices and changes in drilling plans and 81 MMBoe of production during the year. Our extensions and discoveries were primarily driven by successful drilling results and strong production growth in the Bakken field and the emerging SCOOP play. OurThe 12-month average price used to determine year-end proved reserves infor crude oil decreased 47% from $94.99 per Bbl for 2014 to $50.28 per Bbl for 2015, while the 12-month average price for natural gas decreased 41% from $4.35 per MMBtu for 2014 to $2.58 per MMBtu for 2015.
Bakken fieldproved reserves totaled 741.1663 MMBoe at year-end 2015, a decrease of 23% from 866 MMBoe at year-end 2014.
SCOOP proved reserves increased 12% from 370 MMBoe at year-end 2014 to 413 MMBoe at year-end 2015. SCOOP represented 34% of our total proved reserves at December 31, 2013, representing a 32% increase from 563.6 MMBoe2015 compared to 27% at year-end 2012. Proved reserves in the SCOOP play increased 241% from 62.92014.
Crude oil comprised 57%, or 701 MMBoe, at December 31, 2012 to 214.7 MMBoe at December 31, 2013. The year 2013 was an impactful year for SCOOP as our drilling results and results from others in the industry have helped establish a crude oil and liquids-rich natural gas productive fairway that has resulted in the booking of additional reserves from this emerging play.
Our properties in the Bakken field comprised 68% of our proved reserves at December 31, 2013, with SCOOP comprising 20% and the Red River units in North Dakota, South Dakota and Montana comprising 7%. The Bakken, SCOOP and Red River units comprised 72%, 8% and 10%, respectively, of our proved reserves2015 compared to 64% at year-end 2012. Estimated proved developed producing reserves were 404.8 MMBoe at December 31, 2013, representing 37% of our total estimated proved reserves compared with 39% at year-end 2012.
Crude oil reserves comprised 68%, or 737.8 MMBoe, of our estimated proved reserves at December 31, 2013 compared to 72% at December 31, 2012.2014. The decreased percentage of crude oil reserves at December 31, 2013 resulted primarily from the significant increase in SCOOP reserves as a percentage of our total reserves during the year, which have a higher concentration of liquids-rich natural gas compared to our other operating areas such as the Bakken.
We seekProved property impairments
Decreases in commodity prices in 2015 adversely impacted the recoverability of capitalized costs in certain operating areas and contributed to operate wells in which we own an interest. At December 31, 2013, we operated wells that accountedthe recognition of non-cash impairment charges for 87% of our total proved reserves and 86% of our PV-10. By controlling operations, we are able to more effectively manage the costs and timing of exploration and development of our properties including the drilling and completion methods used. Additionally, our business strategy has historically focused on reserve and production growth through exploration and development activities.

43



For the three-year period ended December 31, 2013, we added 840.3 MMBoe of proved reserves through extensions and discoveries, compared to 84.5 MMBoe added through acquisitions.
Production, revenues and operating cash flows
For the year ended December 31, 2013, our crude oil and natural gas production totaled 49,610 MBoe (135,919 Boe per day), representing a 39% increase from production of 35,716 MBoe (97,583 Boe per day)totaling $139 million for the year, ended December 31, 2012. Crude oil represented 71%of our 2013 production compared to 70% for 2012.
Our crude oil and natural gas production totaled 13,271 MBoe (144,254 Boe per day) forwhich $28 million was recognized in the fourth quarter of 2013, a 2% increase over production of 13,052 MBoe (141,873 Boe per day) for the third quarter of 2013 and a 35% increase over production of 9,829 MBoe (106,831 Boe per day) for the fourth quarter of 2012. Crude oil represented 70%due to continued commodity price declines. The 2015 impairments were concentrated in non-core areas of our production for the fourth quarter of 2013, 71% for the third quarter of 2013,North and 72% for the fourth quarter of 2012.South regions.
The increase in 2013 production was primarily driven by higher production from our properties in the North Dakota Bakken fieldCapital expenditures and the SCOOP play due to the continued success of our drilling programs in those areas.activity
Our Bakken production in North Dakota increased to 27,977 MBoe (76,649 Boe per day) for the year ended December 31, 2013, a 50% increase over the comparable 2012 period. Fourth quarter 2013 production in North Dakota BakkenNon-acquisition capital expenditures totaled 7,394 MBoe (80,374 Boe per day), a 1% decrease from the third quarter of 2013 due to effects from adverse winter weather conditions and 36% higher than the fourth quarter of 2012.
Production in the emerging SCOOP play totaled 6,910 MBoe (18,932 Boe per day) for the year ended December 31, 2013, a 318% increase over the comparable 2012 period. SCOOP production totaled 2,185 MBoe (23,754 Boe per day) for the 2013 fourth quarter, an 18% increase over the third quarter of 2013 and a 233% increase over the fourth quarter of 2012.
Our crude oil and natural gas revenues for the year ended December 31, 2013 increased 52% to $3.61 billion due to a 39% increase in sales volumes and a 9% increase in realized commodity prices compared to the same period in 2012. Our realized price per Boe increased $5.88 to $72.71 per Boe for the year ended December 31, 2013 compared to 2012 due to higher commodity prices and improved crude oil differentials realized. Crude oil represented 87% of our total 2013 crude oil and natural gas revenues compared to 89% for 2012.
Crude oil and natural gas revenues totaled $912.3$394.0 million for the fourth quarter of 2013, a 36% increase over revenues of $670.42015 compared to $540.0 million for the 2012 fourththird quarter, due to a 36% increase in sales volumes, with realized prices being consistent between periods. Crude oil represented 85% of our total crude oil and natural gas revenues for the fourth quarter of 2013 compared to 88% for the 2012 fourth quarter.
Our cash flows from operating activities for the year ended December 31, 2013 were $2.56 billion, a 57% increase from $1.63 billion provided by our operating activities during the comparable 2012 period. For the fourth quarter of 2013, operating cash flows totaled $584.8 million, 21% higher than operating cash flows of $484.2$585.5 million for the 2012 fourthsecond quarter, and $983.8 million for the first quarter. The increased operating cash flows in 2013 were primarily due to higher crude oil and natural gas revenues resulting mainly from increased sales volumes, partially offset by an increase in cash losses on matured derivatives and higher production expenses, production taxes, general and administrative expenses, interest expense and other expenses associated with the growth of our operations over the past year.
Capital expenditures
OurFull year 2015 non-acquisition capital expenditures budget for 2013 was $3.60totaled approximately $2.50 billion, excluding acquisitions which are not budgeted. For the year ended December 31, 2013, we investedor approximately $3.57 billion in$200 million below our 2015 capital program (excluding $268.1 million of unbudgeted acquisitions and including $28.4 million of seismic costs and $89.5 million of capital costs associated with increased accruals for capital expenditures). Capital expenditures for the fourth quarter of 2013 totaled $867.5 million, excluding $71.2 million of unbudgeted acquisitions. Our 2013 capital program focused primarily on increased exploration and development in the Bakken field and SCOOP play.
Through leasing and acquisitions in 2013, we increased our Bakken acreage by 6% from 1,139,803 net acres at year-end 2012 to 1,209,821 net acres at year-end 2013 and increased our SCOOP acreage by 85% from 218,167 net acres at year-end 2012 to 403,854 net acres at year-end 2013.
Our capital expenditures budget for 2014 is $4.05 billion, excluding acquisitions. Our 2014 capital program is expected to continue focusing on exploratory and development drilling in the Bakken field and SCOOP play. We expect to continue participating as a buyer of properties if and when we have the ability to increase our position in strategic plays at competitive terms.budget.

4449



We economically hedgeFor the quarter and year to date periods of 2015 we participated in the drilling and completion of the following number of wells by area:
 1Q 2015 2Q 2015 3Q 2015 4Q 2015 YTD 2015
 Gross Net Gross Net Gross Net Gross Net Gross Net
North Dakota Bakken210
 62
 160
 56
 168
 35
 103
 22
 641
 175
Montana Bakken8
 6
 1
 
 
 
 
 
 9
 6
SCOOP74
 37
 55
 18
 37
 11
 38
��8
 204
 74
Northwest Cana
 
 5
 2
 5
 2
 4
 2
 14
 6
STACK
 
 1
 
 5
 1
 6
 3
 12
 4
Other12
 6
 4
 
 1
 
 
 
 17
 6
Total wells304
 111
 226
 76
 216
 49
 151
 35
 897
 271
As of December 31, 2015 we had approximately 170 gross (131 net) operated wells that are drilled but not yet completed. Due to current market conditions we have chosen to defer completions on certain wells until commodity prices improve.
Credit facility and liquidity
In February 2015, aggregate lender commitments on our revolving credit facility were increased from $1.75 billion to $2.5 billion and were increased again in November 2015 to $2.75 billion to provide additional liquidity. Further, in November 2015 we entered into a $500 million unsecured term loan maturing in November 2018 and used the proceeds therefrom to repay a portion of our anticipated future productionoutstanding credit facility borrowings to achieve more predictablefurther enhance our liquidity.
At December 31, 2015, we had $11.5 million of cash flows and reduce our exposure to fluctuations in commodity prices. Reducing our exposure to price volatility helps ensure adequate funds are available for our capital program. We expect our cash flows from operations, our remaining cash balance,equivalents and $1.9 billion of borrowing availability on our credit facility includingafter considering outstanding borrowings and letters of credit. We had $853 million of outstanding borrowings on our ability to increase our borrowing capacity thereunder, will be sufficient to meet our budgeted capital expenditure needs for the next 12 months; however, we may choose to access the capital markets for additional financing to take advantage of business opportunities that may arise if such financing can be arrangedcredit facility at favorable terms.December 31, 2015.
Credit facility releaseborrowings, net of collateral
In November 2013, following an upgrade by Standard & Poor’s Rating Services (“S&P”), as permitted by the credit facility terms, we provided the lenders under our credit facility notice of our intention to elect an Additional Covenant Period (as defined in the credit facility). The election of an Additional Covenant Period means that the credit facility is not currently subject to a borrowing base. The election was made in order to facilitate the release of collateral consisting of oilrepayments and gas properties securing obligations under the credit facility. On December 11, 2013, we delivered notice to the credit facility lenders confirming we had satisfied all conditions for releasing the collateral and the release of such collateral became effective as of December 12, 2013. On December 13, 2013 our credit rating was upgraded by Moody's Investor Services, Inc. (“Moody’s”). As a resultexclusive of the use of term loan proceeds, totaled $8 million for the 2015 fourth quarter compared to $120 million for the third quarter, $270 million for the second upgrade, we are not currently required to: (i) complyquarter, and $790 million for the first quarter. This decreasing trend resulted from a reduction in capital expenditures due to our efforts to align spending with certain reporting requirements; and (ii) maintain a ratio of the present value of oil and gas propertiescash flows in response to decreased commodity prices. Our total funded debt of not less than 1.5was nearly flat at December 31, 2015 compared to 1.0, as set forth in the credit facility.September 30, 2015.
Financial and operating highlights
We use a variety of financial and operating measures to evaluate our operations and assess our performance. Among these measures are:
Volumes of crude oil and natural gas produced,produced;
Crude oil and natural gas prices realized,realized;
Per unit operating and administrative costs,costs; and
EBITDAX (a non-GAAP financial measure).

50



The following table contains financial and operating highlights for the periods presented. Average sales prices exclude any effect of derivative transactions. Per-unit expenses have been calculated using sales volumes.
 Year ended December 31, Year ended December 31,
 2013 2012 2011 2015 2014 2013
Average daily production:            
Crude oil (Bbl per day) 95,859
 68,497
 45,121
 146,622
 121,999
 95,859
Natural gas (Mcf per day) 240,355
 174,521
 100,469
 450,558
 313,137
 240,355
Crude oil equivalents (Boe per day) 135,919
 97,583
 61,865
 221,715
 174,189
 135,919
Average sales prices: (1)            
Crude oil ($/Bbl) $89.93
 $84.59
 $88.51
 $40.50
 $81.26
 $89.93
Natural gas ($/Mcf) $5.25
 $4.20
 $5.24
 $2.31
 $5.40
 $4.87
Crude oil equivalents ($/Boe) $72.71
 $66.83
 $73.05
 $31.48
 $66.53
 $72.04
Production expenses ($/Boe) (1) $5.69
 $5.49
 $6.13
Crude oil sales price differential to NYMEX ($/Bbl) $(8.33) $(10.81) $(8.23)
Natural gas sales price premium (discount) to NYMEX ($/Mcf) $(0.34) $1.02
 $1.21
Production expenses ($/Boe) $4.30
 $5.58
 $5.69
Production taxes (% of oil and gas revenues) 8.2% 8.2% 7.9% 7.8% 8.2% 8.3%
DD&A ($/Boe) (1) $19.47
 $19.44
 $17.33
DD&A ($/Boe) $21.57
 $21.51
 $19.47
General and administrative expenses ($/Boe) (1) $2.91
 $3.42
 $3.23
 $1.70
 $2.06
 $2.11
Net income (in thousands) $764,219
 $739,385
 $429,072
Diluted net income per share $4.13
 $4.07
 $2.41
Non-cash equity compensation ($/Boe) $0.64
 $0.86
 $0.80
Net income (loss) (in thousands) $(353,668) $977,341
 $764,219
Diluted net income (loss) per share $(0.96) $2.64
 $2.07
EBITDAX (in thousands) (2) $2,839,510
 $1,963,123
 $1,303,959
 $1,978,896
 $3,776,051
 $2,839,510
(1)Average sales prices and per unit expenses have been calculated using sales volumes and exclude any effect of derivative transactions.Excludes non-cash equity compensation expense.
(2)
We define EBITDAX representsas earnings before interest expense, income taxes, depreciation, depletion, amortization and accretion, property impairments, exploration expenses, non-cash gains and losses resulting from the requirements of accounting for derivatives, and non-cash equity compensation expense.expense, and losses on extinguishment of debt. EBITDAX is not a measure of net income or operating cash flows as determined by U.S. GAAP. Reconciliations of net income and operating cash flows to EBITDAX are provided subsequently under the heading Non-GAAP Financial Measures.


4551



Results of Operations
The following table presents selected financial and operating information for each of the periods presented.
 Year Ended December 31, Year Ended December 31,
In thousands, except sales price data 2013 2012 2011 2015 2014 2013
Crude oil and natural gas sales $3,606,774
 $2,379,433
 $1,647,419
 $2,552,531
 $4,203,022
 $3,573,431
Gain (loss) on derivative instruments, net (1) (191,751) 154,016
 (30,049) 91,085
 559,759
 (191,751)
Crude oil and natural gas service operations 40,127
 39,071
 32,419
 36,551
 38,837
 40,127
Total revenues 3,455,150
 2,572,520
 1,649,789
 2,680,167
 4,801,618
 3,421,807
Operating costs and expenses (2) (2,009,383) (1,279,713) (889,037) (2,904,168) (2,933,782) (1,976,040)
Other expenses, net(2) (232,718) (137,611) (73,307) (311,084) (305,798) (232,718)
Income before income taxes 1,213,049
 1,155,196
 687,445
Provision for income taxes (448,830) (415,811) (258,373)
Net income $764,219
 $739,385
 $429,072
Income (loss) before income taxes (535,085) 1,562,038
 1,213,049
(Provision) benefit for income taxes 181,417
 (584,697) (448,830)
Net income (loss) $(353,668) $977,341
 $764,219
Production volumes:            
Crude oil (MBbl) (3) 34,989
 25,070
 16,469
Crude oil (MBbl) 53,517
 44,530
 34,989
Natural gas (MMcf) 87,730
 63,875
 36,671
 164,454
 114,295
 87,730
Crude oil equivalents (MBoe) 49,610
 35,716
 22,581
 80,926
 63,579
 49,610
Sales volumes:            
Crude oil (MBbl) (3) 34,985
 24,958
 16,439
Crude oil (MBbl) 53,664
 44,122
 34,985
Natural gas (MMcf) 87,730
 63,875
 36,671
 164,454
 114,295
 87,730
Crude oil equivalents (MBoe) 49,607
 35,604
 22,551
 81,073
 63,172
 49,607
Average sales prices: (4)            
Crude oil ($/Bbl) $89.93
 $84.59
 $88.51
 $40.50
 $81.26
 $89.93
Natural gas ($/Mcf) 5.25
 4.20
 5.24
 $2.31
 $5.40
 $4.87
Crude oil equivalents ($/Boe) 72.71
 66.83
 73.05
 $31.48
 $66.53
 $72.04
 
(1)Amounts include a non-cash mark-to-market loss onThe year 2014 includes $433 million of pre-tax gains recognized from crude oil derivative instrumentscontracts that were settled in the fourth quarter of $130.2 million for thethat year ended December 31, 2013 and non-cash mark-to-market gains on derivative instruments of $199.7 million and $4.1 million for the years ended December 31, 2012 and 2011, respectively.prior to their contractual maturities.
(2)
Amounts are netThe year 2014 includes a loss on extinguishment of gains on salesdebt of assets$24.5 million related to the July 2014 redemption of $0.1 million, $136.0 million, and $20.8 million for the years ended December 31, 2013, 2012 and 2011, respectively. See our 8.25% Senior Notes to Consolidated Financial Statements—Note 13. Property Acquisitions and Dispositions for further discussion of 2011 and 2012 dispositions.
(3)At various times we have stored crude oil due to pipeline line fill requirements, low commodity prices, or transportation constraints or we have sold crude oil from inventory. These actions result in differences between produced and sold crude oil volumes. Crude oil sales volumes were 4 MBbls less than crude oil production for the year ended December 31, 2013, 112 MBbls less than crude oil production for the year ended December 31, 2012 and 30 MBbls less than crude oil production for the year ended December 31, 2011.
(4)Average sales prices have been calculated using sales volumes and exclude any effect of derivative transactions.2019.
Year ended December 31, 20132015 compared to the year ended December 31, 20122014
Production
The following tables reflect our production by product and region for the periods presented.
 Year Ended December 31, Volume
increase
 Volume
percent
increase
 Year Ended December 31, Volume
increase
 Volume
percent
increase
 2013 2012  2015 2014 
 Volume Percent Volume Percent  Volume Percent Volume Percent 
Crude oil (MBbl) 34,989
 71% 25,070
 70% 9,919
 40% 53,517
 66% 44,530
 70% 8,987
 20%
Natural Gas (MMcf) 87,730
 29% 63,875
 30% 23,855
 37% 164,454
 34% 114,295
 30% 50,159
 44%
Total (MBoe) 49,610
 100% 35,716
 100% 13,894
 39% 80,926
 100% 63,579
 100% 17,347
 27%
 
  Year Ended December 31, Volume
increase
 Percent
increase
  2015 2014 
  MBoe Percent MBoe Percent 
North Region 54,956
 68% 47,206
 74% 7,750
 16%
South Region 25,970
 32% 16,373
 26% 9,597
 59%
Total 80,926
 100% 63,579
 100% 17,347
 27%

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  Year Ended December 31, Volume
increase
(decrease)
 Percent
increase
(decrease)
  2013 2012 
  MBoe Percent MBoe Percent 
North Region 38,023
 77% 27,207
 76% 10,816
 40%
South Region 11,587
 23% 8,110
 23% 3,477
 43%
East Region (1) 
 
 399
 1% (399) (100%)
Total 49,610
 100% 35,716
 100% 13,894
 39%
(1)
In December 2012, we sold the producingThe 20% increase in crude oil and natural gas properties in our East region and no new wells have been subsequently drilled in that region. Accordingly, no production is reflected for the East region for the year ended December 31, 2013.
Crude oil production volumesin 2015 compared to 2014 was driven by increased 9,919production from our properties in North Dakota Bakken and SCOOP. Production in North Dakota Bakken increased 6,623 MBbls, or 40%21%, forover the prior year, ended December 31, 2013 compared to the year ended December 31, 2012. Production increases in the Bakken field andwhile SCOOP play contributed incremental production volumes in 2013 of 10,661increased 3,545 MBbls, a 57% increase over production in these areas for the same period in 2012.or 97%. Production growth in these areas iswas primarily due to increasedadditional drilling and completion activity resulting from our drilling program. These increases were partially offset by a decrease of 418 MBbls associated with non-strategic properties in Wyoming and the East region that were sold in February 2012 and December 2012, respectively. Additionally, production from our properties in Montana Bakken and the Red River units and Northwest Cana play decreased a total of 308totaling 1,280 MBbls, or 5%14%, overcompared to the prior year due to a combination of natural declines in production and reduced drilling activityactivity.
The 44% increase in those areas.
Natural gas production volumes increased 23,855 MMcf, or 37%, for the year ended December 31, 2013 compared to the same period in 2012. Naturalnatural gas production in the Bakken field increased 11,299 MMcf, or 61%, for the year ended December 31, 20132015 compared to the same period in 2012 due to new wells being completed and gas2014 was driven by increased production from existing wells being connected to natural gas processing plants in the play. Natural gas productionour properties in the SCOOP, play increased 22,378 MMcf, or 317%,Bakken, and Northwest Cana/STACK areas due to additional wells being completed and producing subsequent to December 31, 2014. Natural gas production in 2013 compared to 2012.SCOOP increased 36,670 MMcf, or 67% over the prior year, while Bakken production increased 13,842 MMcf, or 37%, and Northwest Cana/STACK production increased 836 MMcf, or 8%. These increases were partially offset by decreases in production volumes totaling 9,554 MMcf, or 27%, from our properties in Northwest Cana, Arkoma Woodford, and non-corevarious areas in our North and South regionregions primarily due to a combination of natural declines in production and reduced drilling activity. Additionally,production.
The increase in natural gas production decreased 159 MMcf associated with non-strategicas a percentage of our total production from 30% in 2014 to 34% in 2015 primarily resulted from the significant increase in SCOOP production over the past year due in part to a shift in our well completion activities away from the Bakken to higher rate-of-return areas in Oklahoma. Our properties in WyomingSCOOP, as well as those in STACK and Northwest Cana, typically produce a higher concentration of liquids-rich natural gas compared to oil-weighted properties in the East region that were soldBakken. For 2016, we expect to continue shifting our well completion activities to Oklahoma and plan to allocate an increased proportion of our capital spending to the SCOOP, STACK, and Northwest Cana areas. Accordingly, we expect our natural gas production may increase to approximately 40% of our total production for 2016. As crude oil prices recover, we expect to increase our completion activities in February 2012the Bakken and December 2012, respectively.shift our production back to a higher proportion of crude oil.
Our reduction in capital spending and deferral of well completion activities in 2015, which is expected to intensify in 2016, has adversely impacted our production growth and our 27% year-over-year growth in production realized in 2015 will not be sustained in 2016. We expect our production will average approximately 200,000 Boe per day for the full year of 2016, a 10% decrease from average daily production of 221,715 Boe per day for 2015.
Revenues
Our total revenues primarily consist of sales of crude oil and natural gas and gains and losses resulting from changes in the fair value of our derivative instruments and revenues associated with crude oil and natural gas service operations.instruments.
Crude oil and natural gas sales. Crude oil and natural gas sales for the year ended December 31, 20132015 were $3.61$2.55 billion, a 52% increase39% decrease from sales of $2.38$4.20 billion for the same period in 2012. Our sales volumes increased 14,003 MBoe, or 39%, over 20122014 primarily due to the success of our drilling programsa significant decrease in the Bakken field and SCOOP play.commodity prices, partially offset by an increase in sales volumes.
Our realized price per Boe increased $5.88 to $72.71 per Boe for the year ended December 31, 2013 from $66.83 per Boe for the year ended December 31, 2012. This increase reflects higher crude oil and natural gassales prices realized in connection with improved marketaveraged $40.50 per barrel for 2015, a decrease of 50% compared to $81.26 for 2014. Market prices along with an improvement infor crude oil differentials.
remained depressed throughout 2015, resulting in significantly lower realized sales prices compared to the prior year. The differential between NYMEX West Texas Intermediate ("WTI") calendar month average crude oil prices and our realized crude oil priceprices averaged $8.33 per barrel for the year ended December 31, 2013 was $8.232015 compared to $9.06$10.81 for the year ended December 31, 2012.2014. The improved differential reflectswas due in part to increased availability and use of pipeline transportation in the current year to move our continued efforts to shift Bakken crude oil sales to coastal markets in the United Statesmarket with less dependence on currently available pipeline markets. We continuemore costly rail transportation.
Our realized natural gas sales prices averaged $2.31 per Mcf for 2015, a decrease of 57% compared to employ a portfolio approach (rail and pipe) in transporting$5.40 per Mcf for 2014 due to multiple U.S. coastal and inland markets and expect this trend to continue in 2014. Rail transportation costs are typically higher than pipeline transportation costs per barrel mile, butlower market prices for natural gas and natural gas liquids ("NGLs"). The majority of our natural gas production is sold at our lease locations to midstream purchasers with price realizations impacted by the volume and value of NGLs that the purchasers extract from our sales stream. The difference between our realized natural gas sales prices and NYMEX Henry Hub calendar month natural gas prices was a discount of $0.34 per Mcf for 2015 compared to a premium of $1.02 for 2014. NGL prices in U.S. coastal markets2015 remained depressed in conjunction with low crude oil prices, which reduced the value of our natural gas sales stream and unfavorably impacted the difference between our realized prices and Henry Hub benchmark pricing. If NGL prices do not recover from current levels, the prices we receive for the sale of our natural gas stream in 2016 may continue to be competitive with currently available pipeline markets. We planlower than Henry Hub benchmark prices.
Our sales volumes for 2015 increased 17,901 MBoe, or 28%, over 2014 primarily due to continue pursuing this portfolio approach to balance volumes deliveredan increase in producing wells resulting from the success of our drilling programs in North Dakota Bakken and SCOOP. At various times we have stored crude oil due to pipeline line fill requirements, low commodity prices, or marketing disruptions or we have sold crude oil from inventory. These actions result in differences between produced and rail market destinations in an effort to maximize net wellhead value.

Whilesold crude oil volumes. New third party pipeline systems becoming available during 2015 provided for improved transportation of our crude oil differentials in 2013 generally improved over levels experienced in 2012, they widened in recent months as Bakken productionto market, which resulted in the Williston basin continued to grow and seasonal refinery maintenance and outages resulted in a temporary reduction in demand for Bakken crude oil. As a result, our realized crude oil differential to WTI averaged $13.05 per barrel in the fourth quartersale of 2013 compared to $7.80 per barrel for the 2013 third quarter and $3.21 per barrel for the 2012 fourth quarter. The wide differentials realized in the 2013 fourth quarter are expected to continue into the first quarter of 2014. We expect crude oil differentials to ultimately improve from current levels but for volatility to continue.

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Derivatives. We have enteredcrude oil previously stored in inventory and caused crude oil sales volumes to be higher than crude oil production by 147 MBbls for the year.
For the 2015 fourth quarter, crude oil and natural gas revenues totaled $551.4 million, representing a 12% decrease from 2015 third quarter revenues of $628.5 million and a 39% decrease from 2014 fourth quarter revenues of $902.3 million. Revenues for the 2015 fourth quarter were adversely impacted by a decrease in crude oil and natural gas prices late in the year. Our crude oil sales prices averaged $34.23 per barrel in the 2015 fourth quarter compared to $38.95 for the 2015 third quarter and $61.53 for the 2014 fourth quarter. Our natural gas sales prices averaged $2.07 per Mcf in the 2015 fourth quarter compared to $2.23 for the 2015 third quarter and $4.36 for the 2014 fourth quarter.
The decrease in crude oil prices in late 2015 continued into a number of derivative contracts, including fixed price swaps and zero-cost collars, to reduce the uncertainty of future cash flows in order to underpin our capital expenditures and drilling program. We are required to recognize all derivative instruments on the balance sheet as either assets or liabilities measured at fair value. We have not designated our derivative instruments as hedges for accounting purposes.early 2016. As a result, we markexpect our derivative instruments to fair value and recognizerealized crude oil sales prices for the changes in fair value2016 first quarter will be lower than those realized in the consolidated statements2015 fourth quarter. Crude oil, natural gas and NGL prices have experienced significant volatility in recent months and we are unable to predict the impact future price changes may have on our full year 2016 revenues and differentials.
Crude oil represented 85% of income underour total crude oil and natural gas revenues for both 2015 and 2014. As previously mentioned, for 2016 we expect to allocate an increased proportion of our capital spending to our SCOOP, STACK, and Northwest Cana properties which typically contain higher concentrations of liquids-rich natural gas compared to our properties in the caption “Gain (loss) on derivative instruments, net”,Bakken. Accordingly, unless crude oil prices recover significantly, we expect crude oil to comprise a smaller percentage of our 2016 revenues compared to 2015, the extent of which is a componentuncertain due to the unpredictable nature of total revenues.commodity prices.
Derivatives.Changes in commoditynatural gas prices during 20132015 had an overall negativea favorable impact on the fair value of our derivatives, which resulted in negativepositive revenue adjustments of $191.8$91.1 million for the year. We expect ourOur revenues willmay continue to be significantly impacted, either positively or negatively, by changes in the fair value of our derivative instruments as a result of volatility in crude oil and natural gascommodity prices.
The following table presents the impact on total revenues related to cash settlements on matured or liquidated derivative instruments and non-cash gains and losses on open derivative instruments for the periods presented.Cash receipts and payments below reflect the gain or loss on derivative contracts which matured during the period, calculated as the difference between the contract price and the market settlement price of matured contracts. Non-cash gains and losses below represent the change in fair value of derivative instruments which continue to be held at period end and the reversal of previously recognized non-cash gains or losses on derivative contracts that matured during the period.
 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2015 2014
Cash received (paid) on derivatives:        
Crude oil derivatives (1) $
 $396,901
Natural gas derivatives 69,553
 (11,551)
Cash received on derivatives, net 69,553
 385,350
Non-cash gain on derivatives:    
Crude oil derivatives $(71,156) $(55,579) 4,715
 89,894
Natural gas derivatives 9,601
 9,858
 16,817
 84,515
Cash paid on derivatives, net (61,555) (45,721)
Non-cash gain (loss) on derivatives    
Crude oil derivatives (126,167) 202,478
Natural gas derivatives (4,029) (2,741)
Non-cash gain (loss) on derivatives, net (130,196) 199,737
Gain (loss) on derivative instruments, net $(191,751) $154,016
Non-cash gain on derivatives, net 21,532
 174,409
Gain on derivative instruments, net $91,085
 $559,759
The non-cash mark-to-market gains and losses reflected above for the year ended December 31, 2013 relate to derivative instruments with various terms that are scheduled to mature over the period from January 2014 to December 2015. Over this period, actual derivative settlements may differ significantly, either positively or negatively, from the mark-to-market valuation at December 31, 2013.
(1)Net cash receipts for crude oil derivatives in 2014 include $433 million of proceeds received from crude oil derivative contracts that were settled in the fourth quarter of 2014 prior to their contractual maturities.
Operating Costs and Expenses
Production expenses and production taxes and other expenses. Production expenses decreased 1% to $348.9 million in 2015 from $352.5 million in 2014. Production expenses on a per-Boe basis decreased to $4.30 for 2015 compared to $5.58 for 2014. These decreases primarily resulted from curtailed spending and reduced service costs being realized in response to depressed commodity prices, increased 44% to $282.2 million for the year ended December 31, 2013availability and use of water gathering and recycling facilities in 2015, and a higher portion of our production coming from $195.4 million for the year ended December 31, 2012. This increase is primarily the result of an increasenatural gas wells in the number of producing wells along with higherSCOOP area which typically have lower operating costs incurred in 2013 from severe weather conditions encountered in the North region which created a more challenging operating environment compared to a mild winter season experienced in 2012. Production expense per Boe increased to $5.69 for the year ended December 31, 2013 compared to $5.49 per Boe for the year ended December 31, 2012.Bakken.
Production taxes and other expenses. Production taxes and other expenses increased $103.7decreased $149.2 million, or 45%43%, to $332.1$200.6 million for the year ended December 31, 2013in 2015 compared to $228.4$349.8 million for the year ended December 31, 2012 as a result of higherin 2014 primarily due to lower crude oil and natural gas revenues resulting from increased sales volumes and higher realizedthe significant decrease in commodity prices. Production taxes and other expenses inprices over the consolidated statements of income include other charges for marketing, gathering, dehydration and compression fees primarily related to natural gas sales in the Oklahoma Woodford and North Dakota Bakken areas of $33.3 million and $29.9 million for the years ended December 31, 2013 and 2012, respectively. The increase in other charges is primarily due to higher natural gas sales volumes in 2013. Production taxes, excluding other charges, as a percentage of crude oil and natural gas revenues were 8.2% for both years ended December 31, 2013 and 2012.prior year. Production taxes are generally based on the wellhead values of production and vary by state. Some states offer exemptions or reducedProduction taxes as a percentage of crude oil and natural gas revenues were 7.8% for 2015 compared to 8.2% for 2014, the decrease of which resulted from significant growth over the past year in our SCOOP operations and resulting increase in revenues coming from Oklahoma, which has lower production tax rates for wells that produce less than a certain quantity of crude oil or natural gas andcompared to encourage certain activities, such as horizontal drilling and enhanced recovery projects. In Montana and Oklahoma, new horizontal wells qualify for a tax incentive and are taxed at a lower rate during their initial months of production. After the incentive period expires, theBakken. We expect this downward trend in our average production tax rate reverts to the statutory rate.continue in 2016 as our operations in Oklahoma continue to

4854



Ongrow in significance and given the passing of a unit of sales basis, production expenses and production taxes and other expenses were as follows:
  Year ended December 31,
$/Boe 2013 2012
Production expenses $5.69
 $5.49
Production taxes and other expenses 6.69
 6.42
Production expenses, production taxes and other expenses $12.38
 $11.91
Production expenses averaged $6.03 per Boe for the fourth quarter of 2013. The increase in the fourth quarter was due to higher costs incurred resulting from severe winter weather in the North region that created a challenging operating environment. The increased costs, coupled with delayed completions and reduced production from curtailed wellsnew law in North Dakota duringin 2015 that time, resulteddecreased the combined production tax rate in higher per-unit production expenses for the quarter.that state from 11.5% to 10.0% of crude oil revenues effective January 1, 2016.
Exploration expenses. Exploration expenses consist primarily of dry hole costs and exploratory geological and geophysical costs that are expensed as incurred. The following table shows the components of exploration expenses for the periods indicated.presented.
 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2015 2014
Exploratory geological and geophysical costs $25,597
 $22,740
Dry hole costs 9,350
 767
Geological and geophysical costs $11,032
 $26,388
Exploratory dry hole costs 8,381
 23,679
Exploration expenses $34,947
 $23,507
 $19,413
 $50,067
ExploratoryThe decrease in geological and geophysical costs increased $2.9 million for the year ended December 31, 2013expenses in 2015 was due to changes in the timing and amount of acquisitions of exploratory seismic datacosts incurred by the Company and recouped from joint interest owners between periods.
Dry hole costs increased $8.6 million for the year ended December 31, 2013 andincurred in 2015 primarily reflect costs associated with an unsuccessful well in an exploratory wellsprospect in the Arkoma Woodford area and a non-Woodford area of our SouthNorth region.
Depreciation, depletion, amortization and accretion (“DD&A”). Total DD&A increased $273.5$390.4 million, or 40%29%, for the year ended December 31, 2013in 2015 compared to the year ended December 31, 20122014 primarily due to a 39%28% increase in sales volumes. The following table shows the components of our DD&A on a unit of sales basis. 
 Year ended December 31, Year ended December 31,
$/Boe 2013 2012 2015 2014
Crude oil and natural gas properties $19.17
 $19.10
 $21.18
 $21.13
Other equipment 0.24
 0.25
 0.33
 0.32
Asset retirement obligation accretion 0.06
 0.09
 0.06
 0.06
Depreciation, depletion, amortization and accretion $19.47
 $19.44
 $21.57
 $21.51
Estimated proved reserves are a key component in our computation of DD&A expense. Holding all other factors constant, if proved reserves are revised downward, the rate at which we record DD&A expense would increase. Downward revisions of proved reserves in 2015 prompted by depressed commodity prices contributed to a slight increase in our DD&A rate for crude oil and natural gas properties averaged $20.08 per Boethis year. If commodity prices remain at current levels for an extended period or decline further, additional downward revisions of proved reserves may occur in the fourth quarter of 2013. Fourth quarterfuture, which may be significant and would result in an increase in our DD&A was impacted byrate. We are unable to predict the operational timing and amount of pad drilling and resulting mix of well completions duringfuture reserve revisions or the year.impact such revisions may have on our future DD&A rate.
Property impairments. PropertyTotal property impairments increaseddecreased $214.8 million, or 35%, to $402.1 million for 2015 compared to $616.9 million for 2014.
Impairments of proved properties decreased $185.4 million, or 57%, in 2015 to $138.9 million, of which $27.5 million was recognized in the year ended December 31, 2013 by $98.2fourth quarter. The decrease resulted from differences in the severity of commodity price declines and resulting impact on fair value assessments between periods. The sharp pronounced decrease in forward commodity prices in late 2014 triggered significant impairments of previously unimpaired proved properties, with subsequent commodity price changes and impairments in 2015 being less severe.
The 2015 proved property impairments reflect fair value adjustments primarily concentrated in an emerging area with minimal production and costly reserve additions ($42.5 million), the Medicine Pole Hills units ($32.5 million, including $9.6 million in the fourth quarter), the Buffalo Red River units ($26.3 million), non-Bakken areas of North Dakota and Montana ($8.2 million), Wyoming properties ($17.9 million, all in the fourth quarter), and various legacy areas in the South region ($11.4 million).
Estimated reserves are a key component in assessing proved properties for impairment. If commodity prices remain at current levels for an extended period or decline further, downward revisions of reserves may be significant in the future and could result in additional impairments of proved properties in 2016. We are unable to $220.5 million compared to $122.3 million forpredict the year ended December 31, 2012.timing and amount of future reserve revisions or the impact such revisions may have on future impairments, if any.
Non-producing properties consist of undeveloped leasehold costs and costs associated with the purchase of certain proved undeveloped reserves. Individually insignificant non-producing properties are amortized on an aggregate basis based on our estimated experience of successful drilling and the average holding period. Individually significant non-producing properties, if any, are assessed for impairment on a property-by-property basis. Impairments of non-producing properties increased $50.8decreased $29.3 million, foror 10%, in 2015 to $263.3 million, of which $53.5 million was recognized in the year ended December 31, 2013fourth quarter. The decrease was due to $168.7 million compared to $117.9 million for the year ended December 31, 2012. The increase primarily resulted from a larger baselower balance of amortizableunamortized leasehold costs in the current year coupledalong with higher rateschanges in the timing and magnitude of amortization of undeveloped leasehold costs between periods resulting

55



from changes in management’sthe Company's estimates of undeveloped properties not expected to be developed before lease expiration. Additionally,In 2014, the amortization of undeveloped leasehold costs on certain propertiesfor an exploratory prospect in the Niobrara play were individually assessed for impairmentTexas was accelerated in the 2013 fourth quarter based on indicators of impairmentresponse to unsuccessful results and were written down to fair value,decreased crude oil prices, which resulted in the recognition of $92.4 million of non-producing leasehold impairment charges being recognized of $8.4 million.
Impairment provisions for proved properties were $51.8 million for the year ended December 31, 2013 comparedprospect in 2014, with no leasehold impairments of a similar magnitude in 2015. This decrease was partially offset by higher rates of amortization being applied in 2015 to $4.3 million forundeveloped leasehold costs across various prospects resulting from a reduction in planned drilling activities prompted by the same periodcontinued decrease in 2012. We evaluate proved crude oilcommodity prices in 2015. Our rates of amortization may increase in future periods if commodity prices remain at current levels or decline further and natural gas properties for impairment by comparing their cost basisadditional changes are made to the estimated future cash flows on a field basis. If the cost basis is in excess of estimated future cash flows, then

49



we impair it based on an estimate of fair value based on discounted cash flows. Impairments of proved properties in 2013 primarily reflect fair value adjustments made for certain properties in the Niobrara play in Colorado and Wyoming driven by uneconomic well results. Impairment provisions for proved properties in 2012 reflect uneconomic operating results in a non-Woodford single-well field in our South region.drilling plans.
General and administrative expenses. GeneralTotal general and administrative (“G&A”) expenses increased $22.7$5.1 million, or 3%, to $144.4$189.8 million for the year ended December 31, 2013in 2015 from $121.7$184.7 million for the comparable period in 2012.2014. G&A expenses include non-cash charges for equity compensation of $39.9$51.8 million and $29.1$54.4 million for the years ended December 31, 20132015 and 2012,2014, respectively. The increase in equity compensation in 2013 resulted from a higher value of restricted stock grants being made throughout 2012 and 2013 due to employee growth, which resulted in increased expense recognition in 2013 compared to the prior year.
The previously announced relocation of our corporate headquarters from Enid, Oklahoma to Oklahoma City, Oklahoma was completed during 2012; however, residual costs continued to be incurred into 2013 under the terms of our relocation plan offered to employees. For the year ended December 31, 2013, we recognized approximately $1.6 million of costs in G&A expenses associated with our relocation compared to $7.8 million in 2012. Cumulative relocation costs recognized through December 31, 2013 totaled approximately $12.6 million.
G&A expenses other than equity compensation and relocation expenses increased $18.1 million, or 21%, in 2013 compared to 2012. The increase was primarily due to an increase in personnel costs and office-related expenses associated with our rapid growth. Over the past year, our Company has grown from having 753 total employees in December 2012 to 929 total employees in December 2013, a 23% increase.
The following table shows the components of G&A expenses on a unit of sales basis for the periods presented.
   Year ended December 31,
$/Boe 2015 2014
General and administrative expenses $1.70
 $2.06
Non-cash equity compensation 0.64
 0.86
Total general and administrative expenses $2.34
 $2.92
The decrease in G&A expenses on a per-Boe basis in 20132015 was driven by a 28% increase in sales volumes from new well completions with no comparable increase in G&A expenses. Per-Boe G&A expenses may continue to trend downward in 2016 as a result of our ongoing efforts to reduce spending in response to depressed commodity prices.
The decrease in non-cash equity compensation expense on a per-Boe basis was due to the rapid growth in our crude oil and natural gas sales volumes coupled with an increase in G&A overhead costs billed to and recoupedthe estimated rate of forfeitures of unvested restricted stock based on historical experience, which resulted in lower recognition of expense in 2015, coupled with the increase in sales volumes from our joint interest partners over the prior year, which helped generate lower costs realized per Boe.
   Year ended December 31,
$/Boe 2013 2012
General and administrative expenses $2.07
 $2.38
Non-cash equity compensation 0.80
 0.82
Corporate relocation expenses 0.04
 0.22
Total general and administrative expenses $2.91
 $3.42
new well completions with no comparable increase in equity compensation expense.
Interest expense. Interest expense increased $94.6$29.2 million, or 10%, to $235.3$313.1 million in 2015 from $283.9 million in 2014 due to an increase in our weighted average outstanding long-term debt obligations. Our weighted average outstanding long-term debt balance for 2015 was $6.9 billion with a weighted average interest rate of 4.4% compared to averages of $5.6 billion and 4.9% for 2014. The increase in outstanding debt resulted from borrowings incurred subsequent to December 31, 2014 to fund our 2015 capital program.
Income Taxes. We recorded an income tax benefit for the year ended December 31, 2015 of $181.4 million compared to income tax expense of $584.7 million for 2014, resulting in effective tax rates of approximately 34% and 37%, respectively, after taking into account permanent taxable differences and valuation allowances. For 2015, we provided for income taxes at a combined federal and state tax rate of 38% of pre-tax losses generated by our operations in the United States. Our 2015 effective tax rate was impacted by a $13.5 million valuation allowance recognized against deferred tax assets associated with operating loss carryforwards generated by our Canadian subsidiary during the year for which we do not believe we will realize a benefit.
Year ended December 31, 2014 compared to the year ended December 31, 2013
Production
The following tables reflect our production by product and region for the periods presented.
  Year Ended December 31, Volume
increase
 Volume
percent
increase
  2014 2013 
  Volume Percent Volume Percent 
Crude oil (MBbl) 44,530
 70% 34,989
 71% 9,541
 27%
Natural Gas (MMcf) 114,295
 30% 87,730
 29% 26,565
 30%
Total (MBoe) 63,579
 100% 49,610
 100% 13,969
 28%

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  Year Ended December 31, Volume
increase
 Percent
increase
  2014 2013 
  MBoe Percent MBoe Percent 
North Region 47,206
 74% 38,023
 77% 9,183
 24%
South Region 16,373
 26% 11,587
 23% 4,786
 41%
Total 63,579
 100% 49,610
 100% 13,969
 28%
Crude oil production increased 9,541 MBbls, or 27%, in 2014 compared to 2013. Production in the Bakken field increased 8,371 MBbls, or 31%, over the prior year, while SCOOP production increased 1,648 MBbls, or 82%. Production growth in these areas was primarily due to increased drilling and completion activity resulting from our drilling program. These increases were partially offset by a decrease of 132 MBbls associated with non-strategic properties in Colorado and Wyoming that were sold in March 2014. Additionally, production from our properties in the Red River units decreased 336 MBbls, or 7%, over the prior year due to a combination of natural declines in production and reduced drilling activity.
Natural gas production increased 26,565 MMcf, or 30%, in 2014 compared to 2013. Production in the Bakken field increased 7,728 MMcf, or 26%, in 2014 due to new wells being completed and gas from existing wells being connected to natural gas processing plants in the play. Natural gas production in SCOOP increased 25,579 MMcf, or 87%, due to additional wells being completed and producing in 2014 compared to 2013. These increases were partially offset by decreases in production from various areas in our North and South regions, primarily in Arkoma Woodford and Northwest Cana, due to natural declines in production.
Revenues
2013Crude oil and natural gas sales. Crude oil and natural gas sales for 2014 were $4.20 billion, an 18% increase from $140.7sales of $3.57 billion for 2013. Our sales volumes increased 13,565 MBoe, or 27%, over 2013 primarily due to the success of our drilling programs in the Bakken and SCOOP plays. Realized commodity prices decreased 8% in 2014 resulting from the significant decrease in crude oil prices in the 2014 fourth quarter along with a widening of sales price differentials.
Crude oil represented 85% of our total 2014 crude oil and natural gas revenues compared to 88% for 2013. The decreased percentage of crude oil revenues resulted from a significant increase in SCOOP revenues as a percentage of our total revenues in 2014. Our properties in SCOOP produce a higher concentration of liquids-rich natural gas compared to certain other operating areas such as the Bakken.
An increase in crude oil line fill requirements associated with new pipelines put into service during 2014 along with initial tank fill at new storage facilities contributed to an increase in crude oil stored in inventory in 2014. This caused crude oil sales volumes to be lower than crude oil production by 408 MBbls for 2014, with 143 MBbls of the difference occurring during the fourth quarter.
Crude oil and natural gas revenues totaled $902.3 million for the comparable periodfourth quarter of 2014, representing a 22% decrease from 2014 third quarter revenues of $1.16 billion and nearly flat compared to 2013 fourth quarter revenues of $903.2 million. Revenues for the 2014 fourth quarter were adversely impacted by increased crude oil inventory levels and decreased crude oil prices. Our crude oil sales prices averaged $61.53 per barrel in 2012the 2014 fourth quarter compared to $85.49 for the 2014 third quarter and $84.47 for the 2013 fourth quarter.
The differential between NYMEX West Texas Intermediate ("WTI") calendar month crude oil prices and our realized crude oil prices averaged $10.81 per barrel for 2014 compared to $8.23 for 2013. Our crude oil price differential to WTI averaged $11.35 per barrel in the 2014 fourth quarter compared to $11.77 for the 2014 third quarter and $13.05 for the 2013 fourth quarter.
Our realized natural gas sales prices averaged $5.40 per Mcf for 2014, an increase of 11% over $4.87 per Mcf for 2013. This increase primarily reflected improved prices realized in connection with higher market prices for natural gas during 2014. Our average natural gas sales price for the 2014 fourth quarter decreased to $4.36 per Mcf compared to $5.10 for the 2014 third quarter and $5.11 for the 2013 fourth quarter. This decrease was driven by lower sales prices for natural gas liquids in late 2014, which reduced the total value of our natural gas sales stream. NGL prices decreased significantly in late 2014 in conjunction with the decrease in crude oil prices.
The premium of our realized natural gas sales prices over NYMEX Henry Hub calendar month natural gas prices averaged $1.02 per Mcf for 2014 compared to $1.21 per Mcf for 2013. The smaller premium in 2014 was partly driven by the aforementioned decrease in NGL market prices in late 2014, which unfavorably impacted the premium of our realized prices over Henry Hub benchmark pricing. Because of significantly lower NGL prices in late 2014, our natural gas sales price

57



premium decreased to $0.35 per Mcf for the 2014 fourth quarter compared to $1.04 for the 2014 third quarter and $1.51 for the 2013 fourth quarter.
Derivatives. Changes in commodity prices during 2014 had an overall favorable impact on the fair value of our derivatives, which resulted in positive revenue adjustments of $560 million for 2014, including $433 million of gains recognized on crude oil derivative liquidations in the 2014 fourth quarter. 
The following table presents cash settlements on matured or liquidated derivative instruments and non-cash gains and losses on open derivative instruments for the periods presented.
  Year ended December 31,
In thousands 2014 2013
Cash received (paid) on derivatives:    
Crude oil derivatives (1) $396,901
 $(71,156)
Natural gas derivatives (11,551) 9,601
Cash received (paid) on derivatives, net 385,350
 (61,555)
Non-cash gain (loss) on derivatives:    
Crude oil derivatives 89,894
 (126,167)
Natural gas derivatives 84,515
 (4,029)
Non-cash gain (loss) on derivatives, net 174,409
 (130,196)
Gain (loss) on derivative instruments, net $559,759
 $(191,751)
(1)Net cash receipts for crude oil derivatives in 2014 include $433 million of proceeds received from crude oil derivative contracts that were settled in the fourth quarter of 2014 prior to their contractual maturities.
Operating Costs and Expenses
Production expenses. Production expenses increased 25% to $352.5 million in 2014 from $282.2 million in 2013. This increase was primarily the result of an increase in the number of producing wells and resulting 28% increase in production volumes. Production expense per Boe decreased to $5.58 for 2014 compared to $5.69 for 2013.
Production taxes and other expenses. Production taxes and other expenses increased $51.0 million, or 17%, to $349.8 million in 2014 compared to $298.8 million in 2013 primarily as a result of higher crude oil and natural gas revenues driven by increased sales volumes. Production taxes as a percentage of crude oil and natural gas revenues were 8.2% for 2014 compared to 8.3% for 2013.
Exploration expenses. The following table shows the components of exploration expenses for the periods presented.
  Year ended December 31,
In thousands 2014 2013
Geological and geophysical costs $26,388
 $25,597
Exploratory dry hole costs 23,679
 9,350
Exploration expenses $50,067
 $34,947
Dry hole costs increased $14.3 million resulting from an increase in the scope of our exploratory drilling program in 2014 and primarily reflect costs associated with exploratory wells targeting non-Bakken formations in North Dakota and Montana and non-core areas in Oklahoma, Texas and Wyoming.
Depreciation, depletion, amortization and accretion. Total DD&A increased $393.0 million, or 41%, in 2014 compared to 2013 primarily due to a 27% increase in sales volumes. The following table shows the components of our DD&A on a unit of sales basis.
  Year ended December 31,
$/Boe 2014 2013
Crude oil and natural gas properties $21.13
 $19.17
Other equipment 0.32
 0.24
Asset retirement obligation accretion 0.06
 0.06
Depreciation, depletion, amortization and accretion $21.51
 $19.47

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The increase in DD&A per Boe in 2014 resulted from an increased use of enhanced completion methods that increased completed well costs. Additionally, certain exploratory wells, primarily in non-core areas, resulted in more expensive reserve additions. These factors contributed to an increase in DD&A on a per-Boe basis in 2014 compared to 2013.
Property impairments. Total property impairments increased $396.4 million, or 180%, to $616.9 million for 2014 compared to $220.5 million for 2013 due primarily to write-downs resulting from the significant decrease in crude oil prices in the 2014 fourth quarter which adversely impacted the recoverability of capitalized costs in certain operating areas.
Impairment provisions for proved properties increased $272.5 million, or 526%, in 2014 to $324.3 million, of which $255.0 million was recognized in the fourth quarter. The 2014 impairments were primarily concentrated in the Buffalo Red River units ($96.9 million), the Medicine Pole Hills units ($75.9 million), various non-core areas in our South region ($39.7 million), non-Bakken areas of North Dakota and Montana ($18.4 million), and certain emerging areas with limited production history and costly reserve additions ($75.2 million). Impairments for 2014 also include an $18.2 million lower of cost or market adjustment for crude oil inventories.
Impairments of non-producing properties increased $123.9 million, or 73%, in 2014 to $292.6 million, of which $138.8 million was recognized in the fourth quarter. The increase was due to higher rates of amortization being applied to undeveloped leasehold costs resulting from changes in management’s estimates of undeveloped properties not expected to be developed before lease expiration, particularly in the fourth quarter in response to the significant decrease in crude oil prices which altered our drilling plans. Undeveloped leasehold costs for a prospect in Texas in the early stages of exploration and development were written down in 2014 due to changes in drilling plans in response to unsuccessful results and lower crude oil prices, which resulted in the recognition of $92.4 million of non-producing leasehold impairment charges for the prospect, of which $84.6 million was recognized in the fourth quarter.
General and administrative expenses. G&A expenses increased $40.3 million, or 28%, to $184.7 million in 2014 from $144.4 million in 2013. G&A expenses include non-cash charges for equity compensation of $54.4 million and $39.9 million for 2014 and 2013, respectively. The increase in equity compensation resulted from a higher value of restricted stock grants being made in 2014 due to employee growth, which resulted in increased expense recognition compared to the prior year.
G&A expenses other than equity compensation increased $25.8 million, or 25%, in 2014 compared to 2013. The increase was primarily due to an increase in personnel costs and office-related expenses associated with our employee growth. In 2014, our Company grew from having 929 total employees in December 2013 to 1,188 total employees in December 2014, a 28% increase.
The following table shows the components of G&A expenses on a unit of sales basis for the periods presented.
   Year ended December 31,
$/Boe 2014 2013
General and administrative expenses $2.06
 $2.07
Non-cash equity compensation 0.86
 0.80
Corporate relocation expenses 
 0.04
Total general and administrative expenses $2.92
 $2.91
Interest expense. Interest expense increased $48.6 million, or 21%, to $283.9 million in 2014 from $235.3 million in 2013 due to an increase in our weighted average outstanding long-term debt obligations. Our weighted average outstanding long-term debt balance for the year ended December 31, 20132014 was approximately $4.3$5.6 billion with a weighted average interest rate of 5.2%4.9% compared to a weighted average outstanding long-term debt balanceaverages of approximately $2.3$4.3 billion and a weighted average interest rate of 5.6%5.2% for the comparable period in 2012.2013. The increase in outstanding debt resulted from the issuances of 5% Senior Notes due 2022 in 2012 and 4 1/2% Senior Notes due 2023 in 2013, the net proceeds of which were used to repay credit facilityhigher borrowings being incurred to fund a portion of our increased capital budgets and for general corporate purposes.
Our weighted average outstanding credit facility balance decreased to $281.9 million for the year ended December 31, 2013 compared to $322.1 million for the year ended December 31, 2012. The weighted average interest rate on our credit facility borrowings was 2.0% for the year ended December 31, 2013 compared to 2.3% for the same period in 2012. At December 31, 2013, we had $275 million of outstanding borrowings on our credit facility compared to $595 million outstanding at December 31, 2012.budget.
Income Taxes. We recorded income tax expense of $584.7 million for the year ended December 31, 2013 of2014 compared to $448.8 million compared to $415.8 million for the year ended December 31, 2012, resulting in effective2013. We provided for income taxes at a combined federal and state tax ratesrate of approximately 37% for both 2014 and 36% for 2013 and 2012, respectively, after taking into account permanent taxable differences.

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Year ended December 31, 2012 compared to the year ended December 31, 2011
Production
The following tables reflect our production by product and region for the periods presented.
  Year Ended December 31, 
Volume
increase
 
Volume
percent
increase
  2012 2011 
  Volume Percent Volume Percent 
Crude oil (MBbl) 25,070
 70% 16,469
 73% 8,601
 52%
Natural Gas (MMcf) 63,875
 30% 36,671
 27% 27,204
 74%
Total (MBoe) 35,716
 100% 22,581
 100% 13,135
 58%
  Year Ended December 31, 
Volume
increase
(decrease)
 
Percent
increase
(decrease)
  2012 2011 
  MBoe Percent MBoe Percent 
North Region 27,207
 76% 17,462
 77% 9,745
 56%
South Region 8,110
 23% 4,705
 21% 3,405
 72%
East Region (1) 399
 1% 414
 2% (15) (4%)
Total 35,716
 100% 22,581
 100% 13,135
 58%
(1)
In December 2012, we sold the producing crude oil and natural gas properties in our East region to a third party for $126.4 million. See Notes to Consolidated Financial Statements—Note 13. Property Acquisitions and Dispositions for further discussion of the transaction.
Crude oil production volumes increased 52% during the year ended December 31, 2012 compared to the year ended December 31, 2011. Production increases in the Bakken field, the Northwest Cana play and SCOOP play contributed incremental production volumes in 2012 of 8,493 MBbls, an 81% increase over production in these areas for the same period in 2011. Production growth in these areas was primarily due to increased drilling and completion activity resulting from our drilling program. Additionally, production in the Red River units increased 177 MBbls, or 4%, in 2012 due to new wells being completed and enhanced recovery techniques being successfully applied.
Natural gas production volumes increased 27,204 MMcf, or 74%, during the year ended December 31, 2012 compared to the same period in 2011. Natural gas production in the Bakken field increased 9,414 MMcf, or 104%, for the year ended December 31, 2012 compared to the same period in 2011 due to new wells being completed and gas from existing wells being connected to natural gas processing plants in the play. Natural gas production in the Northwest Cana and SCOOP plays in Oklahoma increased 17,839 MMcf, or 156%, due to additional wells being completed and producing in the year ended December 31, 2012 compared to the same period in 2011. Further, natural gas production increased 716 MMcf, or 81%, in non-Bakken areas in the North region compared to 2011 due to the completion of new wells during the period. These increases were partially offset by a decrease in production volumes of 837 MMcf, or 6%, from non-core areas in our South region due to a combination of natural declines in production and reduced drilling activity prompted by the pricing environment for natural gas in those areas.
Revenues
Crude oil and natural gas sales. Crude oil and natural gas sales for the year ended December 31, 2012 were $2.38 billion, a 44% increase from sales of $1.65 billion for the same period in 2011. Our sales volumes increased 13,053 MBoe, or 58%, over 2011 due to the success of our drilling programs in the North Dakota Bakken field and Northwest Cana play, along with early success achieved in the emerging SCOOP play in Oklahoma. Our realized price per Boe decreased $6.22 to $66.83 for the year ended December 31, 2012 from $73.05 for the year ended December 31, 2011 due to lower commodity prices and higher crude oil differentials realized.
The differential between NYMEX WTI calendar month average crude oil prices and our realized crude oil price per barrel for the year ended December 31, 2012 was $9.06 compared to $6.39 for the year ended December 31, 2011. Overall increased production and constrained logistical factors had a negative effect on our realized crude oil prices during 2012 and resulted in higher differentials compared to 2011. Factors contributing to the changing differential included a continued increase in crude oil production across the Williston Basin from the Bakken play as well as increased production and imports from Canada.

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Additionally, pipeline transportation capacity remained constrained in the Williston Basin throughout 2012 and it was not until the latter part of the year that improved rail transportation takeaway capacity began to have a positive effect on differentials. Positive effects of stronger sales pricing in coastal U.S. markets began to be realized in the fourth quarter of 2012 despite high costs being incurred for rail transportation. As a result, our crude oil differentials to NYMEX improved late in the year and averaged $3.21 per barrel for the 2012 fourth quarter.
Derivatives. Changes in commodity prices during 2012 had an overall positive net impact on the fair value of our derivatives, which resulted in net positive revenue adjustments of $154.0 million for the year. Revenues will continue to be significantly impacted, either positively or negatively, by changes in the fair value of our derivative instruments as a result of volatility in crude oil and natural gas prices. The following table presents the impact on total revenues related to cash settlements on matured derivative instruments and non-cash gains and losses on open derivative instruments for the periods presented.
  Year ended December 31,
In thousands 2012 2011
Cash received (paid) on derivatives:    
Crude oil derivatives $(55,579) $(71,411)
Natural gas derivatives 9,858
 37,305
Cash paid on derivatives, net (45,721) (34,106)
Non-cash gain (loss) on derivatives    
Crude oil derivatives 202,478
 18,753
Natural gas derivatives (2,741) (14,696)
Non-cash gain on derivatives, net 199,737
 4,057
Gain (loss) on derivative instruments, net $154,016
 $(30,049)
Operating Costs and Expenses
Production expenses and production taxes and other expenses. Production expenses increased 41% to $195.4 million for the year ended December 31, 2012 from $138.2 million for the year ended December 31, 2011. This increase was primarily the result of an increase in the number of producing wells. Production expense per Boe decreased to $5.49 for the year ended December 31, 2012 compared to $6.13 per Boe for the year ended December 31, 2011. This decrease was due in part to higher costs being incurred in the prior year resulting from the abnormal rainfall and flooding in North Dakota during the 2011 second quarter. The increased 2011 costs, coupled with reduced production from curtailed and shut-in wells in North Dakota during that time, resulted in higher per-unit production expenses in 2011 compared to 2012.
Production taxes and other expenses increased $83.6 million, or 58%, to $228.4 million for the year ended December 31, 2012 compared to the year ended December 31, 2011 as a result of higher crude oil and natural gas revenues resulting primarily from increased sales volumes. Production taxes and other expenses in the consolidated statements of income include other charges for marketing, gathering, dehydration and compression fees primarily related to natural gas sales in the Oklahoma Woodford and North Dakota Bakken areas of $29.9 million and $13.7 million for the years ended December 31, 2012 and 2011, respectively. The increase in other charges is primarily due to the significant increase in natural gas sales volumes in 2012. Production taxes, excluding other charges, as a percentage of crude oil and natural gas revenues were 8.2% for the year ended December 31, 2012 compared to 7.9% for the year ended December 31, 2011. The increase was due to higher taxable revenues coming from North Dakota, our most active area, which has production tax rates of up to 11.5% of crude oil revenues.
On a unit of sales basis, production expenses and production taxes and other expenses were as follows:
  Year Ended December 31,
$/Boe 2012 2011
Production expenses $5.49
 $6.13
Production taxes and other expenses 6.42
 6.42
Production expenses, production taxes and other expenses $11.91
 $12.55

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Exploration expenses. The following table shows the components of exploration expenses for the periods indicated.
  Year Ended December 31,
In thousands 2012 2011
Exploratory geological and geophysical costs $22,740
 $19,971
Dry hole costs 767
 7,949
Exploration expenses $23,507
 $27,920
Exploratory geological and geophysical costs increased $2.8 million for the year ended December 31, 2012 due to an increase in acquisitions of seismic data in connection with our increased capital budget for 2012. No significant dry holes were drilled during 2012. Dry hole costs recognized in 2011 were primarily concentrated in Arkoma Woodford and Michigan.
Depreciation, depletion, amortization and accretion. Total DD&A increased $301.2 million, or 77%, for the year ended December 31, 2012 compared to the year ended December 31, 2011 primarily due to a 58% increase in sales volumes. The following table shows the components of our DD&A on a unit of sales basis.
  Year Ended December 31,
$/Boe 2012 2011
Crude oil and natural gas properties $19.10
 $16.90
Other equipment 0.25
 0.29
Asset retirement obligation accretion 0.09
 0.14
Depreciation, depletion, amortization and accretion $19.44
 $17.33
The increase in DD&A per Boe was partially the result of a gradual shift in our production base from our historic base of the Red River units in the Cedar Hills field to newer production bases in the Bakken and Oklahoma Woodford plays. The producing properties in our newer areas typically carry higher DD&A rates due to the higher cost of developing reserves in those areas compared to our older, more mature properties.
Property impairments. Property impairments increased in the year ended December 31, 2012 by $13.8 million to $122.3 million compared to $108.5 million for the year ended December 31, 2011.
Impairments of non-producing properties increased $25.5 million for the year ended December 31, 2012 to $117.9 million compared to $92.4 million for the year ended December 31, 2011. The increase resulted from a larger base of amortizable costs in 2012 coupled with changes in management’s estimates of the undeveloped properties not expected to be developed before lease expiration.
Impairment provisions for proved properties were $4.3 million for the year ended December 31, 2012 compared to $16.1 million for the same period in 2011. Impairments of proved properties in 2012 primarily reflected uneconomic operating results in a non-Woodford single-well field in our South region. Impairment provisions for proved properties in 2011 reflected uneconomic operating results for initial wells drilled on our acreage in the Niobrara play in Colorado.
General and administrative expenses. G&A expenses increased $48.9 million to $121.7 million for the year ended December 31, 2012 from $72.8 million for the comparable period in 2011. G&A expenses include non-cash charges for equity compensation of $29.1 million and $16.6 million for the years ended December 31, 2012 and 2011, respectively. The increase in equity compensation in 2012 resulted from a higher value of restricted stock grants due to employee growth and new executive management personnel, which resulted in increased expense recognition in 2012 compared to 2011. G&A expenses other than equity compensation increased $36.4 million for the year ended December 31, 2012 compared to the same period in 2011. The increase was due in part to an increase in personnel costs and office-related expenses associated with our rapid growth. In 2012, our Company grew from having 609 total employees in December 2011 to 753 total employees in December 2012, a 24% increase. Additionally, in March 2011 we announced plans to relocate our corporate headquarters from Enid, Oklahoma to Oklahoma City, Oklahoma. Our relocation was completed during 2012. For the year ended December 31, 2012, we recognized approximately $7.8 million of costs in G&A expenses associated with the relocation compared to $3.2 million in 2011. Cumulative relocation costs recognized through December 31, 2012 totaled approximately $11.0 million.

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The following table shows the components of G&A expenses on a unit of sales basis for the periods presented.
  
 Year Ended December 31,
$/Boe 2012 2011
General and administrative expenses $2.38
 $2.36
Non-cash equity compensation 0.82
 0.73
Corporate relocation expenses 0.22
 0.14
Total general and administrative expenses $3.42
 $3.23
Interest Expense. Interest expense increased $64.0 million to $140.7 million for the year ended December 31, 2012 from $76.7 million for the comparable period in 2011 due to an increase in our weighted average outstanding long-term debt obligations. Our weighted average outstanding long-term debt balance for the year ended December 31, 2012 was approximately $2.3 billion with a weighted average interest rate of 5.6% compared to a weighted average outstanding long-term debt balance of approximately $970.0 million and a weighted average interest rate of 7.2% for the comparable period in 2011. The increase in outstanding debt resulted from borrowings incurred to fund increased amounts of capital expenditures and property acquisitions in 2012 compared to 2011. On March 8, 2012 and August 16, 2012, we issued $800 million and $1.2 billion, respectively, of 5% Senior Notes due 2022 and used the net proceeds from those issuances to repay credit facility borrowings, to fund a portion of our 2012 capital budget and for general corporate purposes.
Our weighted average outstanding credit facility balance increased to $322.1 million for the year ended December 31, 2012 compared to $70.0 million for the year ended December 31, 2011. The weighted average interest rate on our credit facility borrowings was 2.3% for the year ended December 31, 2012 compared to 2.4% for the same period in 2011. At December 31, 2012, we had $595 million of outstanding borrowings on our credit facility compared to $358.0 million outstanding at December 31, 2011. The increase in credit facility borrowings in 2012 was driven by the aforementioned increase in capital expenditures and property acquisitions during the year.
Income Taxes. We recorded income tax expense for the year ended December 31, 2012 of $415.8 million compared to $258.4 million for the year ended December 31, 2011, resulting in effective tax rates of approximately 36% and 38% for 2012 and 2011, respectively, after taking into account permanent taxable differences.
Liquidity and Capital Resources
Our primary sources of liquidity have historically been cash flows generated from operating activities, financing provided by our revolving credit facility and the issuance of debt and equity securities. At December 31, 2013,2015, we had $28.5$11.5 million of cash and cash equivalents and $1.2approximately $1.9 billion of borrowing availability on our revolving credit facility after considering outstanding borrowings and letters of credit. We had $275 million ofare focused on balancing our 2016 capital spending with cash flows in order to

59



minimize new borrowings and maintain ample liquidity. At February 19, 2016, outstanding borrowings on our credit facility at December 31, 2013. As of February 17, 2014, we had $560totaled $830 million of outstanding borrowings andwith approximately $936 million$1.9 billion of borrowing availability on our credit facility.
Based on our 2016 capital expenditure budget, our forecasted cash flows and projected levels of indebtedness, we expect to maintain compliance with the covenants under our credit facility, after considering outstanding borrowingsthree-year term loan, and letterssenior note indentures for at least the next 12 months. Further, we expect to meet in the ordinary course of credit.business other contractual cash commitments to third parties pursuant to the various agreements subsequently described under the heading Contractual Obligations and in Part II, Item 8. Notes to Consolidated Financial Statements—Note 10. Commitments and Contingencies, recognizing we may be required to meet such commitments even if our business plan assumptions were to change.
Cash Flows
Cash flows from operating activities
Our net cash provided by operating activities was $2.6$1.86 billion and $1.6$3.36 billion for the years ended December 31, 20132015 and 2012,2014, respectively. The increasedecrease in operating cash flows was primarily due to higherlower crude oil and natural gas revenues driven by higher sales volumes and higherlower realized commodity prices, which werea decrease in cash gains on derivative settlements, and an increase in interest expense over the past year, all partially offset by an increaselower production taxes.
If the depressed commodity price environment existing in February 2016 persists or worsens, we expect our 2016 operating cash losses on matured derivatives and increases in production expenses, production taxes, general and administrative expenses, interest expense and other expenses associated withflows will be lower than 2015 levels, the growthextent of our operations duringwhich is uncertain due to the year.unpredictable nature of commodity prices.
Cash flows used in investing activities
During the years ended December 31, 20132015 and 2012,2014, we had cash flows used in investing activities (excluding proceeds from asset sales and other) of $3.74$3.08 billion and $4.12$4.72 billion, respectively, related to our capital program, inclusive of dry hole costs and property acquisitions. Cash acquisition capital expenditures totaled $268.1$61.0 million and $1.1$203.9 million for the years ended December 31, 2015 and 2014, respectively. Cash capital expenditures excluding acquisitions totaled $3.02 billion and $4.51 billion for the years ended December 31, 20132015 and 2012, respectively. In 2012 we executed certain transactions to acquire properties in North Dakota totaling $939 million, with no transactions of similar size in 2013. Cash capital expenditures excluding acquisitions totaled $3.47 billion and $2.99 billion for the years ended December 31, 2013 and 2012,2014, respectively, the increasedecrease of which was driven by an increasea decrease in our capital budget and related drilling activity for 2013.2015. Our cash capital expenditures for 2015 include the payment of amounts owed at December 31, 2014 in connection with our 2014 drilling program and associated $519.9 million decrease in accruals for capital expenditures for the year ended December 31, 2015.


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The use of cash for capital expenditures during the year ended December 31, 20122015 was partially offset by proceeds received from asset dispositions. Proceeds from the sale of assets amounted to $214.7$34.0 million for 2012,2015, primarily related to our February 2012the disposition of certain Wyoming propertiesnon-producing leasehold acreage in Oklahoma for proceeds of $84.4 million,totaling $25.9 million.
For 2016, we currently expect our June 2012 disposition of certain Oklahoma propertiescash flows used in investing activities will be significantly lower than 2015 levels due to our decision to reduce our planned drilling activity for proceeds of $15.9 million,2016 in response to the continued decrease in crude oil prices in late 2015 and our December 2012 disposition of certain East region propertiesearly 2016. Our capital expenditures for $126.4 million, of which $14.0 million had not been received at December 31, 2012. No significant asset dispositions occurred during the year ended December 31, 2013.2016 are budgeted to be $920 million.
Cash flows from financing activities
Net cash provided by financing activities for the year ended December 31, 20132015 totaled $1.1$1.19 billion, primarily resulting from net borrowings of $688 million on our revolving credit facility and $500 million of proceeds received from a new three-year term loan entered into in November 2015. Our 2015 operating cash flows were adversely impacted by decreased commodity prices, leading to an increase in credit facility borrowings incurred for the payment of amounts owed in connection with our 2014 drilling program and to fund a portion of our 2015 drilling program.

Net cash provided by financing activities for the year ended December 31, 2014 totaled $1.23 billion, primarily resulting from the receipt of $1.48$1.68 billion of net proceeds from the issuance of $1.5$1.0 billion of 4 1/2%3.8% Senior Notes due 20232024 and $700 million of 4.9% Senior Notes due 2044 in April 2013,May 2014, partially offset by net repayments of $320.0$110 million on our revolving credit facility duringand the year.

Net cash provided by financing activitiesJuly 2014 redemption of $2.3 billion for the year ended December 31, 2012 was primarily the result of $787.0 million of net proceeds received from the March 2012 issuance of $800 million of 5%our 8.25% Senior Notes due 2022 and an additional $1.21 billion2019 for $317.5 million.

The level of net proceeds received from the issuance of $1.2 billion of additional 2022 Notes at 102.375% of par in August 2012, along with $237.0 million of net borrowings made on our credit facility borrowings we incurred in 2015 is not expected to fund a portion ofcontinue in 2016. We are seeking to generally balance our 20122016 capital program.expenditures with cash flows, which we expect will result in significantly reduced capital spending and credit facility borrowings in 2016 compared to 2015.
Future Sources of Financing
Although we cannot provide any assurance, assuming sustained strength in crude oil prices and successful implementation of our business strategy, we believe funds from operating cash flows, our remaining cash balance and availability under our revolving credit facility including our ability to increase our borrowing capacity thereunder, should be sufficient to meet our cash requirements inclusive of, but not limited

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to, normal operating needs, debt service obligations, planned capital expenditures, and commitments for at least the next 12 months. We
Our 2016 capital expenditures budget is reflective of the depressed commodity price environment and has been established based on an expectation of available cash flows, with any cash flow deficiencies expected to be funded by borrowings under our revolving credit facility.
If cash flows are materially impacted by a further decline in commodity prices, we have the ability to reduce our capital expenditures or utilize the availability of our revolving credit facility if needed to fund our operations. On November 4, 2015 we refinanced $500 million of then outstanding credit facility borrowings into a new three-year term loan, and we may choose to access the capital markets for additional financing or capital to take advantage of business opportunities that may arise if such financing can be arranged aton favorable terms. Additionally, we may choose to sell assets to obtain funding for our operations and capital program.
Based on our planned production growth and derivative contracts we have in place to limit the downside risk of adverse price movements associated with the forecasted sale of future production, weWe currently anticipate we will be able to generate or obtain funds sufficient to meet our short-term and long-term cash requirements. We intend to finance future capital expenditures primarily through cash flows from operations and through borrowings under our revolving credit facility, but we may also issue debt or equity securities or sell assets. The issuance of additional debt requires a portion of our cash flows from operations be used for the payment of interest and principal on our debt, thereby reducing our ability to use cash flows to fund working capital, capital expenditures and acquisitions. The issuance of additional equity securities could have a dilutive effect on the value of our common stock.
CreditRevolving credit facility
We have aan unsecured credit facility, maturing on July 1, 2015, that hasMay 16, 2019, with aggregate lender commitments totaling $1.5 billion. In November 2013, following an upgrade by S&P, as permitted by the credit facility terms, we provided the lenders under our credit facility notice of our intention to elect an Additional Covenant Period. The election of an Additional Covenant Period means that the credit facility is not currently subject to a borrowing base. The election was made in order to facilitate the release of collateral consisting of oil and gas properties securing obligations under the credit facility. On December 11, 2013, we delivered notice to the credit facility lenders confirming we had satisfied all conditions for releasing the collateral and the release of such collateral became effective as of December 12, 2013. On December 13, 2013, our credit rating was upgraded by Moody's. As a result of the second upgrade, we are not currently required to: (i) comply with certain reporting requirements; and (ii) maintain a ratio of the present value of oil and gas properties to total funded debt of not less than 1.5 to 1.0, as set forth in the credit facility.
The credit facility's commitments of $1.5$2.75 billion, canwhich may be increased up to $2.5a total of $4.0 billion underupon agreement between the terms of the facility.Company and participating lenders. The commitments are from a syndicate of 1317 banks and financial institutions. We believe each member of the current syndicate has the capability to fund its commitment. If one or more lenders cannot fund its commitment, we may not have the full availability of the $1.5 billion commitment.
We had $275 million of outstanding borrowings and $1.2 billion of borrowing availability (after considering outstanding borrowings and letters of credit) on our credit facility at December 31, 2013. As of February 17, 2014,19, 2016, we had $560 million of outstanding borrowings and $936 millionapproximately $1.9 billion of borrowing availability on our credit facility (afterafter considering outstanding borrowings and letters of credit). credit. Borrowings bear interest at market-based interest rates plus a margin that is based on the terms of the borrowing and the credit ratings assigned to our senior, unsecured, long-term indebtedness.
The commitments under our revolving credit facility are not dependent on a borrowing base calculation subject to periodic redetermination based on changes in commodity prices and proved reserves. Additionally, downgrades or other negative rating actions with respect to our credit rating, such as the recent downgrades by S&P and Moody's that occurred in February 2016, do not trigger a reduction in our current credit facility commitments, nor do such actions trigger a security requirement or change in covenants. The recent downgrades of our credit rating will, however, trigger a 0.250% increase in outstanding borrowings subsequent to December 31, 2013 resulted from borrowings incurred to fundour credit facility's interest rate and a portion0.075% increase in the rate of commitment fees paid on unused borrowing availability under our 2014 capital program.credit facility.

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Our revolving credit facility contains restrictive covenants that may limit our ability to, among other things, incur additional indebtedness, sell assets, make loans to others, make investments, enter into mergers, change material contracts, incur liens, and engage in certain othersale and leaseback transactions, without the prior consentand merge, consolidate or sell all or substantially all of the lenders.our assets. Our credit facility also contains requirementsa requirement that we maintain a current ratio of not less than 1.0 to 1.0 and a ratio of total fundedconsolidated net debt to EBITDAXtotal capitalization ratio of no greater than 4.00.65 to 1.0. 1.00. This ratio represents the ratio of net debt (total debt less cash and cash equivalents) divided by the sum of net debt plus total shareholders' equity plus, to the extent resulting in a reduction of total shareholders' equity, the amount of any non-cash impairment charges incurred, net of any tax effect, after June 30, 2014.
We were in compliance with theseour revolving credit facility covenants at December 31, 20132015 and expect to maintain compliance for at least the next 12 months. At December 31, 2013,2015, our currentconsolidated net debt to total capitalization ratio, as defined was 1.7 to 1.0 and our total funded debt to EBITDAX ratio was 1.7 to 1.0. A violation of these covenants in the future could result in a default under our credit facility and such event could result in an acceleration of other outstanding indebtedness. In the event of such default, the lenders underas amended, was 0.58 to 1.00. As we are focused on balancing our credit facility could elect2016 capital spending with cash flows to terminate their commitments thereunder, cease making further loans, and could declare all outstanding amounts, if any, to be due and payable. If outstandingminimize new borrowings, under our credit facility were to be accelerated, our assets may not be sufficient to repay in full such indebtedness. Wewe do not believe the restrictivecredit facility covenants are reasonably likely to limit our ability to undertake additional debt or equity financing to a material extent.
Our ability to remain in an Additional Covenant Period as described above is dependent on the credit ratings assigned to our senior unsecured debt. In the future, we may not be able to access adequate funding under our credit facility as a result of (i) a decrease in our credit ratings that nullifies our eligibility for the Additional Covenant Period and triggers the reinstatement of a borrowing base requirement, subjecting us to the risk that other events may adversely impact the size of our borrowing base, (ii) a decline in commodity prices, or (iii) an unwillingness or inability on the part of our lending counterparties to meet their funding obligations or increase their commitments as required under the credit facility.
If we are unable to access funding on acceptable terms when needed, we may not be able to fully implement our business plans, complete new property acquisitions to replace our reserves, take advantage of business opportunities, respond to competitive pressures, or refinance our debt obligations as they come due, any of which could have a material adverse effect on our operations and financial results.
Derivative activities
As part of our risk management program, we economically hedge a portion of our anticipated future crude oil and natural gas production to achieve more predictable cash flows and to reduce our exposure to fluctuations in crude oil and natural gas prices. Reducing our exposure to price volatility helps ensure adequate funds are available for our capital program. Our decision on the quantity and price at which we choose to hedge our future production is based in part on our view of current and future market conditions and our desire to have the cash flowsextent if needed to fundsupport our business. At December 31, 2015, our total debt would have needed to independently increase by approximately $2.6 billion, or 36%, above existing levels at that date (with no corresponding increase in cash or reduction in refinanced debt) to reach the developmentmaximum covenant ratio of 0.65 to 1.00. Alternatively, our inventory of undeveloped crude oil and natural gas reserves in conjunction with our growth strategy. See Note 5. Derivative Instruments in Notestotal shareholders' equity would have needed to Consolidated Financial Statements for further discussion of the accounting applicable to our derivative instruments, a summary of open contractsindependently decrease by approximately $1.4 billion, or 30%, below existing levels at December 31, 20132015 (excluding the after-tax impact of any non-cash impairment charges) to reach the maximum covenant ratio. These independent point-in-time sensitivities do not take into account other factors that could arise to mitigate the impact of changes in debt and the estimated fair valueequity on our consolidated net debt to total capitalization ratio, such as disposing of those contracts asassets or exploring alternative sources of that date. Additionally, a summary of derivative contractscapitalization.

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Joint development agreement funding
In September 2014, we entered into afteran agreement with a U.S. subsidiary of SK E&S Co. Ltd ("SK") of South Korea to jointly develop a significant portion of the Company's Northwest Cana natural gas properties. Pursuant to the agreement SK will fund, or carry, 50% of our drilling and completion costs attributable to an area of mutual interest within our Northwest Cana properties until approximately $270 million has been expended by SK on our behalf. As of December 31, 2013 is provided subsequently under2015, approximately$200 million of the heading Crude Oil and Natural Gas Hedging. We expect to continue entering into derivative instruments covering a portion of our future crude oil and/or natural gas production in order to further secure cash flows in support of our growth plans; however, we may choose not to hedge future production if the pricing environment for certain time periods is not deemedcarry had yet to be favorable.realized and is expected to be realized over the next four years.
Future Capital Requirements
Senior notes
Our long-term debt includes outstanding senior note obligations totaling $4.4$5.8 billion at December 31, 2013. Scheduled2015. We have no near-term senior note maturities, with our earliest scheduled maturity being our $200 million of our senior notes begin2020 Notes due in October 2019.2020. Our senior notes are not subject to any mandatory redemption or sinking fund requirements. For further information on the face values, maturity dates, semi-annual interest payment dates, optional redemption periods and covenant restrictions related to our senior notes, see Part II, Item 8. Notes to Consolidated Financial Statements - Statements—Note 7. Long-Term Debt.
We were in compliance with our senior note covenants at December 31, 20132015 and expect to maintain compliance for at least the next 12 months. We do not believe the restrictive covenants under the senior note indenturescovenants will materially limit our ability to undertake additional debt financing. Downgrades or equity financing.other negative rating actions with respect to the credit ratings assigned to our senior unsecured debt, such as the recent downgrades by S&P and Moody's that occurred in February 2016, do not trigger additional senior note covenants that are more restrictive than the existing covenants at December 31, 2015.
Two of our subsidiaries, Banner Pipeline Company, L.L.C. and CLR Asset Holdings, LLC, which have insignificantno material assets with no current value and noor operations, fully and unconditionally guarantee the senior notes.notes on a joint and several basis. Our other subsidiary, 20 Broadway Associates LLC,subsidiaries, the value of whose assets and operations are minor, doesdo not guarantee the senior notes.
Term loan
In November 2015, we entered into a $500 million unsecured term loan that matures in full in November 2018 and bears interest at variable market-based interest rates plus a margin that is based on the terms of the borrowing and the credit ratings assigned to the Company's senior, unsecured, long-term indebtedness. Downgrades or other negative rating actions with respect to our credit rating, such as the recent downgrades that occurred in February 2016, do not trigger a security requirement or change in covenants for the term loan. The recent downgrades of our credit rating will, however, trigger a 0.125% increase in our term loan's interest rate.
The covenant requirements in the three-year term loan are consistent with the covenants in our revolving credit facility, including the requirement that we maintain a consolidated net debt to total capitalization ratio of no greater than 0.65 to 1.0. We were in compliance with the three-year term loan's covenants at December 31, 2015 and expect to maintain compliance for at least the next 12 months.
Capital expenditures
We evaluate opportunities to purchase or sell crude oil and natural gas properties and expect to participate as a buyer or seller of properties at various times. We seek acquisitions that utilize our technical expertise or offer opportunities to expand our existing core areas. Acquisition expenditures are not budgeted.

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For the year ended December 31, 2013,2015, we invested approximately $3.57$2.5 billion in our capital program, excluding $268.1$61.0 million of unbudgeted acquisitions, and including $28.4 million of seismic costs and $89.5excluding $519.9 million of capital costs associated with increaseddecreased accruals for capital expenditures.expenditures, and including $4.0 million of seismic costs. Our capital expenditures budget for 20132015 was $3.60$2.7 billion excluding acquisitions which are not budgeted. 2013unbudgeted acquisitions. Our 2015 capital expenditures were allocated as follows:follows by quarter:  

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In millionsAmount
Exploration and development drilling$3,120.9
Land costs295.4
Capital facilities, workovers and re-completions66.9
Buildings, vehicles, computers and other equipment61.9
Seismic (1)28.4
Capital expenditures, excluding acquisitions$3,573.5
Acquisitions of producing properties16.6
Acquisitions of non-producing properties251.5
Total acquisitions268.1
Total capital expenditures$3,841.6
(1)Includes $12.9 million of exploratory seismic costs recognized as exploration expense and $15.5 million of developmental seismic costs capitalized in conjunction with development drilling projects.
Our 2013 capital program focused primarily on increased exploration and development in the Bakken field of North Dakota and Montana and the SCOOP play in south-central Oklahoma.
In millions1Q 20152Q 20153Q 20154Q 2015YTD 2015
Exploration and development drilling$914.2
$518.3
$477.8
$343.6
$2,253.9
Land costs27.1
19.9
28.3
32.8
108.1
Capital facilities, workovers and other corporate assets40.9
45.1
33.8
17.5
137.3
Seismic1.6
2.2
0.1
0.1
4.0
Capital expenditures, excluding acquisitions$983.8
$585.5
$540.0
$394.0
$2,503.3
Acquisitions of producing properties0.1
0.4

0.1
0.6
Acquisitions of non-producing properties36.7
6.0

17.7
60.4
Total acquisitions36.8
6.4

17.8
61.0
Total capital expenditures$1,020.6
$591.9
$540.0
$411.8
$2,564.3
In September 2013,January 2016, our Board of Directors approved a 20142016 capital expenditureexpenditures budget of $4.05 billion$920 million excluding acquisitions, which is expected to be allocated as follows: 
In millionsAmountAmount
Exploration and development drilling$3,540
$784
Land costs300
78
Capital facilities, workovers and re-completions150
Buildings, vehicles, computers and other equipment30
Capital facilities, workovers and other corporate assets55
Seismic30
3
Total 2014 capital budget, excluding acquisitions$4,050
Total 2016 capital budget, excluding acquisitions$920

Our 2014planned non-acquisition capital spending for 2016 has been set based on an expectation of available cash flows and is designed to target capital expenditures and cash flows being relatively balanced for 2016, with any cash flow deficiencies being funded by borrowings under our revolving credit facility.

For 2016, we plan is expected to continue focusing on exploratory and developmentoperate an average of approximately 19 drilling inrigs for the Bakken field and the SCOOP play.
Although we cannot provide any assurance, assuming sustained strength in crude oil prices and successful implementationyear. We expect to spend 35% of our business strategy, including2016 capital expenditures in North Dakota Bakken and 28% in SCOOP. Other key investment areas will be the futureSTACK play, with 15% of capital expenditures, and our joint development area in Northwest Cana, with 7% of capital expenditures. The remaining 15% of our proved reserves2016 budget will target other capital expenditures such as routine leasing and realization of our cash flows as anticipated, we believe funds from operating cash flows, our remaining cash balance,renewals, work-overs, and our credit facility, including our ability to increase our borrowing capacity thereunder, will be sufficient to fund our planned 2014 capital program; however, we may choose to accessfacilities.

Our rig activity and the capital markets for additional financing to take advantage of business opportunities that may arise if such financing can be arranged at favorable terms. The actual amount and timing of our capital expenditures may differ materially from our estimatesbudget as a result of, among other things, access to capital, available cash flows, unbudgeted acquisitions, actual drilling results, the availability of drilling rigs and other services and equipment, the availability of transportation capacity, changes in commodity prices, and regulatory, technological and competitive developments. Further, a decline inWe monitor our capital spending closely based on actual and projected cash flows and may continue to scale back our spending should commodity prices could cause us to curtail our actual capital expenditures.decrease further. Conversely, an increase in commodity prices could result in increased capital expenditures. We expect to continue participating as a buyer of properties when and if we have the ability to increase our position in strategic plays at competitive terms.

5763



Contractual Obligations
The following table presents our contractual obligations and commitments as of December 31, 2013:2015:
 
 Payments due by period Payments due by period
In thousands Total Less than
1 year (2014)
 Years 2 and 3
(2015-2016)
 Years 4 and 5
(2017-2018)
 More than
5 years
 Total Less than
1 year (2016)
 Years 2 and 3
(2017-2018)
 Years 4 and 5
(2019-2020)
 More than
5 years
Arising from arrangements on the balance sheet: 
 
 
 
 
 
 
 
 
 
Credit facility borrowings $275,000
 $
 $275,000
 $
 $
 $853,000
 $
 $
 $853,000
 $
Term loan 500,000
 
 500,000
 
 
Senior Notes (1) 4,400,000
 
 
 
 4,400,000
 5,800,000
 
 
 200,000
 5,600,000
Note payable (2) 18,470
 2,011
 4,222
 4,500
 7,737
 14,379
 2,144
 4,500
 4,795
 2,940
Interest expense (3) 1,956,796
 240,701
 474,857
 471,643
 769,595
Interest payments (3) 2,817,452
 308,236
 614,747
 572,360
 1,322,109
Asset retirement obligations (4) 55,787
 1,434
 1,209
 176
 52,968
 102,909
 1,658
 13,187
 600
 87,464
Arising from arrangements not on balance sheet: 
 
 
 
 
Operating leases and other (5) 7,027
 3,811
 2,628
 406
 182
Drilling rig commitments (6) 109,510
 83,336
 26,174
 
 
Fracturing and well stimulation services (7) 15,853
 15,853
 
 
 
Arising from arrangements not on balance sheet: (5) 
 
 
 
 
Operating leases and other (6) 26,430
 9,197
 10,838
 3,289
 3,106
Drilling rig commitments (7) 421,564
 199,763
 197,705
 24,096
 
Pipeline transportation commitments (8) 67,290
 16,188
 28,992
 10,010
 12,100
 1,005,094
 214,734
 419,284
 201,290
 169,786
Rail transportation commitments (9) 9,821
 9,821
 
 
 
Cost sharing commitment (10) 24,538
 14,925
 9,613
 
 
Fuel purchase commitment (9) 30,845
 30,845
 
 
 
Total contractual obligations $6,940,092
 $388,080
 $822,695
 $486,735
 $5,242,582
 $11,571,673
 $766,577
 $1,760,261
 $1,859,430
 $7,185,405

(1)
Amounts represent scheduled maturities of our senior note obligations at December 31, 20132015 and do not reflect any discount or premium at which the senior notes were issued. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 7. Long-Term Debt for a description of our senior notes.
(2)Represents future principal payments on $22 million borrowed in February 2012 under a 10-year amortizing term loannote payable secured by the Company’s corporate office building in Oklahoma City, Oklahoma. Principal and interest are payable monthly through the loan’s maturity date of February 26, 2022.
(3)Interest expense includespayments include scheduled cash interest payments on the senior notes and note payable as well as estimated interest payments on our revolving credit facility and three-year term loan borrowings outstanding at December 31, 20132015 and assumes the actual weighted average interest raterates on our revolving credit facility borrowings and three-year term loan of 1.7%1.9% and 1.8%, respectively, at December 31, 2013 continues2015 continue through the July 1, 2015respective maturity datedates of the facility.arrangements.
(4)
Amounts represent estimated discounted costs for future dismantlement and abandonment of our crude oil and natural gas properties. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 1. Organization and Summary of Significant Accounting Policies for additional discussion of our asset retirement obligations.
(5)The commitment amounts included in this section primarily represent costs associated with wells operated by the Company. A portion of these costs will be borne by other interest owners. Due to variations in well ownership, our net share of these costs cannot be determined with certainty.
(6)Amounts primarily represent leases for electric infrastructure, office equipment, communication towers, and tanks for storage of hydraulic fracturing fluids, in addition tosponsorship agreements, and purchase obligations mainly related to software services.
(6)(7)Amounts represent commitments under drilling rig contracts with various terms extending through January 2016. These contracts were entered into in the ordinary course of businessto year-end 2019 to ensure rig availability to allow us to execute our business objectives in our strategic plays.
(7)We have an agreement with a third party whereby the third party will provide, on a take-or-pay basis, hydraulic fracturing services and related equipment to service certain of our properties in North Dakota and Montana. The agreement, which expires in September 2014, requires us to pay a fixed rate per day for a minimum number of days per calendar quarter over the term regardless of whether the services are provided.key operating areas.
(8)
We have entered into firm transportation commitments to guarantee pipeline access capacity on operational crude oil and natural gas pipelines in order to move our production to market and to reduce the impact of possible production curtailments that may arise due to limited transportation capacity. These commitments require us to pay per-unit transportation charges regardless of the amount of pipeline capacity used. We are not committed under these contracts to deliver fixed and determinable quantities of crude oil or natural gas in the future. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 10. Commitments and Contingencies for additional discussion.
(9)
We have entered into firm transportation commitmentsa forward purchase commitment with a third party to guarantee capacity on rail transportation facilities in order to reduce the impact of possible production curtailments that may arise due to limited transportation capacity. The rail commitments require us to pay varying per-barrel transportation charges regardless of the amount of rail capacity used. We are not committed under these contracts to deliver fixed and determinablepurchase specified quantities of crude oildiesel fuel at specified prices for use in the future.our drilling operations. See Part II, Item 8. Notes to Consolidated Financial Statements—Note 10. Commitments and Contingencies for additional discussion.

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(10)We have entered into an arrangement to share certain costs associated with a local utility company's construction and installation of electrical infrastructure that will provide service to parts of North Dakota where we operate. This arrangement extends through January 2016 and requires us to make scheduled periodic payments based on the projected total cost of the project and the progress of construction.

In addition to the operational pipeline transportation commitments described above, we are a party to 5-year firm transportation commitments for future crude oil pipeline projects that are being constructed or considered for development that are not yet operational. Such projects require the granting of regulatory approvals or otherwise require significant additional construction efforts by the counterparties before being completed. Future commitments under the non-operational arrangements total approximately $1.0 billion at December 31, 2013, representing aggregate transportation charges expected to be incurred over the 5-year terms of the arrangements assuming the proposed pipeline projects are completed and become operational. The exact timing of the commencement of pipeline operations is not known due to uncertainties involving matters such as regulatory approvals, resolution of legal and environmental disputes, construction progress and the ultimate probability of pipeline completion. Accordingly, the timing of our obligations under these non-operational arrangements cannot be predicted with certainty and may not be incurred on a ratable basis over a calendar year or may not be incurred at all. For these reasons, these obligations have not been reflected in the contractual obligations table above. Although timing is uncertain, operators have indicated that certain pipeline projects may become operational in the fourth quarter of 2014, which would obligate us for transportation charges totaling $36 million in 2014, $143 million per year in years 2015 through 2018, and $106 million in 2019 associated with those projects.
Crude Oil and Natural Gas Hedging
As part of our risk management program, we economically hedge a portion of our anticipated future crude oil and natural gas production to achieve more predictable cash flows and to reduce our exposure to fluctuations in crude oil and natural gas prices. Reducing our exposure to price volatility helps ensure adequate funds are available for our capital program. While the use of hedging arrangements limits the downside risk of adverse price movements, their use also limits future revenues from upward price movements. The use of hedging transactions also involves the risk that the counterparties will be unable to meet the financial terms of such transactions. Our derivative contracts are with multiple counterparties to minimize our exposure to any individual counterparty. All of our derivative contracts are with parties that are lenders (or affiliates of lenders) under our credit facility. For a discussion of the potential risks associated with our hedging program, refer to Part I, Item 1A. Risk Factors—Our derivative activities could result in financial losses or reduce our earnings.
Our derivative contracts are settled based upon reported settlement prices on commodity exchanges, with crude oil derivative settlements based on NYMEX West Texas Intermediate ("WTI") pricing or Inter-Continental Exchange ("ICE") pricing for Brent crude oil and natural gas derivative settlements based on NYMEX Henry Hub pricing. See Notes to Consolidated Financial Statements—Note 5. Derivative Instruments for further discussion of the accounting applicable to our derivative instruments, a summary of open contracts as of December 31, 2013 and the estimated fair value of the contracts as of that date.
Between January 1, 2014 and February 17, 2014, we entered into additional derivative contracts summarized in the tables below. None of these contracts have been designated for hedge accounting.
Crude Oil—ICE Brent
Period and Type of Contract Bbls Weighted
Average Price
January 2015 - December 2015 
 
Swaps - ICE Brent 6,205,000
 $100.27
Natural Gas—NYMEX Henry Hub
Period and Type of Contract MMBtus Weighted
Average Price
January 2014 - December 2014 
 
Swaps - Henry Hub 40,495,000
 $4.26
January 2015 - December 2015 
 
Swaps - Henry Hub 22,700,000
 $4.27
January 2016 - December 2016 

 

Swaps - Henry Hub 4,550,000
 $4.27

5964



Critical Accounting Policies and Estimates
Our consolidated financial statements and related footnotes contain information that is pertinent to our management’s discussion and analysis of financial condition and results of operations. PreparationThe preparation of financial statements in conformity with generally accepted accounting principles generally accepted in the United States requires our management to select appropriate accounting policies and to make estimates judgments and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses, and the disclosure and estimation of contingent assets and liabilities. However, theSee Part II, Item 8. Notes to Consolidated Financial Statements—Note 1. Organization and Summary of Significant Accounting Policies for descriptions of our major accounting principles used by us generally do not change ourpolicies. Certain of these accounting policies involve judgments and uncertainties to such an extent that there is a reasonable likelihood that materially different amounts could have been reported cash flowsunder different conditions or liquidity. Interpretation of existing rules must be done and judgments must be made on how the specifics of a given rule apply to us.if different assumptions had been used.
In management’s opinion, the most significant reporting areas impacted by management’s judgments and estimates are crude oil and natural gas reserve estimations, revenue recognition, the choice of accounting method for crude oil and natural gas activities and derivatives, impairment of assets, income taxes and contingent liabilities. These areas are discussed below. Management’s judgments and estimates in these areas are based on information available from both internal and external sources, including engineers, geologists and historical experience in similar matters.matters and are believed to be reasonable under the circumstances. We evaluate our estimates and assumptions on a regular basis. Actual results could differ from the estimates as additional information becomes known.
Crude Oil and Natural Gas Reserves Estimation and Standardized Measure of Future Cash Flows
Our external independent reserve engineers, Ryder Scott, and internal technical staff prepare the estimates of our crude oil and natural gas reserves and associated future net cash flows. Even though Ryder Scott and our external independent reserve engineers and internal technical staff are knowledgeable and follow authoritative guidelines for estimating reserves, they must make a number of subjective assumptions based on professional judgments in developing the reserve estimates. Estimates of reserves and their values, future production rates, and future costs and expenses are inherently uncertain for various reasons, including many factors beyond the Company's control. Reserve estimates are updated by us at least semi-annually and take into account recent production levels and other technical information about each of our fields.
Crude oil and natural gas reserve engineering is a subjective process of estimating underground accumulations of crude oil and natural gas that cannot be precisely measured. The accuracy of any reserve estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. Periodic revisions to the estimated reserves and future cash flows may be necessary as a result of a number of factors, including reservoir performance, new drilling, crude oil and natural gas prices, changes in costs, technological advances, new geological or geophysical data, or other economic factors. Accordingly, reserve estimates may differ significantly from the quantities of crude oil and natural gas ultimately recovered. For the years ended December 31, 2015, 2014, and 2013, our proved reserves were revised downward from prior years' reports by approximately 297.2 MMBoe, 107.9 MMBoe, and 96.1 MMBoe, respectively. We cannot predict the amounts or timing of future reserve revisions.
Estimates of proved reserves are key components of the Company's most significant financial estimates including the computation of depreciation, depletion, amortization and impairment of proved crude oil and natural gas properties. Holding all other factors constant, if proved reserves are revised downward, the rate at which we record DD&A expense would increase, reducing net income. Future revisions of reserves may be material and could significantly alter future depreciation, depletion, and amortization expense and may result in material impairments of assets.
At December 31, 2015, our proved reserves totaled 1,226 MMBoe as determined using 12-month average prices of $50.28 per barrel for crude oil and $2.58 per MMBtu for natural gas. Crude oil prices existing in February 2016 are significantly lower than the 2015 average price used to determine our year-end proved reserves. Holding all other factors constant, if crude oil prices used in our year-end reserve estimates were decreased by $15.00 per barrel, thereby approximating the pricing environment existing in February 2016, our proved reserves at December 31, 2015 could decrease by approximately 146 MMBoe, or 12%. If the proved reserves used in our DD&A calculations had been lower by 12% across all fields throughout 2015, our DD&A expense for 2015 would have increased by an estimated $235 million, or 13%. Our DD&A calculations for oil and gas properties are performed on a field basis and revisions to proved reserves will not necessarily be applied ratably across all fields and may not be applied to some fields at all. Further, reserve revisions in significant fields may individually affect our DD&A rate. As a result, the impact on DD&A expense from a 12% revision in reserves cannot be predicted with certainty and may result in a change that is greater or less than 13%.
Revenue Recognition
We derive substantially all of our revenues from the sale of crude oil and natural gas. Crude oil and natural gas revenues are recognized in the month the product is delivered to the purchaser and title transfers. We generally receive payment from one to three months after the sale has occurred. We useAt the sales methodend of accountingeach month, to record revenue we estimate the amount of production

65



delivered and sold to purchasers and the prices at which they were sold. Variances between estimated revenues and actual amounts received for all prior months are recorded in the month payment is received and are reflected in our financial statements as crude oil and natural gas imbalances in those circumstances where wesales. These variances have under-produced or over-produced our ownership percentage in a property. Under this method, a receivable or payable is recognized only to the extent an imbalance cannot be recouped from the reserves in the underlying properties.historically not been material.
Successful Efforts Method of Accounting
Our business is subject to accounting rules that are unique to the crude oil and natural gas industry. Two generally accepted methods of accounting for oil and gas activities are available - the successful efforts method and the full cost method. The most significant differences between these two methods are the treatment of exploration costs and the manner in which the carrying value of oil and gas properties are amortized and evaluated for impairment. We use the successful efforts method of accounting for our crude oil and natural gas properties, whereby costs incurredproperties. See Part II, Item 8. Notes to acquire mineral interests in crude oilConsolidated Financial Statements—Note 1. Organization and natural gas properties,Summary of Significant Accounting Policies for further discussion of the accounting policies applicable to drill and equip exploratory wells that find proved reserves, to drill and equip development wells, and expenditures for enhanced recovery operations are capitalized. Geological and geophysical costs, seismic costs incurred for exploratory projects, lease rentals and costs associated with unsuccessful exploratory wells or projects are expensed as incurred. Coststhe successful efforts method of seismic studies that are utilized in development drilling within an area of proved reserves are capitalized as development costs. To the extent a seismic project covers areas of both developmental and exploratory drilling, those seismic costs are proportionately allocated between capitalized development costs and exploration expense. Maintenance, repairs and costs of injection are expensed as incurred, except that the costs of replacements or renewals that expand capacity or improve production are capitalized.
Depreciation, depletion, and amortization of capitalized drilling and development costs of crude oil and natural gas properties, including related support equipment and facilities, are generally computed using the unit-of-production method on a field basis

60



based on total estimated proved developed crude oil and natural gas reserves. Amortization of producing leaseholds is based on the unit-of-production method using total estimated proved reserves. In arriving at rates under the unit-of-production method, the quantities of recoverable crude oil and natural gas reserves are established based on estimates made by our internal geologists and engineers and external independent reserve engineers. Service properties, equipment and other assets are depreciated using the straight-line method over estimated useful lives of 3 to 40 years. Upon sale or retirement of depreciable or depletable property, the cost and related accumulated depreciation, depletion and amortization are eliminated from the accounts and the resulting gain or loss, if any, is recognized. Unit of production rates are revised whenever there is an indication of a need, but at least in conjunction with semi-annual reserve reports. Revisions are accounted for prospectively as changes in accounting estimates.accounting.
Derivative Activities
We may utilize derivative contracts to hedge against the variability in cash flows associated with the forecasted sale of our future crude oil and natural gas production. In addition, we may utilize basis contracts to hedge the differential between NYMEX posted prices and those of our physical pricing points. We do not use derivative instruments for trading purposes. Under accounting rules, we may elect to designate those derivatives that qualify for hedge accounting as cash flow hedges against the price we will receive for our future crude oil and natural gas production. We have elected not to designate any of our price risk management activities as cash flow hedges. As a result, we mark our derivative instruments to fair value and recognize the changes in fair value in current earnings. As such, we are likely to experience significant non-cash volatility in our reported earnings during periods of commodity price volatility. Derivative assets and liabilities with the same counterparty and subject to contractual terms which provide for net settlement are reported on a net basis on our consolidated balance sheets.
In determining the amounts to be recorded for our open derivative contracts, we are required to estimate the fair value of the derivatives. We use an independent third party to provide our derivative valuations. The third party’s valuation models for derivative contracts are industry-standard models that consider various inputs including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. The calculation of the fair value ofcalculations for our collar contracts requirescollars and written call options require the use of an option-pricing model. The estimated future prices are compared to the prices fixed by the derivative agreements and the resulting estimated future cash inflows or outflows over the lives of the derivatives are discounted to calculate the fair value of the derivative contracts. These pricing and discounting variables are sensitive to market volatility as well as changes in future price forecasts and interest rates. See Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk for a discussion of the sensitivity of derivative fair value calculations to changes in forward commodity prices.
We validate our derivative valuations through management review and by comparison to our counterparties’ valuations for reasonableness. Differences between our fair value calculations and counterparty valuations have historically not been material.
Impairment of Assets
All of our long-lived assets are monitored for potential impairment when circumstances indicate the carrying value of an asset may be greater than its future net cash flows, including cash flows from risk adjustedrisk-adjusted proved reserves. Estimated future net cash flows associated with risk-adjusted probable and possible reserves may be taken into consideration when determining fair value when such reserves exist and are economically recoverable.
Proved crude oil and natural gas properties are reviewed for impairment on a field-by-field basis. If the carrying amount of a field exceeds its estimated undiscounted future cash flows, the carrying amount of the field is reduced to its estimated fair value using a discounted cash flow model. For producing properties, the impairment evaluations involve a significant amount of judgment since the results are based on estimated future events, such as future sales prices for crude oil and natural gas, future costs to produce those products, estimates of future crude oil and natural gas reserves to be recovered and the timing thereof, the economic and regulatory climates and other factors. The need to test a field for impairment may result from significant declines in sales prices or downward revisions to crude oil and natural gas reserves. Any assets held for sale are reviewed for impairment when we approve the plan to sell. Estimates of anticipated sales prices and recoverable reserves are highly judgmental and are subject to material revision in future periods.
Impairment provisions for producing properties totaled $138.9 million for 2015, of which $27.5 million was recognized in the fourth quarter. Commodity price assumptions used for the year-end December 31, 2015 impairment calculations were based on publicly available average annual forward commodity strip prices through year-end 2020 and were then escalated at 3% per year thereafter. Holding all other factors constant, as forward commodity prices decrease, our probability for recognizing producing property impairments may increase, or the magnitude of impairments to be recognized may increase. Conversely, as forward commodity prices increase, our probability for recognizing producing property impairments may decrease, or the magnitude of impairments to be recognized may decrease or be eliminated. As of December 31, 2015, the forward commodity strip prices for the year 2020 used in our fourth quarter impairment calculations averaged $53.80 per barrel for crude oil and $3.18 per Mcf for natural gas. Forward crude oil strip prices existing in February 2016 are lower than the year-end 2015 crude oil strip prices. If forward crude oil prices remain at current levels for an extended period or decline further, additional

66



impairments of producing properties may be recognized in the future. Because of the uncertainty inherent in thesethe numerous factors utilized in determining the fair value of producing properties, we cannot predict when or ifthe timing and amount of future impairment charges, will be recorded.if any.
Non-producing crude oil and natural gasImpairment losses for non-producing properties, which primarily consist primarily of undeveloped leasehold costs and costs associated with the purchase of certain proved undeveloped reserves, are assessed for impairment on a property-by-property basis for individually significant balances, if any, and on an aggregate basis by prospect for individually insignificant balances. If the assessment indicates an impairment, a loss is recognized by providing a valuation allowance atamortizing the level consistent withportion of the level atproperties’ costs which impairment was assessed.management estimates will not be transferred to proved properties over the lives of the leases based on drilling plans, experience of successful drilling, and the average holding period. The impairment assessment isassessments are affected by economic factors such as the results of exploration activities, commodity price outlooks, anticipated drilling programs, remaining lease terms, and potential shifts in business strategy employed by management. For individually insignificant non-producing properties, impairment losses are recognized by amortizing the portion of the properties’ costs which management estimates will not be transferred to proved properties over the lives of the leases based on experience of successful drilling and the average holding period. The estimated timing and rate of successful drilling is highly judgmental and is subject to material revision in future periods as better information becomes available.

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Income Taxes
We make certain estimates and judgments in determining our income tax expense for financial reporting purposes. These estimates and judgments occur in the calculation of certain deferred tax assets and liabilities that arise from differences in the timing and recognition of revenue and expense for tax and financial reporting purposes. Our federal and state income tax returns are generally not prepared or filed before the consolidated financial statements are prepared; therefore, we estimate the tax basis of our assets and liabilities at the end of each period as well as the effects of tax rate changes, tax credits and net operating loss carryforwards. Adjustments related to these estimates are recorded in our tax provision in the period in which we file our income tax returns. Further, we must assess the likelihood that we will be able to recover or utilize our deferred tax assets. If recovery is not likely, we must record a valuation allowance against such deferred tax assets for the amount we would not expect to recover, which would result in an increase to our income tax expense. As of December 31, 2013,2015, we believe all deferred tax assets, recorded onnet of valuation allowances, reflected in our consolidated balance sheets will ultimately be utilized. We consider future taxable income in making such assessments. Numerous judgments and assumptions are inherent in the determination of future taxable income, including factors such as future operating conditions (particularly related to prevailing crude oil and natural gas prices). If our estimates and judgments change regarding our ability to utilize our deferred tax assets, our tax provision could increase in the period it is determined that it is more likely than not that a deferred tax asset will not be utilized.
Our effective tax rate is subject to variability from period to period as a result of factors other than changes in federal and state tax rates and/or changes in tax laws which can affect tax-paying companies. Our effective tax rate is affected by changes in the allocation of property, payroll, and revenues between states in which we own property as rates vary from state to state. Due to the size of our gross deferred tax balances, a small change in our estimated future tax rate can have a material effect on current period earnings.
Contingent Liabilities
A provision for legal, environmental and other contingencies is charged to expense when a loss is probable and the loss or range of loss can be reasonably estimated. Determining when liabilities and expenses should be recorded for these contingencies and the appropriate amounts of accruals is subject to an estimation process that requires subjective judgment of management. In certain cases, management’s judgment is based on the advice and opinions of legal counsel and other advisers, the interpretation of laws and regulations which can be interpreted differently by regulators and/or courts of law, the experience of the Company and other companies dealing with similar matters, and management’s decision on how it intends to respond to a particular matter; for example, a decision to contest it vigorously or a decision to seek a negotiated settlement. Actual losses can differ from estimates for various reasons, including differing interpretations of laws and opinions and assessments on the amount of damages. We closely monitor known and potential legal, environmental and other contingencies and make our best estimate of when or if to record liabilities and losses for matters based on available information.
Off-Balance Sheet Arrangements
Currently, we do not have any off-balance sheet arrangements with unconsolidated entities to enhance liquidity and capital resources. However, as is customary in the crude oil and natural gas industry, we have various contractual commitments that are not reflected in the consolidated balance sheets as shown under Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Contractual Obligations.
Recent Accounting Pronouncements Not Yet Adopted
We are monitoring the joint standard-setting efforts of the Financial Accounting Standards Board and International Accounting Standards Board. There are a number of pending accounting standards being targeted for completion in 2014 and beyond, including, but not limited to, standards relating to revenue recognition, accounting for leases, fair value measurements, and accounting for financial instruments. Because these pending standards have not yet been finalized, at this time we are not able to determine the potential future impact these standards will have, if any, on our financial position, results of operations or cash flows.

6267



Pending Legislative and Regulatory Initiatives
The crude oil and natural gas industry in the United States is subject to various types of regulation at the federal, state and local levels. Laws, rules, regulations, policies, and interpretations affecting our industry have been pervasive and are continuously reviewed by legislators and regulators, including the imposition of new or increased requirements on us and other industry participants. See Part I, Item 1. Business—Regulation of the Crude Oil and Natural Gas Industry for a discussion of significant laws and regulations that have been enacted or are currently being considered by regulatory bodies that may affect us in the areas in which we operate. We believe we are in substantial compliance with all laws and regulations and policies currently applicable to our operations and our continued compliance with existing requirements will not have a material adverse impact on us. However, because public policy changes affecting our industry are commonplace and because laws and regulations may be amended or reinterpreted, we are unable to predict the future cost or impact of complying with such laws and regulations.
Inflation
In recent years prior to 2015 we have experienced inflationary pressure on technical staff compensation and the cost of oilfield services and equipment due to increases in drilling activity particularly in the North region, and competitive pressures resulting from higherattractive crude oil pricesprices. However, in 2015 certain service and equipment costs decreased below 2014 levels as service providers reduced their costs in response to the significant decrease in commodity prices. If the existing commodity price environment persists or worsens in 2016 our industry may againexperience an additional decrease in certain service and equipment costs. However, inflationary pressures may return in the future.future if commodity prices recover from current levels.
Non-GAAP Financial Measures
EBITDAX
We present EBITDAX throughout this Annual Report on Form 10-K, which is a non-GAAP financial measure. We define EBITDAX representsas earnings before interest expense, income taxes, depreciation, depletion, amortization and accretion, property impairments, exploration expenses, non-cash gains and losses resulting from the requirements of accounting for derivatives, and non-cash equity compensation expense.expense, and losses on extinguishment of debt. EBITDAX is not a measure of net income or operating cash flows as determined by U.S. GAAP.
Management believes EBITDAX is useful because it allows us to more effectively evaluate our operating performance and compare the results of our operations from period to period without regard to our financing methods or capital structure. Further, we believe EBITDAX is a widely followed measure of operating performance and may also be used by investors to measure our ability to meet future debt service requirements, if any. We exclude the items listed above from net income (loss) and operating cash flows in arriving at EBITDAX because these amounts can vary substantially from company to company within our industry depending upon accounting methods and book values of assets, capital structures and the method by which the assets were acquired.
EBITDAX should not be considered as an alternative to, or more meaningful than, net income (loss) or operating cash flows as determined in accordance with U.S. GAAP or as an indicator of a company’s operating performance or liquidity. Certain items excluded from EBITDAX are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure, as well as the historic costs of depreciable assets, none of which are components of EBITDAX. Our credit facility defines EBITDAX consistently with the definition of EBITDAX utilized and presented by us. Our computations of EBITDAX may not be comparable to other similarly titled measures of other companies.
We believe EBITDAX is a widely followed measure of operating performance and may also be used by investors to measure our ability to meet future debt service requirements, if any. Our credit facility requires that we maintain a total funded debt to EBITDAX ratio of no greater than 4.0 to 1.0 on a rolling four-quarter basis. This ratio represents the sum of outstanding borrowings and letters of credit under our credit facility plus our note payable and senior note obligations, divided by total EBITDAX for the most recent four quarters. We were in compliance with this covenant at December 31, 2013.

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The following table provides a reconciliation of our net income to EBITDAX for the periods presented. 
 Year Ended December 31, Year Ended December 31,
In thousands 2013 2012 2011 2010 2009 2015 2014 2013 2012 2011
Net income $764,219
 $739,385
 $429,072
 $168,255
 $71,338
Net income (loss) $(353,668) $977,341
 $764,219
 $739,385
 $429,072
Interest expense 235,275
 140,708
 76,722
 53,147
 23,232
 313,079
 283,928
 235,275
 140,708
 76,722
Provision for income taxes 448,830
 415,811
 258,373
 90,212
 38,670
Provision (benefit) for income taxes (181,417) 584,697
 448,830
 415,811
 258,373
Depreciation, depletion, amortization and accretion 965,645
 692,118
 390,899
 243,601
 207,602
 1,749,056
 1,358,669
 965,645
 692,118
 390,899
Property impairments 220,508
 122,274
 108,458
 64,951
 83,694
 402,131
 616,888
 220,508
 122,274
 108,458
Exploration expenses 34,947
 23,507
 27,920
 12,763
 12,615
 19,413
 50,067
 34,947
 23,507
 27,920
Impact from derivative instruments: 
 
 
 
 
          
Total (gain) loss on derivatives, net 191,751
 (154,016) 30,049
 130,762
 1,520
 (91,085) (559,759) 191,751
 (154,016) 30,049
Total cash (paid) received on derivatives, net (61,555) (45,721) (34,106) 35,495
 569
 69,553
 385,350
 (61,555) (45,721) (34,106)
Non-cash (gain) loss on derivatives, net 130,196
 (199,737) (4,057) 166,257
 2,089
 (21,532) (174,409) 130,196
 (199,737) (4,057)
Non-cash equity compensation 39,890
 29,057
 16,572
 11,691
 11,408
 51,834
 54,353
 39,890
 29,057
 16,572
Loss on extinguishment of debt 
 24,517
 
 
 
EBITDAX $2,839,510
 $1,963,123
 $1,303,959
 $810,877
 $450,648
 $1,978,896
 $3,776,051
 $2,839,510
 $1,963,123
 $1,303,959

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The following table provides a reconciliation of our net cash provided by operating activities to EBITDAX for the periods presented. 
 Year Ended December 31, Year Ended December 31,
In thousands 2013 2012 2011 2010 2009 2015 2014 2013 2012 2011
Net cash provided by operating activities $2,563,295
 $1,632,065
 $1,067,915
 $653,167
 $372,986
 $1,857,101
 $3,355,715
 $2,563,295
 $1,632,065
 $1,067,915
Current income tax provision 6,209
 10,517
 13,170
 12,853
 2,551
 24
 20
 6,209
 10,517
 13,170
Interest expense 235,275
 140,708
 76,722
 53,147
 23,232
 313,079
 283,928
 235,275
 140,708
 76,722
Exploration expenses, excluding dry hole costs 25,597
 22,740
 19,971
 9,739
 6,138
 11,032
 26,388
 25,597
 22,740
 19,971
Gain on sale of assets, net 88
 136,047
 20,838
 29,588
 709
 23,149
 600
 88
 136,047
 20,838
Excess tax benefit from stock-based compensation 
 15,618
 
 5,230
 2,872
 13,177
 
 
 15,618
 
Other, net (1,829) (7,587) (4,606) (3,513) (3,890) (10,044) (17,279) (1,829) (7,587) (4,606)
Changes in assets and liabilities 10,875
 13,015
 109,949
 50,666
 46,050
 (228,622) 126,679
 10,875
 13,015
 109,949
EBITDAX $2,839,510
 $1,963,123
 $1,303,959
 $810,877
 $450,648
 $1,978,896
 $3,776,051
 $2,839,510
 $1,963,123
 $1,303,959
PV-10
Our PV-10 value, a non-GAAP financial measure, is derived from the Standardized Measure of discounted future net cash flows, which is the most directly comparable financial measure computed using U.S. GAAP. PV-10 generally differs from Standardized Measure because it does not include the effects of income taxes on future net revenues. At December 31, 2013,2015, our PV-10 totaled approximately $20.2$8.0 billion. The Standardized Measure of our discounted future net cash flows was approximately $16.3$6.5 billion at December 31, 2013,2015, representing a $3.9$1.5 billion difference from PV-10 due to the effect of deducting estimated future income taxes in arriving at Standardized Measure. We believe the presentation of PV-10 is relevant and useful to investors because it presents the discounted future net cash flows attributable to proved reserves held by companies without regard to the specific income tax characteristics of such entities and is a useful measure of evaluating the relative monetary significance of our crude oil and natural gas properties. Investors may utilize PV-10 as a basis for comparing the relative size and value of our proved reserves to other companies. PV-10 should not be considered as a substitute for, or more meaningful than, the Standardized Measure as determined in accordance with U.S. GAAP. Neither PV-10 nor Standardized Measure represents an estimate of the fair market value of our crude oil and natural gas properties.

6469



Item 7A.Quantitative and Qualitative Disclosures About Market Risk
General. We are exposed to a variety of market risks including commodity price risk, credit risk, and interest rate risk. We seek to address these risks through a program of risk management which may include the use of derivative instruments.
Commodity Price Risk. Our primary market risk exposure is in the pricing applicable toprices we receive from sales of our crude oil and natural gas production. Realized pricing is primarily driven by the prevailing worldwide price for crude oil and spot market prices applicable to our natural gas production. Pricing for crude oil and natural gas has been volatile and unpredictable for several years, and we expect this volatility to continue in the future. The prices we receive for production depend on many factors outside of our control, including volatility in the differences between product prices at sales points and the applicable index prices. Based on our average daily production for the year ended December 31, 20132015 and excluding any effect of our derivative instruments in place, our annual revenue would increase or decrease by approximately $350$535 million for each $10.00 per barrel change in crude oil prices and $88$164 million for each $1.00 per Mcf change in natural gas prices.
To reduce price risk caused by these market fluctuations, from time to time we may economically hedge a portion of our anticipated crude oil and natural gas production as part of our risk management program. In addition, we may utilize basis contracts to hedge the differential between derivative contract index prices and those of our physical pricing points. Reducing our exposure to price volatility helps ensure we have adequatesecure funds availableto be used for our capital program. Our decision on the quantity and price at which we choose to hedge our production is based in part on our view of current and future market conditions. We may choose not to hedge future production if the pricing environment for certain time periods is deemed to be unfavorable. Additionally, we may choose to liquidate existing derivative positions prior to the expiration of their contractual maturities in order to monetize favorable gain positions for the purpose of funding our capital program. While hedging, if utilized, limits the downside risk of adverse price movements, it also limits future revenues from upward price movements. Our crude oil production and sales for 2016 and beyond are currently unhedged and directly exposed to continued volatility in crude oil market prices, whether favorable or unfavorable.
Changes in commoditynatural gas prices during the year ended December 31, 20132015 had an overall negativefavorable impact on the fair value of our derivative instruments. For the year ended December 31, 2013,2015, we recognized cash lossesgains on derivatives of $61.6$69.6 million and reported a non-cash mark-to-market lossgains on derivatives of $130.2$21.5 million.
The fair value of our natural gas derivative instruments at December 31, 20132015 was a net liabilityasset of $94.7$101 million. The mark-to-market net liability relates to derivative instruments with various terms that are scheduled to mature over the period from January 2014 through December 2015. Over this period, actual derivative settlements may differ significantly, either positively or negatively, from the mark-to-market valuation at December 31, 2013. An assumed increase in the forward commodity prices used in the year-end valuation of our derivative instrumentsnatural gas derivatives of $10.00 per barrel for crude oil and $1.00 per MMBtu for natural gas would increase our net derivative liability to approximately $485 million at December 31, 2013. Conversely, an assumed decrease in forward commodity prices of $10.00 per barrel for crude oil and $1.00 per MMBtu for natural gas would change our derivative valuation to a net assetliability of approximately $289$101 million at December 31, 2013.2015. Conversely, an assumed decrease in forward prices of $1.00 per MMBtu would increase our natural gas derivative asset to approximately $302 million at December 31, 2015.
For a further discussion of our hedging activities, see Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Crude Oil and Natural Gas Hedging andSee Part II, Item 8. Notes to Consolidated Financial Statements—Note 5. Derivative Instruments.for further discussion of our hedging activities, including a summary of derivative contracts in place as of December 31, 2015.
Credit Risk. We monitor our risk of loss due to non-performance by counterparties of their contractual obligations. Our principal exposure to credit risk is through the sale of our crude oil and natural gas production, which we market to energy marketing companies, refineriescrude oil refining companies, and affiliatesnatural gas gathering and processing companies ($656.2379 millionin receivables at December 31, 2013)2015), our joint interest receivables ($350.0232 millionat December 31, 2013)2015), and counterparty credit risk associated with our derivative instrument receivables ($3.6108 million at December 31, 2013)2015).
We monitor our exposure to counterparties on crude oil and natural gas sales primarily by reviewing credit ratings, financial statements and payment history. We extend credit terms based on our evaluation of each counterparty’s credit worthiness. We have not generally required our counterparties to provide collateral to supportsecure crude oil and natural gas sales receivables owed to us. Historically, our credit losses on crude oil and natural gas sales receivables have been immaterial.
Joint interest receivables arise from billing the individuals and entities whichwho own a partial interest in the wells we operate. These individuals and entities participate in our wells primarily based on their ownership in leases included in units on which we wish to drill. We can do very little to choose who participates in our wells. In order to minimize our exposure to credit risk we generally request prepayment of drilling costs where it is allowed by contract or state law. For such prepayments, a liability is recorded and subsequently reduced as the associated work is performed. This liability was $57.2$50 million as ofat December 31, 2013,2015, which will be used to offset future capital costs when billed. In this manner, we reduce credit risk. We alsomay have the right to place a lien on our co-owners interest in the well to redirect production proceeds in order to secure payment or, if necessary, foreclose on the interest. Historically, our credit losses on joint interest receivables have been immaterial.

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Our use of derivative instruments involves the risk that our counterparties will be unable to meet their commitments under the arrangements. We manage this risk by using multiple counterparties who we consider to be financially strong in order to minimize our exposure to credit risk with any individual counterparty. All of our derivative contracts are with parties that are lenders (or affiliates of lenders) under our credit facility.

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Interest Rate Risk. Our exposure to changes in interest rates relates primarily to any variable-rate borrowings we may have outstanding from time to time under our revolving credit facility.facility and three-year term loan. We manage our interest rate exposure by monitoring both the effects of market changes in interest rates and the proportion of our debt portfolio that is variable-rate versus fixed-rate debt. We may utilize interest rate derivatives to alter interest rate exposure in an attempt to reduce interest rate expense related to existing debt issues. Interest rate derivatives may be used solely to modify interest rate exposure and not to modify the overall leverage of the debt portfolio. We currently have no interest rate derivatives.
We had $560 millionan aggregate of $1.33 billion of variable rate borrowings outstanding borrowings underon our revolving credit facility and three-year term loan at February 17, 2014.19, 2016. The impact of a 1% increase in interest rates on this amount of debt would result in increased interest expense of approximately $5.6$13.3 million per year and a $3.5an $8.2 million decrease in net income per year. Our credit facility matures on July 1, 2015 and the weighted-average interest rate on outstanding borrowings at February 17, 2014 was 1.7%.
The following table presents our debt maturities and the weighted average interest rates by expected maturity date as of December 31, 2013:
2015: 
In thousands 2014 2015 2016 2017 2018 Thereafter Total 2016 2017 2018 2019 2020 Thereafter Total
Fixed rate debt: 
 
 
 
 
 
 
 
 
 
 
 
 
 
Senior Notes: 
 
 
 
 
 
 
 
 
 
 
 
 
 
Principal amount (1) $
 $
 $
 $
 $
 $4,400,000
 $4,400,000
 $
 $
 $
 $
 $200,000
 $5,600,000
 $5,800,000
Weighted-average interest rate 
 
 
 
 
 5.4% 5.4% 
 
 
 
 7.4% 4.8% 4.9%
Note payable: 
 
 
 
 
 
 
 
 
 
 
 
 
 
Principal amount $2,011
 $2,078
 $2,144
 $2,214
 $2,286
 $7,737
 $18,470
 $2,144
 $2,214
 $2,286
 $2,360
 $2,435
 $2,940
 $14,379
Interest rate 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1%
Variable rate debt: 
 
 
 
 
 
 
 
 
 
 
 
 
 
Credit facility: 
 
 
 
 
 
 
 
 
 
 
 
 
 
Principal amount $
 $275,000
 $
 $
 $
 $
 $275,000
 $
 $
 $
 $853,000
 $
 $
 $853,000
Weighted-average interest rate 
 1.7% 
    1.7% 
 
 
 1.9% 
 
 1.9%
Term loan:              
Principal amount $
 $
 $500,000
 $
 $
 $
 $500,000
Interest rate 
 
 1.8% 
 
 
 1.8%
(1)Amount doesAmounts do not reflect any discount or premium at which the senior notes were issued.
Changes in interest rates affect the amounts we pay on borrowings under our revolving credit facility.facility and three-year term loan. Such borrowings bear interest at market-based interest rates plus a margin that is based on the terms of the borrowing and the credit ratings assigned to our senior, unsecured, long-term indebtedness. In February 2016, our corporate credit rating was downgraded by S&P and Moody's in response to weakened oil and gas industry conditions and resulting revisions made to rating agency commodity price assumptions. These downgrades will cause the interest rates on our revolving credit facility borrowings and three-year term loan to increase by 0.250% and 0.125%, respectively. All of our other long-term indebtedness is fixed rate and does not expose us to the risk of cash flow loss due to changes in market interest rates. However, changes in interest rates do affect the fair values of our senior notes and note payable.


6671



Item 8.Financial Statements and Supplementary Data


Index to Consolidated Financial Statements

6772



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Shareholders
Continental Resources, Inc.
We have audited the accompanying consolidated balance sheets of Continental Resources, Inc. (an Oklahoma corporation) and Subsidiariessubsidiaries (the Company)"Company") as of December 31, 20132015 and 2012,2014, and the related consolidated statements of comprehensive income (loss), shareholders’ equity and cash flows for each of the three years in the period ended December 31, 2013.2015. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Continental Resources, Inc. and Subsidiariessubsidiaries as of December 31, 20132015 and 2012,2014, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 20132015 in conformity with accounting principles generally accepted in the United States of America.
As discussed in Note 1 to the consolidated financial statements, the Company adopted new accounting guidance in 2015 and 2014, related to the presentation of debt issuance costs. Also, as discussed in Note 1 to the consolidated financial statements, the Company adopted new accounting guidance in 2015 and 2014, related to the presentation of deferred income taxes.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company’s internal control over financial reporting as of December 31, 2013,2015, based on criteria established in the 19922013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated February 26, 201424, 2016 expressed an unqualified opinion.


/s/  GRANT THORNTON LLP

Oklahoma City, Oklahoma
February 26, 201424, 2016

6873



Continental Resources, Inc. and Subsidiaries
Consolidated Balance Sheets
 December 31, December 31,
In thousands, except par values and share data 2013 2012 2015 2014
Assets        
Current assets:        
Cash and cash equivalents $28,482
 $35,729
 $11,463
 $24,381
Receivables:        
Crude oil and natural gas sales 643,498
 468,650
 378,622
 552,476
Affiliated parties 13,107
 12,410
 122
 13,360
Joint interest and other, net 349,579
 356,111
 232,293
 567,476
Derivative assets 3,616
 18,389
 93,922
 52,423
Inventories 54,440
 46,743
 94,151
 102,179
Deferred and prepaid taxes 44,337
 365
Prepaid taxes 94
 63,266
Prepaid expenses and other 10,207
 8,386
 11,672
 14,040
Total current assets 1,147,266
 946,783
 822,339
 1,389,601
Net property and equipment, based on successful efforts method of accounting 10,721,272
 8,105,269
 14,063,328
 13,635,852
Net debt issuance costs and other 72,644
 55,726
Noncurrent derivative assets 
 32,231
 14,560
 31,992
Other noncurrent assets 19,581
 18,588
Total assets $11,941,182
 $9,140,009
 $14,919,808
 $15,076,033
        
Liabilities and shareholders’ equity        
Current liabilities:        
Accounts payable trade $885,289
 $687,310
 $553,285
 $1,263,724
Revenues and royalties payable 291,772
 261,856
 187,000
 272,755
Payables to affiliated parties 5,436
 6,069
 69
 7,305
Accrued liabilities and other 198,113
 155,681
 176,947
 259,157
Derivative liabilities 90,535
 12,999
 3,583
 1,645
Current portion of long-term debt 2,011
 1,950
 2,144
 2,078
Total current liabilities 1,473,156
 1,125,865
 923,028
 1,806,664
Long-term debt, net of current portion 4,713,821
 3,537,771
 7,115,644
 5,926,800
Other noncurrent liabilities:        
Deferred income tax liabilities 1,736,812
 1,262,576
Deferred income tax liabilities, net 2,090,228
 2,286,796
Asset retirement obligations, net of current portion 54,353
 44,944
 101,251
 75,462
Noncurrent derivative liabilities 7,829
 2,173
 3,706
 3,109
Other noncurrent liabilities 2,093
 2,981
 17,051
 9,358
Total other noncurrent liabilities 1,801,087
 1,312,674
 2,212,236
 2,374,725
Commitments and contingencies (Note 10) 
 
 
 
Shareholders’ equity:        
Preferred stock, $0.01 par value; 25,000,000 shares authorized; no shares issued and outstanding 
 
 
 
Common stock, $0.01 par value; 500,000,000 shares authorized;    
185,658,659 shares issued and outstanding at December 31, 2013;    
185,604,681 shares issued and outstanding at December 31, 2012 1,857
 1,856
Common stock, $0.01 par value; 1,000,000,000 shares authorized;    
372,959,080 shares issued and outstanding at December 31, 2015;    
372,005,502 shares issued and outstanding at December 31, 2014 3,730
 3,720
Additional paid-in capital 1,252,034
 1,226,835
 1,345,624
 1,287,941
Accumulated other comprehensive loss (3,354) (385)
Retained earnings 2,699,227
 1,935,008
 3,322,900
 3,676,568
Total shareholders’ equity 3,953,118
 3,163,699
 4,668,900
 4,967,844
Total liabilities and shareholders’ equity $11,941,182
 $9,140,009
 $14,919,808
 $15,076,033

The accompanying notes are an integral part of these consolidated financial statements.
6974



Continental Resources, Inc. and Subsidiaries
Consolidated Statements of Comprehensive Income (Loss)
 
 Year Ended December 31, Year Ended December 31,
In thousands, except per share data 2013 2012 2011 2015 2014 2013
Revenues:            
Crude oil and natural gas sales $3,501,666
 $2,315,840
 $1,553,629
 $2,551,131
 $4,107,894
 $3,473,026
Crude oil and natural gas sales to affiliates 105,108
 63,593
 93,790
 1,400
 95,128
 100,405
Gain (loss) on derivative instruments, net (191,751) 154,016
 (30,049) 91,085
 559,759
 (191,751)
Crude oil and natural gas service operations 40,127
 39,071
 32,419
 36,551
 38,837
 40,127
Total revenues 3,455,150
 2,572,520
 1,649,789
 2,680,167
 4,801,618
 3,421,807
            
Operating costs and expenses:            
Production expenses 280,789
 193,466
 135,178
 347,243
 347,349
 280,789
Production and other expenses to affiliates 6,111
 6,675
 4,632
Production expenses to affiliates 1,654
 5,123
 1,408
Production taxes and other expenses 327,427
 223,737
 143,236
 200,637
 349,760
 298,787
Exploration expenses 34,947
 23,507
 27,920
 19,413
 50,067
 34,947
Crude oil and natural gas service operations 29,665
 32,248
 26,735
 17,337
 21,871
 29,665
Depreciation, depletion, amortization and accretion 965,645
 692,118
 390,899
 1,749,056
 1,358,669
 965,645
Property impairments 220,508
 122,274
 108,458
 402,131
 616,888
 220,508
General and administrative expenses 144,379
 121,735
 72,817
 189,846
 184,655
 144,379
Gain on sale of assets, net (88) (136,047) (20,838) (23,149) (600) (88)
Total operating costs and expenses 2,009,383
 1,279,713
 889,037
 2,904,168
 2,933,782
 1,976,040
Income from operations 1,445,767
 1,292,807
 760,752
Income (loss) from operations (224,001) 1,867,836
 1,445,767
Other income (expense):            
Interest expense (235,275) (140,708) (76,722) (313,079) (283,928) (235,275)
Loss on extinguishment of debt 
 (24,517) 
Other 2,557
 3,097
 3,415
 1,995
 2,647
 2,557
 (232,718) (137,611) (73,307) (311,084) (305,798) (232,718)
Income before income taxes 1,213,049
 1,155,196
 687,445
Provision for income taxes 448,830
 415,811
 258,373
Net income $764,219
 $739,385
 $429,072
Basic net income per share $4.15
 $4.08
 $2.42
Diluted net income per share $4.13
 $4.07
 $2.41
Income (loss) before income taxes (535,085) 1,562,038
 1,213,049
Provision (benefit) for income taxes (181,417) 584,697
 448,830
Net income (loss) $(353,668) $977,341
 $764,219
Basic net income (loss) per share $(0.96) $2.65
 $2.08
Diluted net income (loss) per share $(0.96) $2.64
 $2.07
      
Comprehensive income (loss):      
Net income (loss) $(353,668) $977,341
 $764,219
Other comprehensive loss, net of tax      
Foreign currency translation adjustments (2,969) (385) 
Total other comprehensive loss, net of tax (2,969) (385) 
Comprehensive income (loss) $(356,637) $976,956
 $764,219

The accompanying notes are an integral part of these consolidated financial statements.
7075



Continental Resources, Inc. and Subsidiaries
Consolidated Statements of Shareholders’ Equity
 
In thousands, except share data 
Shares
outstanding
 
Common
stock
 
Additional
paid-in
capital
 
Retained
earnings
 
Total
shareholders’
equity
 
Shares
outstanding
 
Common
stock
 
Additional
paid-in
capital
 
Accumulated
other
comprehensive
loss
 
Retained
earnings
 
Total
shareholders’
equity
Balance at December 31, 2010 170,408,652
 $1,704
 $439,900
 $766,551
 $1,208,155
Net income 
 
 
 429,072
 429,072
Public offering of common stock 10,080,000
 101
 659,131
 
 659,232
Stock-based compensation 
 
 16,567
 
 16,567
Stock options:          
Exercised 18,470
 
 13
 
 13
Repurchased and canceled (2,495) 
 (150) 
 (150)
Restricted stock:          
Issued 491,315
 5
 
 
 5
Repurchased and canceled (82,807) (1) (4,767) 
 (4,768)
Forfeited (41,447) 
 
 
 
Balance at December 31, 2011 180,871,688
 $1,809
 $1,110,694
 $1,195,623
 $2,308,126
Net income 
 
 
 739,385
 739,385
Common stock issued in exchange for assets 3,916,157
 39
 81,489
 
 81,528
Stock-based compensation 
 
 30,209
 
 30,209
Excess tax benefit on stock-based compensation 
 
 15,618
 
 15,618
Stock options:          
Exercised 86,500
 
 60
 
 60
Repurchased and canceled (32,984) 
 (2,951) 
 (2,951)
Restricted stock:          
Issued 916,028
 9
 
 
 9
Repurchased and canceled (112,521) (1) (8,284) 
 (8,285)
Forfeited (40,187) 
 
 
 
Balance at December 31, 2012 185,604,681
 $1,856
 $1,226,835
 $1,935,008
 $3,163,699
 371,209,362
 $3,712
 $1,224,979
 $
 $1,935,008
 $3,163,699
Net income 
 
 
 764,219
 764,219
 
 
 
 
 764,219
 764,219
Stock-based compensation 
 
 39,888
 
 39,888
 
 
 39,886
 
 
 39,886
Restricted stock:                      
Issued 261,259
 3
 
 
 3
Granted 522,518
 5
 
 
 
 5
Repurchased and canceled (138,525) (1) (14,689) 
 (14,690) (277,050) (3) (14,687) 
 
 (14,690)
Forfeited (68,756) (1) 
 
 (1) (137,512) (1) 
 
 
 (1)
Balance at December 31, 2013 185,658,659
 $1,857
 $1,252,034
 $2,699,227
 $3,953,118
 371,317,318
 $3,713
 $1,250,178
 $
 $2,699,227
 $3,953,118
Net income 
 
 
 
 977,341
 977,341
Other comprehensive loss, net of tax 
 
 
 (385) 
 (385)
Stock-based compensation 
 
 54,343
 
 
 54,343
Restricted stock:            
Granted 1,424,764
 14
 
 
 
 14
Repurchased and canceled (283,434) (3) (16,580) 
 
 (16,583)
Forfeited (453,146) (4) 
 
 
 (4)
Balance at December 31, 2014 372,005,502
 $3,720
 $1,287,941
 $(385) $3,676,568
 $4,967,844
Net income (loss) 
 
 
 
 (353,668) (353,668)
Other comprehensive loss, net of tax 
 
 
 (2,969) 
 (2,969)
Stock-based compensation 
 
 51,817
 
 
 51,817
Excess tax benefit from stock-based compensation 
 
 13,177
 
 
 13,177
Restricted stock:            
Granted 1,462,534
 15
 
 
 
 15
Repurchased and canceled (172,786) (2) (7,311) 
 
 (7,313)
Forfeited (336,170) (3) 
 
 
 (3)
Balance at December 31, 2015 372,959,080
 $3,730
 $1,345,624
 $(3,354) $3,322,900
 $4,668,900

The accompanying notes are an integral part of these consolidated financial statements.
7176



Continental Resources, Inc. and Subsidiaries
Consolidated Statements of Cash Flows
 Year Ended December 31, Year Ended December 31,
In thousands 2013 2012 2011 2015 2014 2013
Cash flows from operating activities:            
Net income $764,219
 $739,385
 $429,072
Adjustments to reconcile net income to net cash provided by operating activities:      
Net income (loss) $(353,668) $977,341
 $764,219
Adjustments to reconcile net income (loss) to cash provided by operating activities:      
Depreciation, depletion, amortization and accretion 965,437
 694,698
 391,844
 1,746,454
 1,368,311
 965,437
Property impairments 220,508
 122,274
 108,458
 402,131
 616,888
 220,508
Non-cash (gain) loss on derivatives, net 130,196
 (199,737) (4,057) (21,532) (174,409) 130,196
Stock-based compensation 39,890
 29,057
 16,572
 51,834
 54,353
 39,890
Provision for deferred income taxes 442,621
 405,294
 245,203
Provision (benefit) for deferred income taxes (181,441) 584,677
 442,621
Excess tax benefit from stock-based compensation 
 (15,618) 
 (13,177) 
 
Dry hole costs 9,350
 767
 7,949
 8,381
 23,679
 9,350
Gain on sale of assets, net (88) (136,047) (20,838) (23,149) (600) (88)
Loss on extinguishment of debt 
 24,517
 
Other, net 2,037
 5,007
 3,661
 12,646
 7,637
 2,037
Changes in assets and liabilities:            
Accounts receivable (166,138) (91,791) (294,702) 524,973
 (129,634) (166,138)
Inventories (7,697) (7,165) (3,412) 7,997
 (65,919) (7,697)
Prepaid expenses and other (11,537) 14,381
 (3,329)
Other current assets 65,493
 (57,489) (11,537)
Accounts payable trade 107,250
 (8,487) 83,907
 (201,434) 85,540
 107,250
Revenues and royalties payable 28,401
 40,030
 88,976
 (85,754) (18,022) 28,401
Accrued liabilities and other 44,260
 40,309
 20,784
 (84,056) 58,880
 44,260
Other noncurrent assets and liabilities (5,414) (292) (2,173) 1,403
 (35) (5,414)
Net cash provided by operating activities 2,563,295
 1,632,065
 1,067,915
 1,857,101
 3,355,715
 2,563,295
            
Cash flows from investing activities:            
Exploration and development (3,660,773) (3,493,652) (1,925,577) (3,042,747) (4,604,468) (3,660,773)
Purchase of producing crude oil and natural gas properties (16,604) (570,985) (65,315) (557) (48,917) (16,604)
Purchase of other property and equipment (62,054) (53,468) (44,750) (36,951) (63,402) (62,054)
Proceeds from sale of assets and other 28,420
 214,735
 30,928
 34,008
 129,388
 28,420
Net cash used in investing activities (3,711,011) (3,903,370) (2,004,714) (3,046,247) (4,587,399) (3,711,011)
            
Cash flows from financing activities:            
Revolving credit facility borrowings 970,000
 2,119,000
 493,000
Repayment of revolving credit facility (1,290,000) (1,882,000) (165,000)
Credit facility borrowings 2,001,000
 1,695,000
 970,000
Repayment of credit facility (1,313,000) (1,805,000) (1,290,000)
Proceeds from issuance of Senior Notes 1,479,375
 1,999,000
 
 
 1,681,834
 1,479,375
Proceeds from issuance of common stock 
 
 659,736
Redemption of Senior Notes 
 (300,000) 
Premium on redemption of Senior Notes 
 (17,497) 
Proceeds from other debt 
 22,000
 
 500,000
 
 
Repayment of other debt (1,951) (1,579) 
 (2,078) (2,013) (1,951)
Debt issuance costs (2,265) (7,373) (36) (4,597) (8,026) (2,265)
Equity issuance costs 
 
 (368)
Repurchase of equity grants (14,690) (11,236) (4,918)
Repurchase of restricted stock for tax withholdings (7,313) (16,583) (14,690)
Excess tax benefit from stock-based compensation 
 15,618
 
 13,177
 
 
Exercise of stock options 
 60
 13
Net cash provided by financing activities 1,140,469
 2,253,490
 982,427
 1,187,189
 1,227,715
 1,140,469
Effect of exchange rate changes on cash (10,961) (132) 
Net change in cash and cash equivalents (7,247) (17,815) 45,628
 (12,918) (4,101) (7,247)
Cash and cash equivalents at beginning of period 35,729
 53,544
 7,916
 24,381
 28,482
 35,729
Cash and cash equivalents at end of period $28,482
 $35,729
 $53,544
 $11,463
 $24,381
 $28,482

The accompanying notes are an integral part of these consolidated financial statements.
7277



Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements
Note 1. Organization and Summary of Significant Accounting Policies
Description of the Company
Continental Resources, Inc. (the “Company”) was originally formed in 1967 and is incorporated under the laws of the State of Oklahoma. The Company's principal business is crude oil and natural gas exploration, development and production with properties primarily located in the North, South, and East regions of the United States. The North region consists of properties north of Kansas and west of the Mississippi River and includes North Dakota Bakken, Montana Bakken, and the Red River units. The South region includes Kansas and all properties south of Kansas and west of the Mississippi River including various plays in the SouthSCOOP (South Central Oklahoma Oil Province (“SCOOP”)Province), STACK (Sooner Trend Anadarko Canadian Kingfisher), Northwest Cana and Arkoma Woodford areas of Oklahoma. The East region is comprised of undeveloped leasehold acreage east of the Mississippi River.River with no current drilling or production operations.
TheA substantial portion of the Company’s operations are geographically concentrated in the North region, with that region comprising approximately 77%68% of the Company’s crude oil and natural gas production and approximately 86%77% of its crude oil and natural gas revenues for the year ended December 31, 2013. Additionally, as2015. The Company's principal producing properties in the North region are located in the Bakken field of North Dakota and Montana. As of December 31, 20132015, approximately 76%58% of the Company’s estimated proved reserves were located in the North region. In recent years, the Company has significantly expanded its activity in the South region with its discovery of the SCOOP play and its increased activity in the Northwest Cana and STACK plays. The South region comprised approximately 32% of the Company's crude oil and natural gas production, 23% of its crude oil and natural gas revenues, and 42% of its estimated proved reserves at December 31, 2015.
The Company has focused its operations on the exploration and development of crude oil since the 1980s. For the year ended December 31, 2013,2015, crude oil accounted for approximately 71%66% of the Company’s total production and approximately 87%85% of its crude oil and natural gas revenues. Crude oil represents approximately 68%57% of the Company's estimated proved reserves as of December 31, 2013.2015.
Basis of presentation of consolidated financial statements
The consolidated financial statements include the accounts of the Company and its subsidiaries, all of which are 100% owned, after all significant intercompany accounts and transactions have been eliminated upon consolidation.
Use of estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure and estimation of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. The most significant of the estimates and assumptions that affect reported results are the estimates of the Company’s crude oil and natural gas reserves, which are used to compute depreciation, depletion, amortization and impairment of proved crude oil and natural gas properties. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) necessary for a fair presentation in accordance with U.S. GAAP have been included in these consolidated financial statements.
Revenue recognition
Crude oil and natural gas sales result from interests owned by the Company in crude oil and natural gas properties. Sales of crude oil and natural gas produced from crude oil and natural gas operations are recognized when the product is delivered to the purchaser and title transfers to the purchaser. Payment is generally received one to three months after the sale has occurred. The Company uses the sales method of accounting for natural gas imbalances in those circumstances where it has under-produced or over-produced its ownership percentage in a property. Under this method, a receivable or payable is recognized only to the extent an imbalance cannot be recouped from the reserves in the underlying properties. The Company’s aggregate imbalance positions at December 31, 20132015 and 20122014 were not material.

78

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Cash and cash equivalents
The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. The Company maintains its cash and cash equivalents in accounts that may not be federally insured. As of December 31, 2013,2015, the Company had cash deposits in excess of federally insured amounts of approximately $28.0 million.$10.7 million. The Company has not experienced any losses in such accounts and believes it is not exposed to significant credit risk in this area.
Accounts receivable
The Company operates exclusively in crude oil and natural gas exploration and production related activities. Receivables arising from crude oil and natural gas sales and joint interest receivables are generally unsecured. Accounts receivable are due within 30 days and are considered delinquent after 60 days. The Company determines its allowance for doubtful accounts by

73

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


considering a number of factors, including the length of time accounts are past due, the Company’s history of losses, and the customer or working interest owner’s ability to pay. The Company writes off specific receivables when they become noncollectable and any payments subsequently received on those receivables are credited to the allowance for doubtful accounts. Write-offs of noncollectable receivables have historically not been material.
Concentration of credit risk
The Company is subject to credit risk resulting from the concentration of its crude oil and natural gas receivables with several significant purchasers. For the yearsyear ended December 31, 2013, 2012 and 2011,2015, sales to the Company’s largest purchaser accounted for approximately 15%, 21% and 41% of total crude oil and natural gas sales, respectively. Additionally, for the years ended December 31, 2013 and 2012 the Company’s second largest purchaser accounted for approximately 12% and 11%, respectively, of its total crude oil and natural gas sales. The Company's third largest purchaser accounted for approximately 11% of total crude oil and natural gas sales for the year ended December 31, 2013. No other purchasers accounted for more than 10% of the Company’s total crude oil and natural gas sales for 2011, 2012 and 2013.2015. The Company does not require collateral and does not believe the loss of any single purchaser would materially impact its operating results, as crude oil and natural gas are fungible products with well-established markets and numerous purchasers in the Company’s operatingvarious regions.
Inventories
Inventories are stated atInventory is comprised of crude oil held in storage or as line fill in pipelines and tubular goods and equipment to be used in the lower of cost or marketCompany's exploration and consist of the following:
  December 31,
In thousands 2013 2012
Tubular goods and equipment $11,139
 $13,590
Crude oil 43,301
 33,153
Total $54,440
 $46,743
development activities. Crude oil inventories are valued at the lower of cost or market primarily using the first-in, first-out inventory method. Crude oil inventories consistTubular goods and equipment are valued at the lower of cost or market, with cost determined primarily using a weighted average cost method applied to specific classes of inventory items.
The components of inventory as of December 31, 2015 and 2014 consisted of the following volumes:following:
  December 31,
MBbls 2013 2012
Crude oil line fill requirements 370
 391
Temporarily stored crude oil 344
 211
Total 714
 602
  December 31,
In thousands 2015 2014
Tubular goods and equipment $15,633
 $15,659
Crude oil 78,518
 86,520
Total $94,151
 $102,179
Crude oil and natural gas properties
The Company uses the successful efforts method of accounting for crude oil and natural gas properties whereby costs incurred to acquire mineral interests in crude oil and natural gas properties, to drill and equip exploratory wells that find proved reserves, to drill and equip development wells, and expenditures for enhanced recovery operations are capitalized. Geological and geophysical costs, seismic costs incurred for exploratory projects, lease rentals and costs associated with unsuccessful exploratory wells or projects are expensed as incurred. Costs of seismic studies that are utilized in development drilling within an area of proved reserves are capitalized as development costs. To the extent a seismic project covers areas of both developmental and exploratory drilling, those seismic costs are proportionately allocated between capitalized development costs and exploration expense. Maintenance, repairs and costs of injection are expensed as incurred, except that the costs of replacements or renewals that expand capacity or improve production are capitalized.
Under the successful efforts method of accounting, the Company capitalizes exploratory drilling costs on the balance sheet pending determination of whether the well has found proved reserves in economically producible quantities. The Company capitalizes costs associated with the acquisition or construction of support equipment and facilities with the drilling and development costs to which they relate. If proved reserves are found by an exploratory well, the associated capitalized costs become part of well equipment and facilities. However, if proved reserves are not found, the capitalized costs associated with the well are expensed, net of any salvage value. Total capitalized exploratory drilling costs pending the determination of proved reserves were $152.8 million and $92.7 million as of December 31, 2013 and 2012, respectively. As of December 31, 2013, exploratory drilling costs of $3.9 million, representing 3 wells, were suspended one year beyond the completion of drilling and are expected to be fully evaluated in 2014. Of the suspended costs, $0.5 million was incurred in 2013, $1.5 million was incurred in 2012, none in 2011 and $1.9 million was incurred in 2010.

7479

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Production expenses are those costs incurred by the Company to operate and maintain its crude oil and natural gas properties and associated equipment and facilities. Production expenses include labor costs to operate the Company’s properties, repairs and maintenance, waste water disposal costs, and materials and supplies utilized in the Company’s operations.
Service property and equipment
Service property and equipment consist primarily of automobiles and aircraft; machinery and equipment; gathering systems; storage tanks; office and computer equipment, software, furniture and fixtures, automobiles, machinery and equipment, office equipment, computer equipment and software,fixtures; and buildings and improvements. Major renewals and replacements are capitalized and stated at cost, while maintenance and repairs are expensed as incurred.
Depreciation and amortization of service property and equipment are provided in amounts sufficient to expense the cost of depreciable assets to operations over their estimated useful lives using the straight-line method. The estimated useful lives of service property and equipment are as follows: 
Service property and equipment
Useful Lives
In Years
FurnitureAutomobiles and fixturesaircraft10
Automobiles5-65-10
Machinery and equipment10-206-10
Gathering systems15-30
Storage tanks10-30
Office equipment,and computer equipment, software, furniture and softwarefixtures3-10
Enterprise resource planning software25
Buildings and improvements10-40
Depreciation, depletion and amortization
Depreciation, depletion and amortization of capitalized drilling and development costs of producing crude oil and natural gas properties, including related support equipment and facilities, are computed using the unit-of-production method on a field basis based on total estimated proved developed crude oil and natural gas reserves. Amortization of producing leaseholds is based on the unit-of-production method using total estimated proved reserves. In arriving at rates under the unit-of-production method, the quantities of recoverable crude oil and natural gas reserves are established based on estimates made by the Company’s internal geologists and engineers and external independent reserve engineers. Upon sale or retirement of properties, the cost and related accumulated depreciation, depletion and amortization are eliminated from the accounts and the resulting gain or loss, if any, is recognized. Unit of production rates are revised whenever there is an indication of a need, but at least in conjunction with semi-annual reserve reports. Revisions are accounted for prospectively as changes in accounting estimates.
Asset retirement obligations
The Company accounts for its asset retirement obligations by recording the fair value of a liability for an asset retirement obligation in the period in which a legal obligation is incurred and a corresponding increase in the carrying amount of the related long-lived asset. Subsequently, the capitalized asset retirement costs are charged to expense through the depreciation, depletion and amortization of crude oil and natural gas properties and the liability is accreted to the expected future abandonment cost ratably over the related asset’s life.

7580

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


The Company’s primary asset retirement obligations relate to future plugging and abandonment costs on its crude oil and natural gas properties and related facilities disposal. The following table summarizes the changes in the Company’s future abandonment liabilities from January 1, 20112013 through December 31, 2013:
2015: 
In thousands 2013 2012 2011 2015 2014 2013
Asset retirement obligations at January 1 $47,171
 $62,625
 $56,320
 $76,708
 $55,787
 $47,171
Accretion expense 2,767
 3,105
 3,163
 4,740
 3,366
 2,767
Revisions(1) 2,826
 (2,871) 1,947
 15,068
 9,916
 2,826
Plus: Additions for new assets 6,009
 6,679
 3,559
 7,404
 9,022
 6,009
Less: Plugging costs and sold assets (1) (2,986) (22,367) (2,364) (1,011) (1,383) (2,986)
Total asset retirement obligations at December 31 $55,787
 $47,171
 $62,625
 $102,909
 $76,708
 $55,787
Less: Current portion of asset retirement obligations at December 31 (2) 1,434
 2,227
 2,287
 1,658
 1,246
 1,434
Non-current portion of asset retirement obligations at December 31 $54,353
 $44,944
 $60,338
 $101,251
 $75,462
 $54,353
(1)
As a result of asset dispositions duringRevisions for the yearyears ended December 31, 2012,2015 and 2014 primarily represent an increase in the Company removed $20.0 millionpresent value of its previously recognized asset retirement obligations that were assumedliabilities from an acceleration in the estimated timing of abandonment prompted by decreases in commodity prices in 2015 and 2014 which shortened the buyers. See Note 13. Property Acquisitions and Dispositions for further discussion.
economic lives of certain producing properties.
(2)Balance is included in the caption "Accrued liabilities and other" in the consolidated balance sheets.
As of December 31, 20132015 and 2012,2014, net property and equipment on the consolidated balance sheets included $44.4$87.5 million and $36.6$64.7 million,, respectively, of net asset retirement costs.
Asset impairment
Proved crude oil and natural gas properties are reviewed for impairment on a field-by-field basis each quarter, or when events and circumstances indicate a possible decline in the recoverability of the carrying value of such field.quarter. The estimated future cash flows expected in connection with the field are compared to the carrying amount of the field to determine if the carrying amount is recoverable. If the carrying amount of the field exceeds its estimated undiscounted future cash flows, the carrying amount of the field is reduced to its estimated fair value. Due to the unavailability of relevant comparable market data, a discounted cash flow method is used to determine the fair value of proved properties. The discounted cash flow method estimates future cash flows based on management’s estimates of future crude oil and natural gas production, commodity prices based on commodity futures price strips, operating and development costs, and a risk-adjusted discount rate.
Non-producing crude oil and natural gas properties primarily consist of undeveloped leasehold costs and costs associated with the purchase of certain proved undeveloped reserves. Individually significantImpairment losses for non-producing properties if any, are assessed for impairment on a property-by-property basis and, if the assessment indicates an impairment, a loss is recognized by providing a valuation allowance consistent with the level at which impairment was assessed. For individually insignificant non-producing properties, impairment losses are recognized by amortizing the portion of the properties’ costs which management estimates will not be transferred to proved properties over the lives of the leases based on drilling plans, experience of successful drilling, and the average holding period. The Company’s impairment assessments are affected by economic factors such as the results of exploration activities, commodity price outlooks, anticipated drilling programs, remaining lease terms, and potential shifts in business strategy employed by management.
Debt issuance costs
Costs incurred in connection with the execution of the Company’s three-year term loan, note payable, and revolving credit facility and any amendments thereto are capitalized and amortized over the termterms of the facilityarrangements on a straight-line basis, the use of which approximates the effective interest method. Costs incurred upon the issuanceissuances of the 8 1/4% Senior Notes due 2019, the 7 3/8% Senior Notes due 2020, the 7 1/8% Senior Notes due 2021, the 5% Senior Notes due 2022 and the 4 1/2% Senior Notes due 2023Company's various senior notes (collectively, the “Notes”) were capitalized and are being amortized over the terms of the Notes using the effective interest method.
The Company had capitalized costs of $69.5$71.8 million and $55.3$76.1 million (net of accumulated amortization of $28.8$47.0 million and $20.2 million)$38.1 million) relating to its long-term debt at December 31, 20132015 and 2012,2014, respectively. The increase in 2013 resulted fromSee the capitalizationsubsequent heading titled New accounting pronouncements for a discussion of the presentation of these costs incurred in connection withon the Company’s April 2013 issuance of 4 1/2% Senior Notes due 2023 as discussed in consolidated balance sheets.Note 7. Long-Term Debt.
For the years ended December 31, 2013, 20122015, 2014 and 2011,2013, the Company recognized amortization expense associated with capitalized debt issuance costs of $8.6$8.9 million,, $5.6 $9.3 million and $3.3$8.6 million,, respectively, which are reflected in “Interest expense” in the consolidated statements of income.comprehensive income (loss).

7681

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Derivative instruments
The Company recognizes its derivative instruments on the balance sheet as either assets or liabilities measured at fair value with such amounts classified as current or long-term based on anticipatedcontractual settlement dates. Derivative assets and liabilities with the same counterparty that are subject to contractual terms which provide for net settlement are reported on a net basis in the consolidated balance sheets. The accounting for the changes in fair value of a derivative depends on the intended use of the derivative and resulting designation. The Company has not designated its derivative instruments as hedges for accounting purposes and, as a result, marks its derivative instruments to fair value and recognizes the changes in fair value in the consolidated statements of comprehensive income (loss) under the caption “Gain (loss) on derivative instruments, net.”
Fair value of financial instruments
The Company’s financial instruments consist primarily of cash, trade receivables, trade payables, derivative instruments and long-term debt. The carrying values of cash, trade receivables and trade payables are considered to be representative of their respective fair values due to the short term maturity of those instruments. The fair value of derivative contracts is based upon various factors, including commodity exchange prices, over-the-counter quotations, and, in the case of collars, volatility, the risk-free interest rate, and the time to expiration. See Note 5. Derivative Instruments for quantification of the fair value of the Company’s derivative instruments at December 31, 2013 and 2012.
Long-term debt consists of the Company’s Notes, its note payable, and borrowings on its credit facility. The fair values of the Notes are based on quoted market prices. The fair value of the note payable is determined using a discounted cash flow approach based on the interest rate and payment terms of the note payable and an assumed discount rate. The fair value of credit facility borrowings approximates carrying value based on borrowing rates available to the Company for bank loans with similar terms and maturities. See Note 6. Fair Value Measurements for a discussion of the methods used to determine fair value for the Company's financial instruments and the quantification of the fair value of the Company’sfor its derivatives and long-term debt obligations at December 31, 20132015 and 2012.2014.
Income taxes
Income taxes are accounted for using the liability method under which deferred income taxes are recognized for the future tax effects of temporary differences between financial statement carrying amounts and the tax basis of existing assets and liabilities using the enacted statutory tax rates in effect at year-end. The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date. The Company’s policy is to recognize penalties and interest related to unrecognized tax benefits, if any, in income tax expense. A valuation allowance for deferred tax assets is recorded when it is more likely than not that the benefit from the deferred tax asset will not be realized. The Company’s policy isCompany recorded valuation allowances of $13.5 million and $4.4 million for the years ended December 31, 2015 and 2014, respectively, against deferred tax assets associated with operating loss carryforwards generated by its Canadian subsidiary for which the Company does not expect to recognize penalties and interest related to unrecognized tax benefits, if any, in income tax expense.realize a benefit.
Earnings per share
Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of shares outstanding for the period. Diluted net income (loss) per share reflects the potential dilution of non-vested restricted stock awards, and stock options, which are calculated using the treasury stock method as if the awards and options were exercised.method. The following table presents the calculation of basic and diluted weighted average shares outstanding and net income (loss) per share for the years ended December 31, 2013, 20122015, 2014 and 2011. All stock options issued by2013.
  Year ended December 31,
In thousands, except per share data 2015 2014 2013
Income (loss) (numerator):      
Net income (loss) - basic and diluted $(353,668) $977,341
 $764,219
Weighted average shares (denominator):      
Weighted average shares - basic 369,540
 368,829
 368,150
Non-vested restricted stock (1) 
 1,929
 1,548
Weighted average shares - diluted 369,540
 370,758
 369,698
Net income (loss) per share:      
Basic $(0.96) $2.65
 $2.08
Diluted $(0.96) $2.64
 $2.07
(1)During the year ended December 31, 2015, the Company had a net loss and therefore the potential dilutive effect of approximately 1,567,000 weighted average restricted shares were not included in the calculation of diluted net loss per share for 2015 because to do so would have been anti-dilutive to the computations.
Foreign currency translation
In 2014, the Company initiated exploratory drilling activities in prior periods had been exercised or had expiredCanada through a 100%-owned Canadian subsidiary. The Company has designated the Canadian dollar as the functional currency for its Canadian operations. Adjustments resulting from the process of March 31, 2012.
  Year ended December 31,
In thousands, except per share data 2013 2012 2011
Income (numerator):      
Net income - basic and diluted $764,219
 $739,385
 $429,072
Weighted average shares (denominator):      
Weighted average shares - basic 184,075
 181,340
 177,590
Non-vested restricted stock 774
 490
 544
Stock options 
 16
 96
Weighted average shares - diluted 184,849
 181,846
 178,230
Net income per share:      
Basic $4.15
 $4.08
 $2.42
Diluted $4.13
 $4.07
 $2.41
translating foreign functional currency financial statements into U.S. dollars are included in "Accumulated other comprehensive loss" within shareholders’ equity on the consolidated balance sheets.

7782

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Adoption of newNew accounting standardpronouncements
In December 2011,April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”("ASU") No. 2011-11,2015-03, Balance Sheet (Topic 210)–Disclosures about Offsetting Assets and LiabilitiesInterest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). The new standard requires debt issuance costs related to a recognized term debt liability, such as the Company's senior notes, three-year term loan and note payable, be presented in the balance sheet as a direct deduction from the carrying amount of that term debt liability, consistent with the presentation of a debt discount. Under previous guidance, debt issuance costs were required to be presented in the balance sheet as an entity to disclose information about offsetting arrangements to enable financial statement users to understandasset. The new standard does not affect the effectexisting recognition and measurement guidance for debt issuance costs. The new standard is effective for annual and interim periods beginning after December 15, 2015, with early adoption permitted.
The Company early adopted ASU 2015-03 as of netting arrangementsJune 30, 2015 on an entity’s financial position. The disclosures are required for recognized financial instruments and derivative instruments that are subject to offsetting or are subject to master netting arrangements irrespective of whether they are offset. The disclosure requirements became effective January 1, 2013 and must be applied retrospectivelya retrospective basis to all prior balance sheet periods presentedpresented. As a result of the adoption, the Company reclassified unamortized debt issuance costs associated with its senior notes and note payable, which totaled $65.7 million and $69.0 million as of June 30, 2015 and December 31, 2014, respectively, from "Other noncurrent assets" to a reduction of "Long-term debt, net of current portion" on the consolidated balance sheet. The Company adopted the provisionssheets. Unamortized debt issuance costs reflected as a reduction of long-term debt subsequently totaled $64.0 million as of December 31, 2015, inclusive of costs incurred upon execution of the Company's new standard on January 1, 2013 and has included the required disclosuresterm loan in November 2015 as discussed in Note 5. Derivative Instruments7. Long-Term Debt. Adoption of the new standard required additional footnote disclosures forASU 2015-03 had no impact on the Company's derivative instrumentscurrent and did not have an impact on its financial position,previously reported shareholders' equity, results of operations, or cash flows. The December 31, 2014 carrying amounts for the Company's senior notes and note payable presented throughout this report on Form 10-K have been adjusted to reflect the retroactive adoption of ASU 2015-03. Unamortized debt issuance costs associated with the Company's revolving credit facility, which amounted to $7.8 million and $7.0 million as of December 31, 2015 and 2014, respectively, were not reclassified and remain reflected in "Other noncurrent assets" on the consolidated balance sheets.
In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which requires entities with a classified balance sheet to present all deferred tax assets and deferred tax liabilities as noncurrent instead of separating deferred taxes into current and noncurrent amounts. The standard will be effective for public companies for annual and interim periods beginning after December 15, 2016, with early adoption permitted. The Company early adopted ASU 2015-17 as of December 31, 2015 on a retrospective basis to all prior balance sheet periods presented. As a result of the adoption, the Company reclassified $36.2 million and $145.3 million as of December 31, 2015 and 2014, respectively, from "Accrued liabilities and other" to “Deferred income tax liabilities, net” on the consolidated balance sheets. Adoption of ASU 2015-17 had no impact on the Company's current and previously reported shareholders' equity, results of operations, or cash flows. The affected prior period deferred income tax account balances presented throughout this report on Form 10-K have been adjusted to reflect the retroactive adoption of ASU 2015-17.
Note 2. Supplemental Cash Flow Information
The following table discloses supplemental cash flow information about cash paid for interest and income taxes.tax payments and refunds. Also disclosed is information about investing activities that affects recognized assets and liabilities but does not result in cash receipts or payments.
 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2011 2015 2014 2013
Supplemental cash flow information:            
Cash paid for interest $209,815
 $102,043
 $70,088
 $301,743
 $267,384
 $209,815
Cash paid for income taxes 29,017
 829
 16,030
 30
 53,457
 29,017
Cash received for income tax refunds (174) (13,866) (116) 61,403
 7
 174
Non-cash investing activities:            
Increase in accrued capital expenditures 89,482
 49,039
 173,591
Acquisition of assets through issuance of common stock (Note 14) 
 176,563
 
Increase (decrease) in accrued capital expenditures (519,949) 290,782
 89,482
Asset retirement obligation additions and revisions, net 8,835
 3,808
 5,506
 22,472
 18,938
 8,835

83

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 3. Net Property and Equipment
Net property and equipment includes the following at December 31, 20132015 and 2012:2014:
  December 31, December 31,
In thousands  2013  2012 2015 2014
Proved crude oil and natural gas properties $12,423,878
 $8,980,505
 $19,520,724
 $17,045,967
Unproved crude oil and natural gas properties 1,181,268
 1,073,944
 682,988
 966,080
Service properties, equipment and other  236,233
  170,763
 307,059
 274,584
Total property and equipment 13,841,379
 10,225,212
 20,510,771
 18,286,631
Accumulated depreciation, depletion and amortization  (3,120,107)  (2,119,943) (6,447,443) (4,650,779)
Net property and equipment $10,721,272
 $8,105,269
 $14,063,328
 $13,635,852
 

78

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 4. Accrued Liabilities and Other
Accrued liabilities and other includes the following at December 31, 20132015 and 2012:
2014:
  December 31, December 31,
In thousands  2013  2012 2015 2014
Prepaid advances from joint interest owners $57,196
 $30,434
 $49,917
 $115,687
Accrued compensation 41,757
 27,797
 40,060
 39,848
Accrued production taxes, ad valorem taxes and other non-income taxes 35,900
 33,466
 21,678
 36,550
Accrued income taxes 
 10,455
Accrued interest 61,216
 46,973
 62,058
 60,861
Current portion of asset retirement obligations 1,434
 2,227
 1,658
 1,246
Other  610
  4,329
 1,576
 4,965
Accrued liabilities and other $198,113
 $155,681
 $176,947
 $259,157
Note 5. Derivative Instruments
The Company recognizes all derivative instruments on the balance sheet as either assets or liabilities measured at fair value. The Company has not designated its derivative instruments as hedges for accounting purposes and, as a result, marks its derivative instruments to fair value and recognizes the changes in fair value in the consolidated statements of comprehensive income (loss) under the caption “Gain (loss) on derivative instruments, net.”
The Company has utilizedmay utilize swap and collar derivative contracts to economically hedge against the variability in cash flows associated with the forecasted sale of future crude oil and natural gas production. While the use of these derivative instruments limits the downside risk of adverse price movements, their use also limits future revenues from upward price movements.
With respect to a fixed price swap contract, the counterparty is required to make a payment to the Company if the settlement price for any settlement period is less than the swap price, and the Company is required to make a payment to the counterparty if the settlement price for any settlement period is greater than the swap price. For a collar contract, the counterparty is required to make a payment to the Company if the settlement price for any settlement period is below the floor price, and the Company is required to make a payment to the counterparty if the settlement price for any settlement period is above the ceiling price, and neitherprice. Neither party is required to make a payment to the other party if the settlement price for any settlement period is between the floor price and the ceiling price.
The Company's derivative contracts are settled based upon reported settlement prices on commodity exchanges, with crude oil derivative settlements based on NYMEX West Texas Intermediate ("WTI") pricing or Inter-Continental Exchange ("ICE") pricing for Brent crude oil and natural gas derivative settlements based on NYMEX Henry Hub pricing. The estimated fair value of derivative contracts is based upon various factors, including commodity exchange prices, over-the-counter quotations, and, in the case of collars and written call options, volatility, the risk-free interest rate, and the time to expiration. The calculation of the fair value of collars and written call options requires the use of an option-pricing model. See Note 6. Fair Value Measurements.
At December 31, 2013, the Company had outstanding derivative contracts with respect to future production as set forth in the tables below.
Crude Oil–NYMEX WTI   Swaps Weighted Average Price
Period and Type of Contract Bbls
January 2014 - December 2014    
Swaps - WTI 10,851,250
 $96.50

7984

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements



   
Swaps
Weighted
Average
Price
 Collars
Crude Oil–ICE Brent Bbls Floors Ceilings
Period and Type of Contract Range 
Weighted
Average
Price
 Range 
Weighted
Average
Price
January 2014 - December 2014            
Swaps - ICE Brent 17,028,000
 $103.17
        
Collars - ICE Brent 2,190,000
   $90.00 - $95.00
 $90.83
 $104.70 - $108.85
 $107.13
January 2015 - December 2015            
Swaps - ICE Brent 2,737,500
 $99.15
        
Collars - ICE Brent 730,000
 

 $95.00
 $95.00
 $107.40
 $107.40
At December 31, 2015, the Company had outstanding derivative contracts with respect to future production as set forth in the tables below. The hedged volumes reflected below represent an aggregation of multiple derivative contracts that have varying durations and may not be realized on a ratable basis over a calendar year.
Natural Gas–NYMEX Henry Hub MMBtus 
Swaps
Weighted
Average
Price
  
Period and Type of Contract 
January 2014 - December 2014    
Swaps - Henry Hub 64,250,000
 $4.19
January 2015 - March 2015    
Swaps - Henry Hub 1,800,000
 $4.27
Crude Oil - ICE Brent    
     
Period and Type of Contract Bbls Ceiling Price
January 2016 - December 2016    
Written call options - ICE Brent (1) 1,464,000
 $107.70
(1)Written call options represent the ceiling positions remaining from the Company's previous crude oil collar contracts. The floor positions of the collars were liquidated in the fourth quarter of 2014. For these written call options, the Company is required to make a payment to the counterparty if the settlement price for any settlement period is above the ceiling price.

Natural Gas - Henry Hub   Swaps Weighted Average Price Floors Ceilings
       Weighted Average Price   Weighted Average Price
Period and Type of Contract MMBtus  Range  Range 
January 2016 - December 2016            
Swaps - Henry Hub 133,710,000
 $3.17
        
January 2017 - December 2017            
Swaps - Henry Hub 25,550,000
 $3.35
        
Collars - Henry Hub 65,700,000
   $2.40 - $3.00 $2.47
 $2.92 - $3.88 $3.08
Derivative gains and losses
The following table presents cash settlements on matured or liquidated derivative instruments and non-cash gains and losses on open derivative instruments for the periods presented. Cash receipts and payments below reflect the gainproceeds received upon early liquidation of derivative positions and gains or losslosses on derivative contracts which matured during the period, calculated as the difference between the contract price and the market settlement price of matured contracts. Non-cash gains and losses below represent the change in fair value of derivative instruments which continue to be held at period end and the reversal of previously recognized non-cash gains or losses on derivative contracts that matured or were liquidated during the period.
 Year ended December 31, Year ended December 31,
In thousands 2013
2012
2011 2015 2014 2013
Cash received (paid) on derivatives:            
Crude oil fixed price swaps(1) $(54,289) $(40,238) $(14,900) $
 $331,591
 $(54,289)
Crude oil collars(1) (16,867) (15,341) (56,511) 
 65,310
 (16,867)
Natural gas fixed price swaps 9,601
 9,858
 37,305
 39,670
 (11,551) 9,601
Cash paid on derivatives, net $(61,555) $(45,721) $(34,106)
Natural gas collars 29,883
 
 
Cash received (paid) on derivatives, net 69,553
 385,350
 (61,555)
Non-cash gain (loss) on derivatives:            
Crude oil fixed price swaps $(117,580) $142,567
 $(23,486) 
 84,792
 (117,580)
Crude oil collars (8,587) 59,911
 42,239
 
 1,121
 (8,587)
Crude oil written call options 4,715
 3,981
 
Natural gas fixed price swaps (4,029) (2,741) (14,696) 41,828
 62,699
 (4,029)
Natural gas collars (25,011) 21,816
 
Non-cash gain (loss) on derivatives, net $(130,196) $199,737
 $4,057
 21,532
 174,409
 (130,196)
Gain (loss) on derivative instruments, net $(191,751) $154,016
 $(30,049) $91,085
 $559,759
 $(191,751)

Balance sheet offsetting of derivative assets and liabilities
In December 2011, the FASB issued ASU No. 2011-11, Balance Sheet (Topic 210)-Disclosures about Offsetting Assets and Liabilities, which requires an entity to disclose information about offsetting arrangements to enable financial statement users to understand the effect of netting arrangements on an entity's financial position. The Company adopted the provisions of the new standard on January 1, 2013 as required and has provided the applicable disclosures below with respect to its derivative instruments.
(1)Net cash receipts for crude oil swaps and collars for the year ended December 31, 2014 include $433 million of proceeds received from crude oil derivative contracts that were settled in the fourth quarter of 2014 prior to their contractual maturities. Of the proceeds, $373 million related to crude oil swap liquidations and $60 million related to crude oil collar liquidations.

8085

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


All
Balance sheet offsetting of thederivative assets and liabilities
The Company’s derivative contracts are carriedrecorded at their fair value in the consolidated balance sheets under the captions “Derivative assets”, “Noncurrent derivative assets”, “Derivative liabilities”, and “Noncurrent derivative liabilities”. Derivative assets and liabilities with the same counterparty that are subject to contractual terms which provide for net settlement are reported on a net basis in the consolidated balance sheets.
The following tablestable present the gross amounts of recognized derivative assets and liabilities, the amounts offset under netting arrangements with counterparties, and the resulting net amounts presented in the consolidated balance sheets for the periods presented, all at fair value.
 December 31, 2013 December 31, 2012 December 31,
In thousands Gross
amounts of
recognized
assets
 Gross amounts
offset on
balance sheet
 Net amounts of
assets on
balance sheet
 Gross
amounts of
recognized
assets
 Gross amounts
offset on
balance sheet
 Net amounts of
assets on
balance sheet
 2015 2014
Commodity derivative assets $4,213
 $(597) $3,616
 $86,506
 $(35,886) $50,620
            
 December 31, 2013 December 31, 2012
In thousands Gross
amounts of
recognized
liabilities
 Gross amounts
offset on
balance sheet         
 Net amounts of
liabilities on
balance sheet          
 Gross
amounts of
recognized
liabilities
 Gross amounts
offset on
balance sheet        
 Net amounts of
liabilities on
balance sheet          
Commodity derivative liabilities $(125,709) $27,345
 $(98,364) $(16,241) $1,069
 $(15,172)
Commodity derivative assets:    
Gross amounts of recognized assets $120,385
 $84,431
Gross amounts offset on balance sheet (11,903) (16)
Net amounts of assets on balance sheet 108,482
 84,415
Commodity derivative liabilities:    
Gross amounts of recognized liabilities (19,192) (4,770)
Gross amounts offset on balance sheet 11,903
 16
Net amounts of liabilities on balance sheet $(7,289) $(4,754)
The following table reconciles the net amounts disclosed above to the individual financial statement line items in the consolidated balance sheets. 
 December 31,
In thousands December 31, 2013 December 31, 2012 2015 2014
Derivative assets $3,616
 $18,389
 $93,922
 $52,423
Noncurrent derivative assets 
 32,231
 14,560
 31,992
Net amounts of assets on balance sheet 3,616
 50,620
 108,482
 84,415
Derivative liabilities (90,535) (12,999) (3,583) (1,645)
Noncurrent derivative liabilities (7,829) (2,173) (3,706) (3,109)
Net amounts of liabilities on balance sheet (98,364) (15,172) (7,289) (4,754)
Total derivative assets (liabilities), net $(94,748) $35,448
Total derivative assets, net $101,193
 $79,661
Note 6. Fair Value Measurements
The Company follows a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy categorizes assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. The three levels are defined as follows:
Level 1: Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the reporting date.
Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data. These are inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date.
Level 3: Unobservable inputs that are not corroborated by market data and may be used with internally developed methodologies that result in management’s best estimate of fair value.
A financial instrument’s categorization within the hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Level 1 inputs are given the highest priority in the fair value hierarchy while Level 3 inputs are given the lowest priority. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within the levels of the hierarchy. As Level 1 inputs generally provide the most reliable evidence of fair value, the Company uses Level 1 inputs when available. The Company’s policy is to

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recognize transfers between the hierarchy levels as of the beginning of the reporting period in which the event or change in circumstances caused the transfer.

81

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Assets and liabilities measured at fair value on a recurring basis
The Company's derivative instruments are reported at fair value on a recurring basis. In determining the fair values of fixed price swaps, a discounted cash flow method is used due to the unavailability of relevant comparable market data for the Company’s exact contracts. The discounted cash flow method estimates future cash flows based on quoted market prices for forward commodity prices and a risk-adjusted discount rate. The fair values of fixed price swaps are calculated mainly using significant observable inputs (Level 2). Calculation of the fair values of collar contractscollars and written call options requires the use of an industry-standard option pricing model that considers various inputs including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. These assumptions are observable in the marketplace or can be corroborated by active markets or broker quotes and are therefore designated as Level 2 within the valuation hierarchy. The Company’s calculation of fair value for each of its derivative positions is compared to the counterparty valuation for reasonableness.
The following tables summarize the valuation of financial instruments by pricing levels that were accounted for at fair value on a recurring basis as of December 31, 20132015 and 2012.2014.
 Fair value measurements at December 31, 2015 using:  
In thousands Fair value measurements at December 31, 2013 using:   Level 1 Level 2 Level 3 Total
Description Level 1 Level 2 Level 3 Total
Derivative assets (liabilities):    
Fixed price swaps $
 $(84,893) $
 $(84,893) $
 $104,426
 $
 $104,426
Collars 
 (9,855) 
 (9,855) 
 (3,195) 
 (3,195)
Written call options 
 (38) 
 (38)
Total $
 $(94,748) $
 $(94,748) $
 $101,193
 $
 $101,193
 
 Fair value measurements at December 31, 2014 using:  
In thousands Fair value measurements at December 31, 2012 using:  
 Level 1 Level 2 Level 3 Total
Description Level 1 Level 2 Level 3 Total
Derivative assets (liabilities):    
Fixed price swaps $
 $36,716
 $
 $36,716
 $
 $62,599
 $
 $62,599
Collars 
 (1,268) 
 (1,268) 
 21,816
 
 21,816
Written call options 
 (4,754) $
 (4,754)
Total $
 $35,448
 $
 $35,448
 $
 $79,661
 $
 $79,661
 
Assets measured at fair value on a nonrecurring basis
Certain assets are reported at fair value on a nonrecurring basis in the consolidated financial statements. The following methods and assumptions were used to estimate the fair values for those assets.
Asset impairments – Proved crude oil and natural gas properties are reviewed for impairment on a field-by-field basis each quarter, or when events and circumstances indicate a possible decline in the recoverability of the carrying value of such field.quarter. The estimated future cash flows expected in connection with the field are compared to the carrying amount of the field to determine if the carrying amount is recoverable. If the carrying amount of the field exceeds its estimated undiscounted future cash flows, the carrying amount of the field is reduced to its estimated fair value. Due to the unavailability of relevant comparable market data, a discounted cash flow method is used to determine the fair value of proved properties. The discounted cash flow method estimates future cash flows based on management’sthe Company's estimates of future crude oil and natural gas production, commodity prices based on commodity futures price strips, operating and development costs, and a risk-adjusted discount rate. The fair value of proved crude oil and natural gas properties is calculated using significant unobservable inputs (Level 3). The following table sets forth quantitative information about the significant unobservable inputs used by the Company to calculate the fair value of proved crude oil and natural gas properties using a discounted cash flow method.

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Notes to Consolidated Financial Statements


 
Unobservable Input Assumption
Future production Future production estimates for each property
Forward commodity prices Forward NYMEX swap prices through 20182020 (adjusted for differentials), escalating 3% per year thereafter
Operating and development costs Estimated costs for the current year, escalating 3% per year thereafter
Productive life of field Ranging from 0 to 5034 years
Discount rate 10%

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Unobservable inputs to the fair value assessment are reviewed quarterly and are revised as warranted based on a number of factors, including reservoir performance, new drilling, crude oil and natural gas prices, changes in costs, technological advances, new geological or geophysical data, or other economic factors. Fair value measurements of proved properties are reviewed and approved by certain members of the Company’s management.
Impairments of proved properties amounted to $51.8$138.9 million for the year ended December 31, 2013. Such2015 resulting from declines in commodity prices that indicated the carrying amounts for certain fields were not recoverable. The 2015 impairments primarily reflectedreflect fair value adjustments made for certainprimarily concentrated in an emerging area with minimal production and costly reserve additions ($42.5 million), the Medicine Pole Hills units ($32.5 million), the Buffalo Red River units ($26.3 million), non-Bakken areas of North Dakota and Montana ($8.2 million), Wyoming properties ($17.9 million), and various legacy areas in the Niobrara play in Colorado and Wyoming driven by uneconomic well results.South region ($11.4 million). The impaired properties were written down to their estimated fair value totaling approximately $21.2 million.$59.9 million.
Certain unproved crude oil and natural gas properties were impaired during the years ended December 31, 20132015, 2014, and 2012, primarily2013, reflecting recurring amortization of undeveloped leasehold costs on properties that managementthe Company expects will not be transferred to proved properties over the lives of the leases based on drilling plans, experience of successful drilling, and the average holding period. Additionally, undeveloped leasehold costs on certain properties in the Niobrara play were individually assessed for impairment in the 2013 fourth quarter based on indicators of impairment and were written down to fair value of $14.9 million, which resulted in $8.4 million of impairment charges being recognized in addition to the recurring amortization described above.
The following table sets forth the non-cash impairments of both proved and unproved properties for the indicated periods. Proved and unproved property impairments are recorded under the caption “Property impairments” in the consolidated statements of income.comprehensive income (loss).
 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2011 2015 2014 2013
Proved property impairments $51,805
 $4,332
 $16,107
 $138,878
 $324,302
 $51,805
Unproved property impairments 168,703
 117,942
 92,351
 263,253
 292,586
 168,703
Total $220,508
 $122,274
 $108,458
 $402,131
 $616,888
 $220,508
Financial instruments not recorded at fair value
The following table sets forth the fair values of financial instruments that are not recorded at fair value in the consolidated financial statements.
 December 31, 2013 December 31, 2012 December 31, 2015 December 31, 2014
In thousands Carrying Amount Fair Value Carrying Amount Fair Value Carrying Amount Fair Value Carrying Amount Fair Value
Debt:                
Credit facility $275,000
 $275,000
 $595,000
 $595,000
 $853,000
 $853,000
 $165,000
 $165,000
Term loan 498,274
 500,000
 
 
Note payable 18,470
 16,500
 20,421
 20,148
 14,309
 12,500
 16,375
 14,900
8 1/4% Senior Notes due 2019 298,305
 327,800
 298,085
 339,000
7 3/8% Senior Notes due 2020 198,695
 223,700
 198,552
 226,833
7 1/8% Senior Notes due 2021 400,000
 450,300
 400,000
 454,333
7.375% Senior Notes due 2020 196,574
 179,200
 195,997
 213,000
7.125% Senior Notes due 2021 395,365
 388,300
 394,668
 421,000
5% Senior Notes due 2022 2,025,362
 2,063,300
 2,027,663
 2,165,833
 1,996,831
 1,480,400
 1,996,507
 1,857,900
4 1/2% Senior Notes due 2023 1,500,000
 1,519,400
 
 
4.5% Senior Notes due 2023 1,482,451
 1,061,000
 1,480,479
 1,372,800
3.8% Senior Notes due 2024 989,932
 700,300
 988,940
 868,700
4.9% Senior Notes due 2044 691,052
 430,500
 690,912
 572,400
Total debt $4,715,832
 $4,876,000
 $3,539,721
 $3,801,147
 $7,117,788
 $5,605,200
 $5,928,878
 $5,485,700

88

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


The fair valuevalues of credit facility borrowings approximatesand the term loan approximate carrying value based on borrowing rates available to the Company for bank loans with similar terms and maturities and isare classified as Level 2 in the fair value hierarchy.
The fair value of the note payable is determined using a discounted cash flow approach based on the interest rate and payment terms of the note payable and an assumed discount rate. The fair value of the note payable is significantly influenced by the discount rate assumption, which is derived by the Company and is unobservable. Accordingly, the fair value of the note payable is classified as Level 3 in the fair value hierarchy.
The fair values of the 8 1/4% Senior Notes due 2019 (“2019 Notes”), the 7 3/8%7.375% Senior Notes due 2020 (“2020 Notes”), the 7 1/8%7.125% Senior Notes due 2021 (“2021 Notes”), the 5% Senior Notes due 2022 (“2022 Notes”), and the 4 1/2%4.5% Senior Notes due 2023 ("(“2023 Notes"Notes”), the 3.8% Senior Notes due 2024 (“2024 Notes”), and the 4.9% Senior Notes due 2044 (“2044 Notes”) are based on quoted market prices and, accordingly, are classified as Level 1 in the fair value hierarchy.

83

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The carrying values of all classes of cash and cash equivalents, trade receivables, and trade payables are considered to be representative of their respective fair values due to the short term maturities of those instruments.
Note 7. Long-Term Debt
Long-term debt, net of unamortized discounts, premiums, and debt issuance costs totaling $49.6 million and $52.6 million at December 31, 2015 and 2014, respectively, consists of the following at December 31, 2013following. See Note 1. Organization and 2012:Summary of Significant Accounting Policies—New accounting pronouncements for a discussion of the impact on long-term debt from the Company's adoption of ASU 2015-03.
 December 31, December 31,
In thousands 2013 2012 2015 2014
Credit facility $275,000
 $595,000
 $853,000
 $165,000
Term loan 498,274
 
Note payable 18,470
 20,421
 14,309
 16,375
8 1/4% Senior Notes due 2019 (1) 298,305
 298,085
7 3/8% Senior Notes due 2020 (2) 198,695
 198,552
7 1/8% Senior Notes due 2021 (3) 400,000
 400,000
7.375% Senior Notes due 2020 196,574
 195,997
7.125% Senior Notes due 2021 395,365
 394,668
5% Senior Notes due 2022 (4) 2,025,362
 2,027,663
 1,996,831
 1,996,507
4 1/2% Senior Notes due 2023 (3) 1,500,000
 
4.5% Senior Notes due 2023 1,482,451
 1,480,479
3.8% Senior Notes due 2024 989,932
 988,940
4.9% Senior Notes due 2044 691,052
 690,912
Total debt 4,715,832
 3,539,721
 7,117,788
 5,928,878
Less: Current portion of long-term debt (2,011) (1,950) 2,144
 2,078
Long-term debt, net of current portion $4,713,821
 $3,537,771
 $7,115,644
 $5,926,800
(1)
The carrying amount is net of unamortized discounts of $1.7 million and $1.9 million at December 31, 2013 and 2012, respectively.
(2)
The carrying amount is net of unamortized discounts of $1.3 million and $1.4 million at December 31, 2013 and 2012, respectively.
(3)
These notes were sold at par and are recorded at 100% of face value.
(4)The carrying amount includes an unamortized premium of $25.4 million and $27.7 million at December 31, 2013 and 2012, respectively.

CreditRevolving credit facility
The Company has aan unsecured revolving credit facility, maturing on July 1, 2015,May 16, 2019, with aggregate lender commitments totaling $1.5$2.75 billion at December 31, 2015, which canmay be increased up to $2.5a total of $4.0 billion under the terms of the facility. In November 2013, following an upgrade by Standard & Poor’s Rating Services (“S&P”), as permitted by the credit facility terms,upon agreement between the Company provided the lenders under its credit facility notice of its intention to elect an Additional Covenant Period (as defined in the credit facility). The election of an Additional Covenant Period means that the credit facility is not currently subject to a borrowing base. The election was made in order to facilitate the release of collateral consisting of oil and gas properties securing obligations under the credit facility. On December 11, 2013, the Company delivered notice to the credit facility lenders confirming it had satisfied all conditions for releasing the collateral and the release of such collateral became effective as of December 12, 2013. On December 13, 2013, the Company's credit rating was upgraded by Moody's Investor Services, Inc (“Moody’s”). As a result of the second upgrade, the Company is not currently required to: (i) comply with certain reporting requirements; and (ii) maintain a ratio of the present value of oil and gas properties to total funded debt of not less than 1.5 to 1.0, as set forth in the credit facility.participating lenders.
The Company had $275$853 million and $595$165 million of outstanding borrowings on its credit facility at December 31, 20132015 and 2012,2014, respectively. Borrowings underbear interest at market-based interest rates plus a margin that is based on the facilityterms of the borrowing and the credit ratings assigned to the Company's senior, unsecured, long-term indebtedness. The weighted-average interest rate on outstanding borrowings at December 31, 2013 bear interest at a rate per annum equal to the London Interbank Offered Rate (LIBOR) for one, two, three or six months, as elected by the Company, plus a margin of 150 basis points, or the lead bank’s reference rate (prime) plus a margin 50 basis points.2015 was 1.9%.
The Company had approximately $1.2$1.9 billion of unused commitments (after considering outstanding borrowings and letters of credit) underborrowing availability on its credit facility at December 31, 20132015 and incursincurred commitment fees based on its assigned credit rating at that date of 0.25%0.225% per annum of the daily average amount of unused borrowing availability. availability under its credit facility.
The revolving credit agreementfacility contains certain restrictive covenants including a requirement that the Company maintain a current ratio of not less than 1.0 to 1.0 and a ratio of total fundedconsolidated net debt to EBITDAXtotal capitalization ratio of no greater than 4.00.65 to 1.0. As defined by the credit facility, the current1.00. This ratio represents the ratio of current assetsnet debt (total debt less cash and cash equivalents) divided by the sum of net debt plus total shareholders' equity plus, to current liabilities, inclusive of available borrowing capacity under the credit facility and exclusive of current balances associated with derivative contracts and asset retirement obligations. EBITDAX represents earnings before interest expense, income taxes, depreciation, depletion, amortization and accretion, property impairments, exploration expenses, non-cash gains and lossesextent resulting from the requirements of accounting for derivatives, and non-cash equity compensation expense. The total funded debt to EBITDAXin

8489

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


ratio representsa reduction of total shareholders' equity, the sumamount of outstanding borrowings and lettersany non-cash impairment charges incurred, net of credit on the credit facility plus the Company’s note payable and senior note obligations, divided by total EBITDAX for the most recent four quarters.any tax effect, after June 30, 2014. The Company was in compliance with these covenantsthis covenant at December 31, 2013.

2015.
Senior notes
In April 2013, the Company issued $1.5 billion of 4 1/2% Senior Notes due 2023 and received net proceeds of approximately $1.48 billion after deducting the initial purchasers' fees. The Company used the net proceeds from the offering to repay all borrowings then outstanding under its credit facility, which had a balance prior to payoff of approximately $1.04 billion, to fund a portion of its 2013 capital budget, and for general corporate purposes.
The following table summarizes the face values, maturity dates, semi-annual interest payment dates, and optional redemption periods related to the Company’s outstanding senior note obligations.obligations at December 31, 2015.
 
2019 Notes2020 Notes2021 Notes2022 Notes2023 Notes
Maturity dateOct 1, 2019Oct 1, 2020April 1, 2021Sep 15, 2022April 15, 2023
Interest payment datesApril 1, Oct. 1April 1, Oct. 1April 1, Oct. 1March 15, Sept. 15April 15, Oct. 15
Call premium redemption period (1)Oct 1, 2014Oct 1, 2015April 1, 2016March 15, 2017n/a
Make-whole redemption period (2)Oct 1, 2014Oct 1, 2015April 1, 2016March 15, 2017Jan 15, 2023
Equity offering redemption period (3)April 1, 2014March 15, 2015n/a
   2020 Notes  2021 Notes  2022 Notes  2023 Notes  2024 Notes 2044 Notes
Face value (in thousands) $200,000 $400,000 $2,000,000 $1,500,000 $1,000,000 $700,000
Maturity date  Oct 1, 2020  April 1, 2021  Sep 15, 2022  April 15, 2023  June 1, 2024 June 1, 2044
Interest payment dates  April 1, Oct 1  April 1, Oct 1  March 15,  Sep 15  April 15, Oct 15  June 1, Dec 1 June 1, Dec 1
Call premium redemption period (1)  Oct 1, 2015  April 1, 2016  March 15, 2017     
Make-whole redemption period (2)  Oct 1, 2015  April 1, 2016  March 15, 2017  Jan 15, 2023  Mar 1, 2024 Dec 1, 2043
(1)On or after these dates, the Company has the option to redeem all or a portion of its senior notes of the applicable series at the decreasing redemption prices specified in the respective senior note indentures (together, the “Indentures”) plus any accrued and unpaid interest to the date of redemption.
(2)At any time prior to these dates, the Company has the option to redeem all or a portion of its senior notes of the applicable series at the “make-whole” redemption prices or amounts specified in the Indentures plus any accrued and unpaid interest to the date of redemption.
(3)
At any time prior to these dates, the Company may redeem up to 35% of the principal amount of its senior notes under certain circumstances with the net cash proceeds from one or more equity offerings at the redemption prices specified in the Indentures plus any accrued and unpaid interest to the date of redemption. The optional redemption period for the 2019 Notes and 2020 Notes using equity offering proceeds expired on October 1, 2012 and October 1, 2013, respectively.
The Company’s senior notes are not subject to any mandatory redemption or sinking fund requirements.
The Indentures, excluding the indentureindentures governing the 2023 Notes, contain certain restrictions on the Company’s ability to incur additional debt, pay dividends on common stock, make certain investments, create certain liens on assets, engage in certain transactions with affiliates, transfer or sell certain assets, consolidate or merge, or sell substantially all of the Company’s assets. However, as a result of the increase in credit ratings assigned to the Company's senior unsecured debt and release of credit facility collateral in December 2013 as described above, certain of the restrictive covenants are not currently applicable, including those limiting the Company’s ability to incur additional debt, pay dividends, make certain investments, engage in certain affiliate transactions, and sell certain assets, among others. In the event the Company's credit ratings are reduced below BBB- by S&P or Baa3 by Moody's or collateral is reinstated under the credit facility, such covenants would be restored. The indenture governing the 2023 Notes is less restrictive and containsnotes contain covenants that, among others, limit the Company's ability to create liens securing certain indebtedness, enter into certain sale-leaseback transactions, and consolidate, merge or transfer certain assets.
The senior note covenants are subject to a number of important exceptions and qualifications. The Company was in compliance with these covenants at December 31, 2013.2015. Two of the Company’s subsidiaries, Banner Pipeline Company, L.L.C. and CLR Asset Holdings, LLC, which have insignificantno material assets with no current value and noor operations, fully and unconditionally guarantee the senior notes.notes on a joint and several basis. The Company’s other subsidiary, 20 Broadway Associates LLC,subsidiaries, the value of whose assets and operations are minor, doesdo not guarantee the senior notes.
2014 Redemption of Senior Notes
In July 2014, the Company redeemed its then outstanding 8.25% Senior Notes due 2019 ("2019 Notes") using a portion of the proceeds from the May 2014 issuances of 2024 Notes and 2044 Notes. The 2019 Notes were redeemed for $317.5 million, representing a make-whole amount calculated in accordance with the terms of the 2019 Notes and related indenture. The Company recognized a pre-tax loss of $24.5 million related to the redemption, which included the make-whole premium and the write-off of deferred financing costs and unaccreted debt discount and is reflected under the caption “Loss on extinguishment of debt" in the consolidated statements of comprehensive income (loss) for the year ended December 31, 2014.
Term loan
In November 2015, the Company borrowed $500 million under a three-year term loan agreement, the proceeds of which were used to repay a portion of the borrowings then outstanding on the Company's revolving credit facility. The term loan matures in full on November 4, 2018 and bears interest at a variable market-based interest rate plus a margin that is based on the terms of the borrowing and the credit ratings assigned to the Company's senior, unsecured, long-term indebtedness. The interest rate on the term loan at December 31, 2015 was 1.8%.
The term loan contains certain restrictive covenants including a requirement that the Company maintain a consolidated net debt to total capitalization ratio of no greater than 0.65 to 1.0, consistent with the covenant requirement in the Company's revolving credit facility. The Company was in compliance with this covenant at December 31, 2015.

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Note payable
In February 2012, 20 Broadway Associates LLC, a 100% owned subsidiary of the Company, borrowed $22$22 million under a 10-year10-year amortizing term loannote payable secured by the Company’s corporate office building in Oklahoma City, Oklahoma. The loan bears interest at a fixed rate of 3.14% per annum. Principal and interest are payable monthly through the loan’s maturity date of February 26, 2022.2022. Accordingly, approximately $2.0$2.1 million is reflected as a current liability under the caption “Current portion of long-term debt” in the consolidated balance sheets at December 31, 2013.2015.
Note 8. Income Taxes
The items comprising the provision (benefit) for income taxes are as follows for the periods presented:
  Year ended December 31,
In thousands 2015 2014 2013
Current income tax provision:      
United States federal $
 $
 $6,193
Various states 24
 20
 16
Total current income tax provision 24
 20
 6,209
Deferred income tax provision (benefit):      
United States federal (140,578) 527,315
 403,002
Various states (40,863) 57,362
 39,619
Total deferred income tax provision (benefit) (181,441) 584,677
 442,621
Total provision (benefit) for income taxes $(181,417) $584,697
 $448,830
The provision (benefit) for income taxes differs from the amount computed by applying the United States statutory federal income tax rate to income (loss) before income taxes. The sources and tax effects of the difference are as follows:
  Year ended December 31,
In thousands 2015 2014 2013
Expected income tax expense (benefit) based on US statutory tax rate of 35% $(187,280) $546,713
 $424,567
State income taxes, net of federal benefit (16,219) 42,169
 25,838
Canadian valuation allowance 13,503
 4,389
 
Effect of differing statutory tax rate in Canada 5,239
 (1,900) 
Other, net 3,340
 (6,674) (1,575)
Provision (benefit) for income taxes $(181,417) $584,697
 $448,830

8591

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 8. Income Taxes
The items comprising the provision for income taxes are as follows for the periods presented:
  Year ended December 31,
In thousands 2013 2012 2011
Current income tax provision:      
Federal $6,193
 $9,191
 $12,931
State 16
 1,326
 239
Total current income tax provision 6,209
 10,517
 13,170
Deferred income tax provision:      
Federal 403,002
 383,157
 212,406
State 39,619
 22,137
 32,797
Total deferred income tax provision 442,621
 405,294
 245,203
Total provision for income taxes $448,830
 $415,811
 $258,373
The following table reconciles the provision for income taxes with income tax at the Federal statutory rate for the periods presented:
  Year ended December 31,
In thousands 2013 2012 2011
Federal income tax provision at statutory rate (35%) $424,567
 $404,319
 $240,606
State income tax provision, net of Federal benefit 25,838
 15,213
 17,684
Other, net (1,575) (3,721) 83
Provision for income taxes $448,830
 $415,811
 $258,373

86

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


The components of the Company’s deferred tax assets and deferred tax liabilities as of December 31, 20132015 and 20122014 are reflected in the table below. As discussed in Note 1. Organization and Summary of Significant Accounting Policies—New accounting pronouncements, in November 2015 the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes. This new standard requires that all deferred tax assets and deferred tax liabilities, along with any related valuation allowance, be classified as follows:noncurrent on the balance sheet. The new standard was early-adopted by the Company as of December 31, 2015 on a retrospective basis to all prior balance sheet periods presented. Accordingly, all deferred tax assets and deferred tax liabilities have been reflected as noncurrent and the Company reclassified $36.2 million and $145.3 million as of December 31, 2015 and 2014, respectively, from "Accrued liabilities and other" to “Deferred income tax liabilities, net” on the consolidated balance sheets.
  December 31,
In thousands 2013 2012
Current:    
Deferred tax assets (1)    
Non-cash losses on derivatives $33,029
 $
Other 2,288
 2,413
Total current deferred tax assets 35,317
 2,413
Deferred tax liabilities    
Other 645
 2,048
Total current deferred tax liabilities 645
 2,048
Net current deferred tax assets 34,672
 365
Noncurrent:    
Deferred tax assets    
Net operating loss carryforwards 41,791
 40,441
Non-cash losses on derivatives 2,975
 
Alternative minimum tax carryforwards 38,689
 27,380
Other 20,220
 11,576
Total noncurrent deferred tax assets 103,675
 79,397
Deferred tax liabilities    
Property and equipment 1,840,331
 1,330,551
Other 156
 11,422
Total noncurrent deferred tax liabilities 1,840,487
 1,341,973
Net noncurrent deferred tax liabilities 1,736,812
 1,262,576
Net deferred tax liabilities (2) $1,702,140
 $1,262,211
  December 31,
In thousands 2015 2014
Deferred tax assets    
United States net operating loss carryforwards 398,024
 60,904
Canadian net operating loss carryforwards 17,892
 4,899
Alternative minimum tax carryforwards 40,796
 38,715
Equity compensation 32,910
 22,255
Other 11,048
 8,920
Total deferred tax assets 500,670
 135,693
Canadian valuation allowance (17,892) (4,389)
Total deferred tax assets, net of valuation allowance 482,778
 131,304
Deferred tax liabilities    
Property and equipment (2,528,125) (2,254,343)
Non-cash gains on derivatives (38,452) (30,269)
Gain on derivative liquidation (4,158) (132,356)
Other (2,271) (1,132)
Total deferred tax liabilities (2,573,006) (2,418,100)
Deferred income tax liabilities, net $(2,090,228) $(2,286,796)
(1)
Deferred and prepaid taxes on the consolidated balance sheets contain receivables of $9.7 million for prepaid income taxes at December 31, 2013, with no such prepayments at December 31, 2012.
(2)
In addition to the 2012 provision for income taxes of $415.8 million, activity during 2012 includes an increase to deferred tax liabilities of $56.6 million related to the acquisition of assets from Wheatland Oil Inc. (see Note 14) and a decrease of $15.6 million related to the excess tax benefits of stock-based compensation.
As of December 31, 2013,2015, the Company had federal and state net operating loss carryforwards totaling $1.0of $865 million and $2.63 billion, which respectively. The federal net operating loss carryforward will begin expiring in 2033. The Oklahoma net operating loss carryforward of $2.12 billion will begin to expire beginning in 2017.2027. The remainder of the state net operating loss carryforwards have expiration periods that vary according to state jurisdiction.will begin expiring in 2017. The Company has alternative minimum tax credit carryforwards of $39$41 million that have no expiration date. Any available statutory depletion carryforwards will be recognized when realized. The Company files income tax returns in the U.S. Federal jurisdictionfederal, U.S. state and various stateCanadian jurisdictions. With few exceptions, the Company is no longer subject to U.S. Federal,federal, state and local income tax examinations by tax authorities for years prior to 2010.2012.
The Company recorded valuation allowances of $13.5 million and $4.4 million against Canadian deferred tax assets for the years ended December 31, 2015 and 2014, respectively, which resulted in a cumulative valuation allowance of $17.9 million as of December 31, 2015. Our Canadian subsidiary has generated operating loss carryforwards for which we do not believe we will realize a benefit. The amount of deferred tax assets considered realizable, however, could change if our subsidiary generates taxable income.

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Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 9. Lease Commitments
The Company’s operating lease obligations primarily represent leases for surface rentals, office equipment, communication towers, software services, and tanks for storage of hydraulic fracturing fluids. Lease payments associated with operating leases for the years ended December 31, 2015, 2014 and 2013 2012were $9.6 million, $8.0 million and 2011 were $3.0$3.0 million,, $2.2 million and $1.7 million, respectively, a portion of which was capitalized and/or billed to other interest owners. At December 31, 20132015, the minimum future rental commitments under operating leases having lease terms in excess of one year are as follows:

 Total amount
In these years In thousands
2014 $1,954
2015 432
In thousands Total amount
2016 346
 $3,348
2017 255
 1,327
2018 151
 979
2019 291
2020 210
Thereafter 182
 3,105
Total obligations $3,320
 $9,260
Note 10. Commitments and Contingencies
Included below is a discussion of various future commitments of the Company as of December 31, 2013.2015. The commitments under these arrangements are not recorded in the accompanying consolidated balance sheets.
Drilling commitments – As of December 31, 2013,2015, the Company had drilling rig contracts with various terms extending through January 2016. These contracts were entered into in the ordinary course of businessto year-end 2019 to ensure rig availability to allow the Company to execute its business objectives in its key strategic plays.operating areas. Future commitments as of December 31, 20132015 total approximately $110$422 million, of which $83$200 million is expected to be incurred in 2014, $262016, $136 million in 2015,2017, $62 million in 2018, and less than $1$24 million in 2016.
Fracturing and well stimulation service agreementThe Company has an agreement with a third party whereby the third party will provide, on a take-or-pay basis, hydraulic fracturing services and related equipment to service certain of the Company’s properties in North Dakota and Montana. The agreement, which expires in September 2014, requires the Company to pay a fixed rate per day for a minimum number of days per calendar quarter over the term regardless of whether the services are provided. The agreement also stipulates the Company will bear the cost of certain products and materials used. Future commitments remaining as of December 31, 2013 amount to approximately $16 million, which is expected to be incurred through September 2014.2019.
Pipeline transportation commitments – The Company has entered into firm transportation commitments to guarantee pipeline access capacity on operational crude oil pipelines in order to reduce the impact of possible production curtailments that may arise due to limited transportation capacity.and natural gas pipelines. The commitments, which have 5-yearvarying terms extending as far as November 2017,2027, require the Company to pay varying per-barrelper-unit transportation charges regardless of the amount of pipeline capacity used. Future commitments remaining as of December 31, 20132015 under the operational crude oil pipeline transportation arrangements amount to approximately $43 million,$1.0 billion, of which $14$215 million is expected to be incurred in 2014, $142016, $212 million in 2015, $102017, $207 million in 2016,2018, $154 million in 2019, $47 million in 2020, and $5$170 million in 2017. thereafter.
The Company has also entered into a commitment to guarantee pipeline access capacity on an operational natural gas pipeline system to move a portion of its North region natural gas production to market. The commitment, which has a 10-year term ending in October 2023, requires the Company to pay per-unit transportation charges regardless of the amount of pipeline capacity used. Future commitments under the arrangement amount to approximately $24 million as of December 31, 2013, which is expected to be incurred ratably over its 10-year term.
Further, the Company iswas a party to additional 5-yeara five-year firm transportation commitmentscommitment (the "Agreement") for a future crude oil pipeline projectsproject being constructed or considered for development that areis not yet operational. Such projects requireThe project requires the granting of regulatory approvals or otherwise require significantand requires additional construction efforts by our counterpartiesthe counterparty before being completed. FutureThe project has faced significant delays and has failed to gain the necessary permits and approvals. As a result of the persistent delays and lack of regulatory approval, the Agreement’s basic assumptions and purpose have become commercially impracticable. Accordingly, in 2015 the Company provided a shipper termination notice pursuant to the Agreement and formally provided the counterparty with the Company’s termination of the Agreement in its entirety. The Company's previously disclosed commitments under the non-operational arrangements totalAgreement totaled approximately $1.0 billion at December 31, 2013,$260 million, which includes approximately $96 million subject to a joint tariff arrangement between an unaffiliated party and an affiliate controlled by the Company's principal shareholder as discussed in Note 11. Related Party Transactions. These commitments represent aggregate

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Notes to Consolidated Financial Statements


transportation chargesare no longer expected to be incurred over the 5-year terms of the arrangements assuming the proposed pipeline projects are completed and become operational. The exact timing of the commencement of pipeline operations is not known due to uncertainties involving matters such as regulatory approvals, resolution of legal and environmental disputes, construction progress, and the ultimate probability of pipeline completion. Accordingly, the timing of the Company’s obligations under these non-operational arrangements cannot be predicted with certainty and may not be incurred on a ratable basis over a calendar year or may not be incurred at all. Although timing is uncertain, operators have indicated that certain pipeline projects may become operational in the fourth quarter of 2014, which would obligate the Company for transportation charges totaling $36 million in the 2014 fourth quarter, $143 million per year in years 2015 through 2018, and $106 million in 2019 associated with those projects.
Rail transportation commitments – The Company has entered into firm transportation commitments to guarantee capacity on rail transportation facilities in order to reduce the impact of possible production curtailments that may arise due to limited transportation capacity. The rail commitments have various terms extending through June 2014 and require the Company to pay varying per-barrel transportation charges regardless of the amount of rail capacity used. Future commitments remaining as of December 31, 2013 under the rail transportation arrangements amount to approximately $10 million, which is expected to be incurred through June 2014.incurred.
The Company’s pipeline and rail transportation commitments are for production primarily in the North region where the Company allocates a significant portion of its capital expenditures.region. The Company is not committed under these contracts to deliver fixed and determinable quantities of crude oil or natural gas in the future.
Cost sharingFuel purchase commitment – The Company has entered into an arrangement to share certain costs associateda forward purchase contract with a local utility company's construction and installationthird party to purchase specified quantities of electrical infrastructure that will provide service to parts of North Dakota wherediesel fuel at specified prices each month through June 2016 for use in drilling operations. Over the remaining contract term, the Company operates. This arrangement extends through January 2016 and requires the Companyhas committed to make scheduled periodic payments basedpurchase approximately 11 million gallons of diesel fuel at varying prices depending on the projected total costgrade of diesel fuel purchased and the timing and location of delivery. The contract satisfies a significant portion of the projectCompany's anticipated diesel fuel needs and the progress of construction.provides for physical delivery to desired locations. Future commitments under the arrangement as of December 31, 20132015 total approximately $25$31 million,, all of which $15 million is expected towill be incurred in 2014, $8 million in 2015, and $2 million in 2016.
Litigation – In November 2010, an allegeda putative class action was filed in the District Court of Blaine County, Oklahoma by Billy J. Strack and Daniela A. Renner as trustees of certain named trusts and on behalf of other similarly situated parties against the Company allegingCompany. The Petition alleged the Company improperly deducted post-production costs from royalties paid to plaintiffs and other royalty interest owners as categorized in the petition from crude oil and natural gas wells located in Oklahoma. The plaintiffs have alleged a number of

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Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


claims, including breach of contract, fraud, breach of fiduciary duty, unjust enrichment, and other claims and seek recovery of compensatory damages, interest, punitive damages and attorney fees on behalf of the allegedproposed class. On November 3, 2014, plaintiffs filed an Amended Petition that did not add any substantive claims, but sought a “hybrid class action” in which they sought certification of certain claims for injunctive relief, reserving the right to seek a further class certification on money damages in the future. Plaintiffs filed an Amended Motion for Class Certification on January 9, 2015, that modified the proposed class to royalty owners in Oklahoma production from July 1, 1993, to the present (instead of 1980 to the present) and sought certification of over 45 separate “issues” for injunctive or declaratory relief, again, reserving the right to seek a further class certification of money damages in the future. The Company has responded to the petition, deniedits amendment, and the motions for class certification denying the allegations and raisedraising a number of affirmative defenses. Discoverydefenses and legal arguments to each of the claims and filings. Certain discovery was undertaken and the “hybrid” motion was briefed by plaintiffs and the Company. A hearing on the “hybrid” class certification was held on June 1st and 2nd, 2015. On June 11, 2015, the trial court certified a “hybrid” class as requested by plaintiffs. The Company has appealed the trial court’s class certification order, which will be reviewed de novo by the appellate court. The appeal briefing is ongoingcomplete and information and documents continue to be exchanged.ready for determination by the court. An unsuccessful mediation was conducted on December 7, 2015. The Company is not currently able to estimate a reasonably possible loss or range of loss or what impact, if any, the action will have on its financial condition, results of operations or cash flows due to the preliminary status of the matter, the complexity and number of legal and factual issues presented by the matter and uncertainties with respect to, among other things, the nature of the claims and defenses, the potential size of the class, the scope and types of the properties and agreements involved, the production years involved, and the ultimate potential outcome of the matter. The class hasAlthough not been certified. Plaintiffscurrently at issue in the “hybrid” certification, plaintiffs have indicated that if the class is certified they may seek damagesalleged underpayments in excess of $165$200 million that they may claim as damages, which may increase with the passage of time, a majority of which would be comprised of interest. The Company disputes plaintiffs’ claims, disputes that the case meets the requirements for a class action and is vigorously defending the case. The Company will continue to assert its defenses to the case as certified as well as any future attempt to certify a money damages class.
The Company is involved in various other legal proceedings including, but not limited to, commercial disputes, claims from royalty and surface owners, property damage claims, personal injury claims, disputes with tax authorities and other matters. While the outcome of these legal matters cannot be predicted with certainty, the Company does not expect them to have a material effect on its financial condition, results of operations or cash flows. As of December 31, 20132015 and 2012,2014, the Company hashad recorded a liability on the consolidated balance sheets under the caption “Other noncurrent liabilities” of $1.7$6.1 million and $2.4$2.9 million,, respectively, for various matters, none of which are believed to be individually significant.
Environmental risk – Due to the nature of the crude oil and natural gas business, the Company is exposed to possible environmental risks. The Company is not aware of any material environmental issues or claims.
Note 11. Related Party Transactions
The affiliate transactions reflected in the consolidated statements of comprehensive income (loss) include transactions between the Company and Hiland Partners, LP and its subsidiaries ("Hiland"). Hiland was controlled by the Company's principal shareholder through February 13, 2015, at which time it was sold to an unaffiliated third party. As a result of the sale, the prior related party relationship between the Company and Hiland terminated as of February 13, 2015, which resulted in a reduction in certain affiliate transactions recognized in the Company's financial statements at December 31, 2015 and for the year then ended.
The Company sellshistorically sold a portion of its natural gas production to affiliates.Hiland. For the years ended December 31, 2013, 2012,2015, 2014, and 2011,2013, these sales amounted to $105.1$1.4 million, $61.7$95.1 million,, and $53.5$100.4 million,, respectively, net of transportation and processing costs, and are included in the caption “Crude oil and natural gas sales to affiliates” in the consolidated statements of income.comprehensive income (loss). At December 31, 20132015 nothing was due to the Company and 2012, $12.7at December 31, 2014, $13.1 million

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Notes to Consolidated Financial Statements


and $11.7 million, respectively, was due to the Company from these affiliates,Hiland, which is included in the caption “Receivables—Affiliated parties” in the consolidated balance sheets. At December 31, 2015 nothing was due from the Company and at December 31, 2014, $0.3 million was due from the Company to Hiland for transportation and processing costs associated with the transactions, which is included in the caption “Payables to affiliated parties” in the consolidated balance sheets.
TheIn prior years, the Company engagesengaged in crude oil trades with an affiliate from time to time to obtain space on pipeline systems in the Company's operating areas. For the years ended December 31, 2012, and 2011,There were no crude oil purchases or sales towith affiliates in 2015 or 2014. In 2013, the Company purchased 30,000 barrels from an affiliate totaled 21,000 barrelsfor $3.0 million and 435,000 barrels, respectively, generating sales proceeds of $1.9 million and $41.7 million, respectively. There werehad no crude oil sales to the affiliate in 2013. In 2013 and 2012, the Company purchased 30,000 barrels and 2,000 barrels, respectively, from the affiliate for $3.0 million and $0.2 million, respectively, with no purchases being made from the affiliate in 2011. The Company incurred $2.2 million, $2.7 million, and $1.4 million in transportation and gathering expenses in 2013, 2012, and 2011, respectively, associated with these transactions. At both December 31, 2013 and 2012, $0.2 million was due from the Company to the affiliate associated with these transactions, which is included in the caption “Payables to affiliated parties” in the consolidated balance sheets.affiliate.
The Company contracts for field services such as compression and drilling rig services and purchases residue fuel gas and reclaimed crude oil from certain affiliates. The Company capitalized costs of $5.7$2.6 million,, $5.0 $5.9 million and $4.1$5.7 million in 2013, 2012,2015, 2014, and 2011,2013, respectively, associated with drilling rig services provided by an affiliate. Hiland historically provided field services such as compression, purchases of residue fuel gas and reclaimed crude oil, and reimbursements of generator rentals and fuel. Production and other expenses attributable to these affiliate transactions with Hiland were $1.4$1.7 million,, $2.0 $5.1 million and $4.6$1.4 million for the years ended December 31,

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Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


2015, 2014, and 2013, 2012, and 2011, respectively. The total amount paid to these affiliates, a portion of which was billed to other interest owners, was $48.5$7.7 million,, $32.7 $58.2 million and $30.8$48.5 million for the years ended December 31, 2015, 2014, and 2013, 2012, and 2011, respectively. Under a contract for natural gas sales to an affiliate, the Company incurred gathering and treatment fees which amounted to $4.7 million in 2013, $4.7 million in 2012 and $4.6 million in 2011. At December 31, 20132015 nothing was due to these affiliates and 2012, $5.1at December 31, 2014, $5.6 million and $5.6 million, respectively, was due to these affiliates related to thesethe transactions, which is included in the caption “Payables to affiliated parties” in the consolidated balance sheets.
Certain officers and other key employees of the Company own or control entities that own working and royalty interests in wells operated by the Company. The Company paid revenues to these affiliates, including royalties, of $2.3$0.7 million,, $38.3 $1.7 million,, and $46.8$2.3 million and received payments from these affiliates of $1.3$0.5 million,, $38.5 $0.8 million,, and $67.5$1.3 million during the years ended December 31, 2013, 2012,2015, 2014, and 2011,2013, respectively, relating to the operations of the respective properties. The Company also paid to these affiliates $277,000 in 2012 and $4,900 in 2011 for their share of proceeds from undeveloped leasehold sales, with no such payments in 2013. At December 31, 20132015 and 2012, $0.4 million2014, $106,000 and $0.7 million$207,000 was due from these affiliates and approximately $0.2 million$52,000 and $0.3 million$133,000 was due to these affiliates, respectively, relating to these transactions.
Prior to July 2012, the Company leased office space under an operating lease from an entity owned by the Company’s principal shareholder. Rents paid associated with the leases totaled approximately $0.7 million and $1.0 million for the years ended December 31, 2012 and 2011, respectively.
The Company allows certain affiliates to use its corporate aircraft and crews and has used the aircraft and crews of those same affiliates from time to time in order to facilitate efficient transportation of Company personnel. The rates charged between the parties vary by type of aircraft used. For usage during 2013, 2012,2015, 2014, and 2011,2013, the Company charged affiliates approximately $55,000, $112,000,$9,600, $51,000, and $235,000,$55,000, respectively, for use of its corporate aircraft, crews, fuel, utilities and fuel and training costsreimbursement of expenses and received $33,000, $39,000, and $379,000 from the affiliateaffiliates in 2015, 2014, and 2013, for certain current and prior year charges.respectively. The Company was charged $51,000, $102,000,$236,000, $97,000, and $88,000,$51,000, respectively, by affiliates for use of their aircraft and crewsreimbursement of expenses during 2013, 2012,2015, 2014, and 20112013 and paid $221,000, $34,000, and $238,000 to the affiliates in 2015, 2014, and 2013, respectively.
The Company incurred costs for certain current and prior year charges.
In September 2012,various field projects that have been ongoing with an entity that became an affiliate of the Company entered into 5-year firm transportation commitments under a joint tariff arrangement to guarantee pipeline access capacity totaling 10,000 barrelsin the third quarter of crude oil per day on pipeline2014. During the fourth quarter of 2015, the affiliate relationship terminated. The total amount invoiced and capitalized for 2015 and 2014 associated with the projects being developed by an affiliated partywas $8.8 million and an unaffiliated party that are not yet operational.$1.8 million, respectively. The pipeline projects require additional construction efforts by those parties before being completed. The commitments require the Company to pay joint tariff transportation charges of $5.25 per barrel regardless of thetotal amount of pipeline capacity used, which will be allocated between the affiliated party and unaffiliated party. Future commitments under the joint tariff arrangement,paid, a portion of which will be allocatedwas billed to other interest owners, was $9.2 million and $1.9 million for 2015 and 2014 respectively. Nothing was owed by the affiliate, total approximately $96 millionCompany at December 31, 2013, representing aggregate joint tariff transportation charges expected to be incurred over2015 and $1.2 million was owed by the 5-year term assuming the pipeline projects are completed and become operational. The commitments under this arrangement are not recordedCompany at December 31, 2014, which is included in the accompanyingcaption “Payables to affiliated parties” in the consolidated balance sheets.
In August 2012, the Company acquired the assets of Wheatland Oil Inc. Wheatland is owned 75% by the Revocable Inter Vivos Trust of Harold G. Hamm, a trust of which Harold G. Hamm, the Company’s Chief Executive Officer, Chairman of the Board and principal shareholder is the trustee and sole beneficiary, and 25% by the Company’s Vice Chairman of Strategic Growth Initiatives, Jeffrey B. Hume. See Note 14. Property Transaction with Related Party for further discussion.



8995

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 12. Stock-Based Compensation
The Company has granted stock options to employees pursuant to the Continental Resources, Inc. 2000 Stock Option Plan (“2000 Plan”) and restricted stock to employees and directors pursuant to the Continental Resources, Inc. 2005 Long-Term Incentive Plan (“2005 Plan”) and 2013 Long-Term Incentive Plan ("2013 Plan") as discussed below. The Company’s associated compensation expense, which is included in the caption “General and administrative expenses” in the consolidated statements of comprehensive income is reflected in the table below(loss), was $51.8 million, $54.4 million, and $39.9 million for the periods presented.
  Year ended December 31,
In thousands 2013 2012 2011
Non-cash equity compensation $39,890
 $29,057
 $16,572
Stock options
Effective October 1, 2000, the Company adopted the 2000 Plan and granted stock options to certain eligible employees. On November 10, 2005, the 2000 Plan was terminated. As of March 31, 2012, all options issued under the 2000 Plan had been exercised or expired. The following table summarizes stock option activity under the 2000 Plan for the periods presented:
  Outstanding Exercisable
  
Number of
options
 
Weighted
average
exercise
price
 
Number of
options
 
Weighted
average
exercise
price
Outstanding at December 31, 2010 104,970
 $0.71
 104,970
 $0.71
Exercised (18,470) $0.71
    
Outstanding at December 31, 2011 86,500
 $0.71
 86,500
 $0.71
Exercised (86,500) $0.71
    
Outstanding at December 31, 2012 
 
 
 
The intrinsic value of a stock option is the amount by which the value of the underlying stock exceeds the exercise price of the option at its exercise date. The total intrinsic value of options exercised during the years ended December 31, 20122015, 2014 and 2011 was $7.6 million and $1.1 million,2013, respectively.
Restricted stock
In May 2013, the Company's shareholders, upon recommendation byCompany adopted the Board of Directors, approved the adoption of the Company's 2013 Plan. The 2013 Plan isand reserved a broad-based incentive planmaximum of 19,680,072 shares of common stock that allowsmay be issued pursuant to the Company to use, if desired, a variety of equity compensation alternatives in structuring compensation arrangements for the Company's officers, directors and select employees. Effective May 23, 2013, theplan. The 2013 Plan replaced the Company's 2005 Plan as the instrument used to grant long-term incentive awards and no further awards will be granted under the 2005 Plan. However, restricted stock awards granted under the 2005 Plan prior to the adoption of the 2013 Plan will remain outstanding in accordance with their terms.
The maximum number of shares of common stock available for issuance under the 2013 Plan is 9,840,036 shares, which includes (i) 7,500,000 new shares authorized under the 2013 Plan, (ii) 1,840,036 shares that remained available for issuance under the 2005 Plan as of March 27, 2013 that have been transferred from the 2005 Plan to the 2013 Plan, and (iii) up to 500,000 shares available for issuance under the 2013 Plan to the extent such shares are forfeited or withheld for payment of income taxes related to existing awards outstanding under the 2005 Plan. As of December 31, 2013,2015, the Company had a maximum of 9,813,98917,028,213 shares of restricted stock available to grant to officers, directors and select employees under the 2013 Plan.
Restricted stock is awarded in the name of the recipient and constitutes issued and outstanding shares of the Company’s common stock for all corporate purposes during the period of restriction and, except as otherwise provided under the 2013 Plan, 2005 Plan, or agreement relevant to a given award, includes the right to vote the restricted stock or to receive dividends, subject to forfeiture. Restricted stock grants generally vest over periods ranging from one to three years.

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Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


A summary of changes in non-vested restricted shares from December 31, 20102012 to December 31, 20132015 is presented below:below.
 Number of
non-vested
shares
 Weighted
average
grant-date
fair value
 Number of
non-vested
shares
 Weighted
average
grant-date
fair value
Non-vested restricted shares at December 31, 2010 1,108,077
 $35.72
Granted 491,315
 63.59
Vested (359,601) 29.95
Forfeited (41,447) 41.93
Non-vested restricted shares at December 31, 2011 1,198,344
 $48.66
Granted 916,028
 73.46
Vested (444,723) 45.25
Forfeited (40,187) 59.05
Non-vested restricted shares at December 31, 2012 1,629,462
 $63.28
 3,258,924
 $31.64
Granted 261,259
 97.95
 522,518
 48.98
Vested (464,809) 47.30
 (929,618) 23.65
Forfeited (68,756) 71.91
 (137,512) 35.96
Non-vested restricted shares at December 31, 2013 1,357,156
 $74.99
 2,714,312
 $37.50
Granted 1,424,764
 61.11
Vested (1,007,166) 35.91
Forfeited (453,146) 44.90
Non-vested restricted shares at December 31, 2014 2,678,764
 $49.40
Granted 1,462,534
 46.65
Vested (555,517) 48.07
Forfeited (336,170) 51.23
Non-vested restricted shares at December 31, 2015 3,249,611
 $48.20
The grant date fair value of restricted stock represents the closing market price of the Company’s common stock on the date of grant. Compensation expense for a restricted stock grant is a fixed amount determined at the grant date fair value and is recognized ratably over the vesting period as services are rendered by employees and directors. The expected life of restricted stock is based on the non-vested period that remains subsequent to the date of grant. There are no post-vesting restrictions related to the Company’s restricted stock. The fair value at the vesting date of restricted stock that vested during 2015, 2014 and 2013 2012was $23.6 million, $58.2 million and 2011 at the vesting date was $49.4$49.4 million,, $33.0 million and $19.9 million, respectively. As of December 31, 2013,2015, there was approximately $55$67 million of unrecognized compensation expense related to non-vested restricted stock. This expense is expected to be recognized ratably over a weighted average period of 1.51.2 years.
Note 13. Property Acquisitions and Dispositions
Acquisitions
In December 2012, the Company acquired certain producing and undeveloped properties in the Bakken play of North Dakota from a third party for $663.3 million, of which $477.1 million was allocated to producing properties. In the transaction, the Company acquired interests in approximately 119,000 net acres as well as producing properties with production of approximately 6,500 net barrels of oil equivalent per day.
In August 2012, the Company acquired the assets of Wheatland Oil Inc. through the issuance of shares of the Company’s common stock. See Note 14. Property Transaction with Related Party for further discussion.
In February 2012, the Company acquired certain producing and undeveloped properties in the Bakken play of North Dakota from a third party for $276 million, of which $51.7 million was allocated to producing properties. In the transaction, the Company acquired interests in approximately 23,100 net acres as well as producing properties with production of approximately 1,000 net barrels of oil equivalent per day.
Dispositions
In December 2012, the Company sold its producing crude oil and natural gas properties and supporting assets in its East region to a third party for $126.4 million. In connection with the transaction, the Company recognized a pre-tax gain of $68.0 million, which included the effect of removing $8.3 million of asset retirement obligations for the disposed properties previously recognized by the Company that were assumed by the buyer. The transaction excluded a portion of the Company’s non-producing leasehold acreage in the East region, which was retained by the Company for future exploration and development opportunities. The transaction also allowed for the Company to retain an overriding royalty interest in certain of the disposed properties as well as rights to drill in potential unproven deeper formations that may exist below the disposed properties. The disposed properties represented an immaterial portion of the Company’s total proved reserves, production, and revenues.

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Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


In June 2012, the Company assigned certain non-strategic leaseholds and producing properties located in Oklahoma to a third party for $15.9 million and recognized a pre-tax gain on the transaction of $15.9 million, which included the effect of removing $0.6 million of asset retirement obligations for the disposed properties previously recognized by the Company that were assumed by the buyer. The disposed properties represented an immaterial portion of the Company’s total proved reserves, production, and revenues.
In February 2012, the Company assigned certain non-strategic leaseholds and producing properties located in Wyoming to a third party for $84.4 million. In connection with the transaction, the Company recognized a pre-tax gain of $50.1 million, which included the effect of removing $11.1 million of asset retirement obligations for the disposed properties previously recognized by the Company that were assumed by the buyer. The disposed properties represented an immaterial portion of the Company’s total proved reserves, production, and revenues.
During 2011, the Company assigned certain non-strategic properties in Michigan, North Dakota, and Montana to third parties for total proceeds of $30.2 million. In connection with the transactions, the Company recognized pre-tax gains totaling $21.4 million. Substantially all of the properties disposed of in 2011 consisted of undeveloped leasehold acreage with no proved reserves and no production or revenues.
The gains on the above dispositions are included in the caption “Gain on sale of assets, net” in the consolidated statements of income.
Note 14. Property Transaction with Related Party
In March 2012, the Company entered into a Reorganization and Purchase and Sale Agreement (the “Agreement”) with Wheatland Oil Inc. ("Wheatland") and the shareholders of Wheatland. Wheatland is owned 75% by the Revocable Inter Vivos Trust of Harold G. Hamm, a trust of which Harold G. Hamm, the Company’s Chief Executive Officer, Chairman of the Board and principal shareholder is the trustee and sole beneficiary, and 25% by the Company’s Vice Chairman of Strategic Growth Initiatives, Jeffrey B. Hume. The Agreement provided for the acquisition by the Company, through the issuance of shares of the Company’s common stock, of all of Wheatland’s right, title and interest in and to certain crude oil and natural gas properties and related assets, in which the Company also owned an interest, in the states of Mississippi, Montana, North Dakota and Oklahoma and the assumption of certain liabilities related thereto.
The Wheatland transaction was consummated and closed on August 13, 2012, with an effective date of January 1, 2012. At closing, the Company issued an aggregate of approximately 3.9 million shares of its common stock, par value $0.01 per share, to the shareholders of Wheatland in accordance with the terms of the Agreement. The fair value of the consideration transferred by the Company at closing was approximately $279 million. In 2013, Wheatland paid the Company approximately $0.5 million upon final settlement of purchase price adjustments under the terms of the Agreement.
For accounting purposes, the acquisition represented a transaction between entities under common control as Mr. Hamm is the controlling shareholder of both the Company and Wheatland. Accordingly, the Company recorded the assets acquired and liabilities assumed at Wheatland’s carrying amount. The net book basis of Wheatland’s assets was approximately $82 million, primarily representing $177 million for acquired crude oil and natural gas properties partially offset by $38 million of joint interest obligations assumed, $0.6 million of asset retirement obligations assumed and $57 million of deferred income tax liabilities recognized. For the year ended December 31, 2012, the acquired Wheatland properties comprised approximately 484 MBoe of the Company’s crude oil and natural gas production and approximately $38 million of its crude oil and natural gas revenues.

9296

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 13. Accumulated Other Comprehensive Loss
Adjustments resulting from the process of translating foreign functional currency financial statements into U.S. dollars are included in "Accumulated other comprehensive loss" within shareholders’ equity on the consolidated balance sheets. The following table summarizes the change in accumulated other comprehensive loss for the years ended December 31, 2015 and 2014:
  Year ended December 31,
In thousands 2015 2014
Beginning accumulated other comprehensive loss, net of tax $(385) $
Foreign currency translation adjustments (2,969) (385)
Income tax benefit (1) 
 
Other comprehensive loss, net of tax (2,969) (385)
Ending accumulated other comprehensive loss, net of tax $(3,354) $(385)
(1)A valuation allowance has been recognized against deferred tax assets associated with losses generated by the Company's Canadian operations, thereby resulting in no income taxes on other comprehensive loss.
Note 14. Property Dispositions
During the year ended December 31, 2015, the Company sold certain non-strategic properties in various areas to third parties for proceeds totaling $34.0 million. The proceeds primarily related to the assignment of certain non-producing leasehold acreage in Oklahoma to a third party for $25.9 million in May 2015. The Company recognized a pre-tax gain on the transaction of $20.5 million. The assigned properties represented an immaterial portion of the Company’s leasehold acreage.
During the year ended December 31, 2014, the Company sold certain non-strategic properties in various areas to third parties for proceeds totaling $129.4 million. The proceeds primarily related to dispositions of properties in the Niobrara play in Colorado and Wyoming in March 2014 for proceeds totaling $30.3 million and $85.8 million of proceeds received in conjunction with the disposition of a portion of the Company's Northwest Cana properties in Oklahoma in September 2014. The disposed properties represented an immaterial portion of the Company’s total proved reserves, production, and revenues.
Note 15. Crude Oil and Natural Gas Property Information
The tables reflected below represent consolidated figures for the Company and its subsidiaries. In 2014, the Company initiated exploratory drilling activities in Canada. Through December 31, 2015, those drilling activities have not had a material impact on the Company's total capital expenditures, production, and revenues. Accordingly, the results of operations, costs incurred, and capitalized costs associated with the Canadian operations have not been shown separately from the consolidated figures in the tables below.
The following table sets forth the Company’s consolidated results of operations from crude oil and natural gas producing activities for the years ended December 31, 2013, 20122015, 2014 and 2011.2013.

 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2011 2015 2014 2013
Crude oil and natural gas sales $3,606,774
 $2,379,433
 $1,647,419
 $2,552,531
 $4,203,022
 $3,573,431
Production expenses (282,197) (195,440) (138,236) (348,897) (352,472) (282,197)
Production taxes and other expenses (332,130) (228,438) (144,810) (200,637) (349,760) (298,787)
Exploration expenses (34,947) (23,507) (27,920) (19,413) (50,067) (34,947)
Depreciation, depletion, amortization and accretion (953,796) (683,207) (384,301) (1,722,336) (1,338,351) (953,796)
Property impairments (220,508) (122,274) (108,458) (402,131) (616,888) (220,508)
Income taxes (659,783) (428,095) $(321,447)
Income tax benefit (provision) 33,680
 (559,311) (659,783)
Results from crude oil and natural gas producing activities $1,123,413
 $698,472
 $522,247
 $(107,203) $936,173
 $1,123,413

97

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Costs incurred in crude oil and natural gas activities
Costs incurred, both capitalized and expensed, in connection with the Company’s consolidated crude oil and natural gas acquisition, exploration and development activities for the years ended December 31, 2013, 20122015, 2014 and 20112013 are presented below: 
 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2011 2015 2014 2013
Property Acquisition Costs:      
Property acquisition costs:      
Proved $16,604
 $738,415
 $65,315
 $557
 $48,917
 $16,604
Unproved 546,881
 745,601
 183,247
 168,492
 409,529
 546,881
Total property acquisition costs 563,485
 1,484,016
 248,562
 169,049
 458,446
 563,485
Exploration Costs 687,767
 857,681
 734,797
 241,523
 863,606
 687,767
Development Costs 2,549,203
 1,975,660
 1,178,136
 2,148,530
 3,670,448
 2,549,203
Total $3,800,455
 $4,317,357
 $2,161,495
 $2,559,102
 $4,992,500
 $3,800,455
Exploration costs above include asset retirement costs of $1.8$3.3 million,, $3.3 $1.2 million and $1.7$1.8 million and development costs above include asset retirement costs of $6.0$19.5 million,, $1.0 $19.1 million and $3.7$6.0 million for the years ended December 31, 2015, 2014 and 2013, 2012 and 2011, respectively.
Aggregate capitalized costs
Aggregate capitalized costs relating to the Company’s consolidated crude oil and natural gas producing activities and related accumulated depreciation, depletion and amortization as of December 31, 20132015 and 20122014 are as follows:
 December 31, December 31,
In thousands 2013 2012 2015 2014
Proved crude oil and natural gas properties $12,423,878
 $8,980,505
 $19,520,724
 $17,045,967
Unproved crude oil and natural gas properties 1,181,268
 1,073,944
 682,988
 966,080
Total 13,605,146
 10,054,449
 20,203,712
 18,012,047
Less accumulated depreciation, depletion and amortization (3,083,180) (2,090,845) (6,374,218) (4,601,864)
Net capitalized costs $10,521,966
 $7,963,604
 $13,829,494
 $13,410,183
Under the successful efforts method of accounting, the costs of drilling an exploratory well are capitalized pending determination of whether proved reserves can be attributed to the discovery. When initial drilling operations are complete, management attempts to determine whether the well has discovered crude oil and natural gas reserves and, if so, whether those reserves can be classified as proved reserves. Often, the determination of whether proved reserves can be recorded under SEC guidelines cannot be made when drilling is completed. In those situations where management believes that economically

93

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


producible hydrocarbons have not been discovered, the exploratory drilling costs are reflected on the consolidated statements of comprehensive income (loss) as dry hole costs, a component of “Exploration expenses”. Where sufficient hydrocarbons have been discovered to justify further exploration or appraisal activities, exploratory drilling costs are deferred under the caption “Net property and equipment” on the consolidated balance sheets pending the outcome of those activities.
On a quarterly basis, operating and financial management review the status of all deferred exploratory drilling costs in light of ongoing exploration activities—in particular, whether the Company is making sufficient progress in its ongoing exploration and appraisal efforts. If management determines that future appraisal drilling or development activities are not likely to occur, any associated exploratory well costs are expensed in that period of determination.

98

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


The following table presents the amount of capitalized exploratory drilling costs pending evaluation at December 31 for each of the last three years and changes in those amounts during the years then ended:
 Year ended December 31, Year ended December 31,
In thousands 2013 2012 2011 2015 2014 2013
Balance at January 1 $92,699
 $128,123
 $92,806
 $93,421
 $152,775
 $92,699
Additions to capitalized exploratory well costs pending determination of proved reserves 548,933
 485,530
 500,046
 132,806
 627,853
 548,933
Reclassification to proved crude oil and natural gas properties based on the determination of proved reserves (479,507) (520,187) (456,780) (160,779) (671,618) (479,507)
Capitalized exploratory well costs charged to expense (9,350) (767) (7,949) (6,051) (15,589) (9,350)
Balance at December 31 $152,775
 $92,699
 $128,123
 $59,397
 $93,421
 $152,775
Number of gross wells 67
 46
 56
 73
 119
 67
As of December 31, 2015, exploratory drilling costs of $1.7 million, representing three non-operated wells, were suspended one year beyond the completion of drilling. Evaluation of these non-operated wells is not within the Company's control and a final determination by the operator may not occur until 2017. Of the suspended costs, $0.1 million was incurred in 2014 and $1.6 million was incurred in 2013.
Note 16. Supplemental Crude Oil and Natural Gas Information (Unaudited)
The table below shows estimates of proved reserves prepared by the Company’s internal technical staff and independent external reserve engineers in accordance with SEC definitions. Ryder Scott Company, L.P. ("Ryder Scott") prepared reserve estimates for properties comprising approximately 99%, 99%, and 96%99% of the Company’s discounted future net cash flows (PV-10) as of December 31, 2013, 2012,2015, 2014, and 2011,2013, respectively. Properties comprising 99% of proved crude oil reserves and 94%97% of proved natural gas reserves were evaluated by Ryder Scott as of December 31, 2013.2015. Remaining reserve estimates were prepared by the Company’s internal technical staff. All proved reserves stated herein are located in the United States. No proved reserves have been recorded for the Company's Canadian operations at December 31, 2015.
Proved reserves are estimated quantities of crude oil and natural gas which geological and engineering data demonstrate with reasonable certainty to be economically producible in future periods from known reservoirs under existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the right to operate expire, unless evidence indicates renewal is reasonably certain. There are numerous uncertainties inherent in estimating quantities of proved crude oil and natural gas reserves. Crude oil and natural gas reserve engineering is a subjective process of estimating underground accumulations of crude oil and natural gas that cannot be precisely measured, and estimates of engineers other than the Company’s might differ materially from the estimates set forth herein. The accuracy of any reserve estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. Periodic revisions to the estimated reserves and future cash flows may be necessary as a result of a number of factors, including reservoir performance, new drilling, crude oil and natural gas prices, changes in costs, technological advances, new geological or geophysical data, or other economic factors. Accordingly, reserve estimates may differ significantly from the quantities of crude oil and natural gas ultimately recovered.
Reserves at December 31, 2013, 20122015, 2014 and 20112013 were computed using the 12-month unweighted average of the first-day-of-the-month commodity prices as required by SEC rules.
Natural gas imbalance receivables and payables for each of the three years ended December 31, 2013, 20122015, 2014 and 20112013 were not material and have not been included in the reserve estimates.

9499

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Proved crude oil and natural gas reserves
Changes in proved reserves were as follows for the periods presented:
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
 Crude Oil
(MBbls)
 Natural Gas
(MMcf)
 Total
(MBoe)
Proved reserves as of December 31, 2010 224,784
 839,568
 364,712
Revisions of previous estimates 28,607
 (158,219) 2,237
Extensions, discoveries and other additions 87,465
 447,098
 161,981
Production (16,469) (36,671) (22,581)
Sales of minerals in place 
 
 
Purchases of minerals in place 1,746
 2,056
 2,089
Proved reserves as of December 31, 2011 326,133
 1,093,832
 508,438
Revisions of previous estimates 33,272
 (174,736) 4,149
Extensions, discoveries and other additions 166,844
 400,848
 233,652
Production (25,070) (63,875) (35,716)
Sales of minerals in place (7,165) (4,046) (7,838)
Purchases of minerals in place 67,149
 89,061
 81,992
Proved reserves as of December 31, 2012 561,163
 1,341,084
 784,677
 561,163
 1,341,084
 784,677
Revisions of previous estimates (55,783) (241,623) (96,054) (55,783) (241,623) (96,054)
Extensions, discoveries and other additions 267,009
 1,065,870
 444,654
 267,009
 1,065,870
 444,654
Production (34,989) (87,730) (49,610) (34,989) (87,730) (49,610)
Sales of minerals in place 
 
 
 
 
 
Purchases of minerals in place 388
 419
 458
 388
 419
 458
Proved reserves as of December 31, 2013 737,788
 2,078,020
 1,084,125
 737,788
 2,078,020
 1,084,125
Revisions of previous estimates (67,151) (244,783) (107,949)
Extensions, discoveries and other additions 239,526
 1,206,569
 440,621
Production (44,530) (114,295) (63,579)
Sales of minerals in place (123) (18,623) (3,227)
Purchases of minerals in place 850
 1,498
 1,100
Proved reserves as of December 31, 2014 866,360
 2,908,386
 1,351,091
Revisions of previous estimates (246,840) (302,143) (297,198)
Extensions, discoveries and other additions 134,764
 710,453
 253,173
Production (53,517) (164,454) (80,926)
Sales of minerals in place (253) (456) (329)
Purchases of minerals in place 
 
 
Proved reserves as of December 31, 2015 700,514
 3,151,786
 1,225,811
Revisions of previous estimates. Revisions represent changes in previous reserve estimates, either upward or downward, resulting from new information normally obtained from development drilling and production history or resulting from a change in economic factors, such as commodity prices, operating costs or development costs.
Upward revisions to crude oil reserves for both of the years ended December 31, 2011 and 2012 were due to better than anticipated production performance, with 2011 revisions also being positively impacted by higher average commodity prices throughout 2011 as compared to 2010. Downward revisions to natural gasproved reserves for both of the years ended December 31, 2011 and 2012 were due to the removal of proved undeveloped ("PUD") reserves for certain dry gas properties not expected to be developed given the pricing environment for natural gas.
Revisions for the year ended December 31,in 2013 primarily representrepresented the removal of PUD reserves resulting from a decision in 2013 to allocate a greater focus of the Company's 5-year growth plan to drilling programs in higher rates-of-return crude oil and liquids-rich natural gasprogram on certain areas of the Bakken and SCOOP plays with more attractive rates of return and multi-well pad drilling capabilities, while continuing to buildbuilding on the early success in the Company's development of the Lower Three Forks reservoirs in the Bakken. Another contributing factor is
Downward revisions to proved reserves in 2014 resulted from the Company refining its drilling program and reducing its planned rig count in response to the significant decrease in crude oil prices in the latter part of 2014, which contributed to the removal of PUD reserves no longer scheduled to be developed within five years from the date in which they were first booked.
Downward revisions to proved reserves in 2015 resulted primarily from the significant decrease in commodity prices in 2015. The 12-month average price for crude oil decreased 47% from $94.99 per Bbl for 2014 to $50.28 per Bbl for 2015, while the 12-month average price for natural gas decreased 41% from $4.35 per MMBtu for 2014 to $2.58 per MMBtu for 2015. These decreases shortened the economic lives of certain producing properties and caused certain exploration and development projects to become uneconomic which had an adverse impact on the Company's proved reserve estimates, resulting in downward revisions of 185 MMBo and 391 Bcf (totaling 251 MMBoe) in 2015.
In response to the continued decrease in commodity prices throughout 2015, the Company has further refined its drilling program and reduced its planned rig count to concentrate its efforts in core areas of North Dakota and Oklahoma that provide the best opportunities to improve recoveries and rates of return. The refinement of the Company's drilling program contributed to the removal of PUD reserves no longer scheduled to be developed within five years from the date in which they were first booked. One element leading to the removal is an increased focusemphasis on multi-well pad drilling in the Bakken, which resulted in the removal of PUDs in certain areas in favor of PUDs more likely to be developed with pad drilling where operating efficiencies may be realizedrealized. Further, in the SCOOP play the Company removed certain PUD locations originally planned to maximize ratesbe developed with standard lateral drilling lengths in favor of return. ThesePUDs to be developed with extended length laterals in similar

100

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


locations that provide opportunities for improved well productivity and economics. The combination of these and other factors contributed toresulted in the removal of 4265 MMBo and 235197 Bcf (81(totaling 98 MMBoe) of PUD reserves in 2013.2015.
Additionally, changes in anticipated production performance on certain properties resulted in 63 MMBo of downward revisions to crude oil proved reserves and 125 Bcf of upward revisions to natural gas proved reserves (netting to 42 MMBoe of downward revisions) in 2015.
The downward revisions described above were partially offset by upward revisions in 2015 due to lower operating costs being realized in conjunction with depressed commodity prices and improvements in operating efficiencies as well as other factors.
Extensions, discoveries and other additions. These are additions to proved reserves resulting from (1) extension of the proved acreage of previously discovered reservoirs through additional drilling in periods subsequent to discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.
Extensions, discoveries and other additions for each of the three years reflected in the table above were primarily due to increases in proved reserves associated with our successful drilling activity in our Bakken and strong production growth in the Bakken field.SCOOP plays. Proved reserve additions in the Bakken totaled 22775 MMBo and 293124 Bcf (276(totaling 96 MMBoe) and reserve additions in SCOOP totaled 36 MMBo and 340 Bcf (totaling 93 MMBoe) for the year ended December 31, 2013.2015. Additionally, 20132015 extensions and discoveries were significantly impacted by successful drilling results in the emerging SCOOP play,Northwest Cana/STACK area, resulting in 36 MMBo and 730 Bcf (158 MMBoe) of proved reserve additions during the year. Significant progress continued to be madeof 20 MMBo and 222 Bcf (totaling 57 MMBoe) in 2013 in developing and expanding the Company's Bakken and SCOOP assets, both laterally and vertically, through strategic exploration, development, planning and technology.2015.

95

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Sales of minerals in place. These are reductions to proved reserves resulting from the disposition of properties during a period. During the year ended December 31, 2012, the Company disposed of certain non-strategic properties in Oklahoma, Wyoming, and the East region. See Note 13.14. Property Acquisitions and Dispositions for furthera discussion of the Company’s 2012notable dispositions.
Purchases of minerals in place. These are additions to proved reserves resulting from the acquisition of properties during a period. Purchases for the year ended December 31, 2012 primarily reflected the Company’sThere were no notable acquisitions of properties in the Bakken play of North Dakota duringthree years reflected in the year. See Note 13. Property Acquisitions and Dispositions and Note 14. Property Transaction with Related Party for further discussion of the Company’s 2012 acquisitions.table above.
The following reserve information sets forth the estimated quantities of proved developed and proved undeveloped crude oil and natural gas reserves of the Company as of December 31, 2013, 20122015, 2014 and 2011:2013:
 December 31, December 31,
 2013 2012 2011 2015 2014 2013
Proved Developed Reserves            
Crude oil (MBbl) 278,630
 226,870
 145,024
 326,798
 342,137
 278,630
Natural Gas (MMcf) 768,969
 545,499
 361,265
 1,190,343
 962,051
 768,969
Total (MBoe) 406,792
 317,786
 205,235
 525,188
 502,479
 406,792
Proved Undeveloped Reserves            
Crude oil (MBbl) 459,158
 334,293
 181,109
 373,716
 524,223
 459,158
Natural Gas (MMcf) 1,309,051
 795,585
 732,567
 1,961,443
 1,946,335
 1,309,051
Total (MBoe) 677,333
 466,891
 303,203
 700,623
 848,612
 677,333
Total Proved Reserves            
Crude oil (MBbl) 737,788
 561,163
 326,133
 700,514
 866,360
 737,788
Natural Gas (MMcf) 2,078,020
 1,341,084
 1,093,832
 3,151,786
 2,908,386
 2,078,020
Total (MBoe) 1,084,125
 784,677
 508,438
 1,225,811
 1,351,091
 1,084,125
Proved developed reserves are reserves expected to be recovered through existing wells with existing equipment and operating methods. Proved undeveloped reserves are reserves that require incrementalrelatively major capital expenditures to recover. Natural gas is converted to barrels of crude oil equivalent using a conversion factor of six thousand cubic feet per barrel of crude oil based on the average equivalent energy content of natural gas compared to crude oil.

101

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Standardized measure of discounted future net cash flows relating to proved crude oil and natural gas reserves
The standardized measure of discounted future net cash flows presented in the following table was computed using the 12-month unweighted average of the first-day-of-the-month commodity prices, the costs in effect at December 31 of each year and a 10% discount factor. The Company cautions that actual future net cash flows may vary considerably from these estimates. Although the Company’s estimates of total proved reserves, development costs and production rates were based on the best available information, the development and production of the crude oil and natural gas reserves may not occur in the periods assumed. Actual prices realized, costs incurred and production quantities may vary significantly from those used. Therefore, the estimated future net cash flow computations should not be considered to represent the Company’s estimate of the expected revenues or the current value of existing proved reserves.

96

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


The following table sets forth the standardized measure of discounted future net cash flows attributable to the Company’s proved crude oil and natural gas reserves as of December 31, 2013, 20122015, 2014 and 2011.2013.
 December 31, December 31,
In thousands 2013 2012 2011 2015 2014 2013
Future cash inflows $78,646,274
 $54,362,574
 $35,042,916
 $36,551,672
 $90,867,459
 $78,646,274
Future production costs (21,333,460) (13,103,469) (7,495,552) (10,869,493) (25,799,221) (21,333,460)
Future development and abandonment costs (10,250,789) (8,295,130) (5,073,043) (6,935,958) (12,842,174) (10,250,789)
Future income taxes (12,447,127) (8,500,766) (5,956,615) (3,717,612) (13,800,737) (12,447,127)
Future net cash flows 34,614,898
 24,463,209
 16,517,706
 15,028,609
 38,425,327
 34,614,898
10% annual discount for estimated timing of cash flows (18,319,131) (13,282,852) (9,012,350) (8,552,325) (19,992,293) (18,319,131)
Standardized measure of discounted future net cash flows $16,295,767
 $11,180,357
 $7,505,356
 $6,476,284
 $18,433,034
 $16,295,767
The weighted average crude oil price (adjusted for location and quality differentials) utilized in the computation of future cash inflows was $91.50, $86.56,$41.63, $84.54, and $88.71$91.50 per barrel at December 31, 2013, 20122015, 2014 and 2011,2013, respectively. The weighted average natural gas price (adjusted for location and quality differentials) utilized in the computation of future cash inflows was $5.36, $4.31,$2.35, $6.06, and $5.59$5.36 per Mcf at December 31, 2013, 20122015, 2014 and 2011,2013, respectively. Future cash flows are reduced by estimated future costs to develop and produce the proved reserves, as well as certain abandonment costs, based on year-end cost estimates assuming continuation of existing economic conditions. The expected tax benefits to be realized from the utilization of net operating loss carryforwards and tax credits are used in the computation of future income tax cash flows.
The changes in the aggregate standardized measure of discounted future net cash flows attributable to the Company’s proved crude oil and natural gas reserves are presented below for each of the past three years:years.
 December 31, December 31,
In thousands 2013 2012 2011 2015 2014 2013
Standardized measure of discounted future net cash flows at January 1 $11,180,357
 $7,505,356
 $3,785,322
 $18,433,034
 $16,295,767
 $11,180,357
Extensions, discoveries and improved recoveries, less related costs 6,613,665
 3,724,136
 2,276,355
 1,091,283
 5,516,528
 6,613,665
Revisions of previous quantity estimates (1,765,300) 254,493
 133,990
 (2,156,028) (1,755,366) (1,765,300)
Changes in estimated future development and abandonment costs 1,942,585
 (298,148) (70,219) 5,008,731
 476,665
 1,942,585
Purchases (sales) of minerals in place, net 12,012
 1,171,047
 56,246
 (7,768) (3,196) 12,012
Net change in prices and production costs 263,541
 (530,515) 1,855,532
 (16,111,142) (1,925,349) 263,541
Accretion of discount 1,118,036
 750,536
 378,532
 1,843,303
 1,629,576
 1,118,036
Sales of crude oil and natural gas produced, net of production costs (2,992,447) (1,955,555) (1,364,373) (2,002,997) (3,500,790) (2,992,447)
Development costs incurred during the period 1,210,223
 1,095,156
 528,737
 1,394,584
 2,466,748
 1,210,223
Change in timing of estimated future production and other 464,111
 (102,519) 773,279
 (3,844,259) (309,902) 464,111
Change in income taxes (1,751,016) (433,630) (848,045) 2,827,543
 (457,647) (1,751,016)
Net change 5,115,410
 3,675,001
 3,720,034
 (11,956,750) 2,137,267
 5,115,410
Standardized measure of discounted future net cash flows at December 31 $16,295,767
 $11,180,357
 $7,505,356
 $6,476,284
 $18,433,034
 $16,295,767

97102

Continental Resources, Inc. and Subsidiaries
Notes to Consolidated Financial Statements


Note 17. Quarterly Financial Data (Unaudited)
The Company’s unaudited quarterly financial data for 20132015 and 20122014 is summarized below. 
 Quarter ended Quarter ended
In thousands, except per share data March 31     June 30     September 30     December 31     March 31     June 30     September 30     December 31    
2013        
2015        
Total revenues (1) $710,229
 $1,100,752
 $823,835
 $820,334
 $625,644
 $796,374
 $682,669
 $575,480
Gain (loss) on derivative instruments, net (1) $(84,831) $199,056
 $(203,774) $(102,202) $32,755
 $(4,737) $46,527
 $16,540
Property impairments (2) $147,561
 $76,872
 $96,697
 $81,001
Income (loss) from operations $(111,276) $82,447
 $(52,356) $(142,816)
Net income (loss) $(131,971) $403
 $(82,423) $(139,677)
Net income (loss) per share:        
Basic $(0.36) $
 $(0.22) $(0.38)
Diluted $(0.36) $
 $(0.22) $(0.38)
2014     (3) (4)
Total revenues (1) $972,495
 $886,095
 $1,645,328
 $1,297,700
Gain (loss) on derivative instruments, net (1) $(39,674) $(262,524) $473,999
 $387,958
Property impairments (2) $58,208
 $79,316
 $85,561
 $393,803
Income from operations $270,146
 $573,872
 $328,043
 $273,706
 $421,317
 $236,394
 $944,897
 $265,228
Net income $140,627
 $323,270
 $167,498
 $132,824
 $226,234
 $103,538
 $533,521
 $114,048
Net income per share:                
Basic $0.76
 $1.76
 $0.91
 $0.72
 $0.61
 $0.28
 $1.45
 $0.31
Diluted $0.76
 $1.75
 $0.91
 $0.72
 $0.61
 $0.28
 $1.44
 $0.31
2012        
Total revenues (1) $395,100
 $1,004,719
 $483,729
 $688,972
Gain (loss) on derivative instruments, net (1) $(169,057) $471,728
 $(158,294) $9,639
Income from operations $135,591
 $686,474
 $105,522
 $365,220
Net income $69,094
 $405,684
 $44,096
 $220,511
Net income per share:        
Basic $0.38
 $2.26
 $0.24
 $1.20
Diluted $0.38
 $2.25
 $0.24
 $1.19

(1)Gains and losses on mark-to-market derivative instruments are reflected in “Total revenues” on both the consolidated statements of comprehensive income (loss) and this table of unaudited quarterly financial data. Derivative gains and losses have been shown separately to illustrate the fluctuations in revenues that are attributable to the Company’s derivative instruments. Commodity price fluctuations each quarter can result in significant swings in mark-to-market gains and losses, which affects comparability between periods.
(2)Property impairments have been shown separately to illustrate the fluctuations in income (loss) that are attributable to write downs of the Company's assets. Commodity price fluctuations each quarter can result in significant changes in estimated future cash flows and resulting impairments, which affects comparability between periods.
(3)
The 2014 third quarter includes a $24.5 million pre-tax ($15.4 million after tax, or $0.04 per basic and diluted share) loss on extinguishment of debt as discussed in Note 7. Long-Term Debt.
(4)Balances for the fourth quarter of 2014 include $433 million of pre-tax gains ($273 million after tax, or $0.74 per basic and diluted share) recognized from crude oil derivative contracts that were settled prior to their contractual maturities.


98103



Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
There have been no changes in accountants or any disagreements with accountants.

Item 9A.Controls and Procedures
Evaluation of Disclosure Controls and Procedures
As of the end of the period covered by this report, an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) was performed under the supervision and with the participation of the Company’s management, including its Chief Executive Officer and Chief Financial Officer. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of December 31, 20132015 to ensure that information required to be disclosed in the reports it files and submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and that information required to be disclosed under the Exchange Act is accumulated and communicated to the Company’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting
As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, of our internal control over financial reporting to determine whether any changes occurred during the fourth quarter of 20132015 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Based on that evaluation, there were no changes in our internal control over financial reporting or in other factors during the fourth quarter of 20132015 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
 

99104



Management’s Report on Internal Control Over Financial Reporting

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Our Company’s management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of our consolidated financial statements for external purposes in accordance with generally accepted accounting principles. Under the supervision and with the participation of our Company’s management, including the Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control—Integrated Framework (1992)(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
Our internal control over financial reporting includes those policies and procedures that: (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of our consolidated financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our consolidated financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Based on our evaluation under the framework in Internal Control—Integrated Framework (1992)(2013), the management of our Company concluded that our internal control over financial reporting was effective as of December 31, 2013.2015.
The effectiveness of our internal control over financial reporting as of December 31, 20132015 has been audited by Grant Thornton LLP, an independent registered public accounting firm, as stated in their report that follows.


/s/ Harold G. Hamm
Chairman of the Board and Chief Executive Officer

/s/ John D. Hart
Senior Vice President, Chief Financial Officer and Treasurer

February 24, 2016

100105



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Shareholders
Continental Resources, Inc.
We have audited the internal control over financial reporting of Continental Resources, Inc. (an Oklahoma corporation) and Subsidiariessubsidiaries (the “Company”) as of December 31, 2013,2015, based on criteria established in the 19922013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Overover Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2013,2015, based on criteria established in the 19922013 Internal Control—Integrated Framework issued by COSO.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements of the Company as of and for the year ended December 31, 2013,2015, and our report dated February 26, 201424, 2016 expressed an unqualified opinion on those financial statements.
 
/s/    GRANT THORNTON LLP
 
Oklahoma City, Oklahoma
February 26, 201424, 2016

101106



Item 9B.Other Information
None.
PART III
 
Item 10.Directors, Executive Officers and Corporate Governance
Information as to Item 10 will be set forth in the Proxy Statement for the Annual Meeting of Shareholders to be held in May 20142016 (the “Annual Meeting”) and is incorporated herein by reference.
 
Item 11.Executive Compensation
Information as to Item 11 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.
 
Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Information as to Item 12 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.
 
Item 13.Certain Relationships and Related Transactions, and Director Independence
Information as to Item 13 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.
 
Item 14.Principal AccountingAccountant Fees and Services
Information as to Item 14 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.

102107



PART IV
 
Item 15.Exhibits and Financial Statement Schedules
(1) Financial Statements
The consolidated financial statements of Continental Resources, Inc. and Subsidiaries and the Report of Independent Registered Public Accounting Firm are included in Part II, Item 8 of this report beginning on page 67.report. Reference is made to the accompanying Index to Consolidated Financial Statements.
(2) Financial Statement Schedules
All financial statement schedules have been omitted because they are not applicable or the required information is presented in the financial statements or the notes thereto.
(3) Index to Exhibits 
The exhibits required to be filed or furnished pursuant to Item 601 of Regulation S-K are set forth below.
3.1  Conformed version of Third Amended and Restated Certificate of Incorporation of Continental Resources, Inc. as amended by amendment filed February 24, 2012on June 15, 2015 filed as Exhibit 3.1 to the Company’s 2011 Form 10-K10-Q for the quarter ended June 30, 2015 (Commission File No. 001-32886) filed August 5, 2015 and incorporated herein by reference.
  
3.2  Third Amended and Restated Bylaws of Continental Resources, Inc. filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed November 6, 2012 and incorporated herein by reference.
  
4.1  Registration Rights Agreement dated as of May 18, 2007 by and among Continental Resources, Inc., the Revocable Inter Vivos Trust of Harold G. Hamm, the Harold Hamm DST Trust and the Harold Hamm HJ Trust filed February 24, 2012 as Exhibit 4.1 to the Company’s 2011 Form 10-K (Commission File No. 001-32886) and incorporated herein by reference.
  
4.2  Specimen Common Stock Certificate filed as Exhibit 4.1 to the Company’s Registration Statement on Form S-1 (Commission File No. 333-132257) filed April 14, 2006 and incorporated herein by reference.
  
4.3Indenture dated as of September 23, 2009 among Continental Resources, Inc., Banner Pipeline Company, L.L.C. and Wilmington Trust FSB, as trustee, filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed September 24, 2009 and incorporated herein by reference.
4.44.3***  Indenture dated as of April 5, 2010 among Continental Resources, Inc., Banner Pipeline Company, L.L.C. and Wilmington Trust FSB, as trustee, filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed April 7, 2010 and incorporated herein by reference.trustee.
  
4.54.4***  Indenture dated as of September 16, 2010 among Continental Resources, Inc., Banner Pipeline Company, L.L.C. and Wilmington Trust FSB, as trustee, filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed September 17, 2010 and incorporated herein by reference.trustee.
  
4.64.5  Indenture dated as of March 8, 2012 among Continental Resources, Inc., Banner Pipeline Company, L.L.C. and Wilmington Trust, National Association, as trustee, filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed March 8, 2012 and incorporated herein by reference.
   
4.74.6  Indenture dated as of April 5, 2013 among Continental Resources, Inc., Banner Pipeline Company, L.L.C., CLR Asset Holdings, LLC and Wilmington Trust, National Association, as trustee, filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed April 11, 2013 and incorporated herein by reference.
4.7Indenture dated as of May 19, 2014 among Continental Resources, Inc., Banner Pipeline Company, L.L.C., CLR Asset Holdings, LLC and Wilmington Trust, National Association, as trustee, filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed May 22, 2014 and incorporated herein by reference.
   
4.8 Registration Rights Agreement dated as of August 13, 2012 among Continental Resources, Inc., the Revocable Inter Vivos Trust of Harold G. Hamm, and Jeffrey B. Hume filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed August 17, 2012 and incorporated herein by reference.
  
10.1† Amended and Restated Continental Resources, Inc. 2005 Long-Term Incentive Plan effective as of April 3, 2006 filed as Exhibit 10.9 to the Company’s Registration Statement on Form S-1 (Commission File No. 333-132257) filed April 14, 2006 and incorporated herein by reference.
  

108



10.2† Form of Restricted Stock Award Agreement under the Continental Resources, Inc. 2005 Long-Term Incentive Plan filed as Exhibit 10.10 to the Company’s Registration Statement on Form S-1 (Commission File No. 333-132257) filed April 14, 2006 and incorporated herein by reference.
  

103



10.3† Form of Indemnification Agreement between Continental Resources, Inc. and each of the directors and executive officers thereof filed as Exhibit 10.12 to the Company’s Registration Statement on Form S-1 (Commission File No. 333-132257) filed April 14, 2006 and incorporated herein by reference.
  
10.4† Membership Interest Assignment Agreement by and between Continental Resources, Inc., the Harold Hamm Revocable Inter Vivos Trust, the Harold Hamm HJ Trust and the Harold Hamm DST Trust dated March 30, 2006 filed as Exhibit 10.13 to the Company’s Registration Statement on Form S-1 (Commission File No. 333-132257) filed April 14, 2006 and incorporated herein by reference.
  
10.5Crude oil transportation agreement between Banner Pipeline Company, L.L.C., a wholly owned subsidiary of Continental Resources, Inc. and Banner Transportation Company dated July 11, 2007 filed February 24, 2012 as Exhibit 10.8 to the Company’s 2011 Form 10-K (Commission File No. 001-32886) and incorporated herein by reference.
10.6Seventh Amended and Restated Credit Agreement dated June 30, 2010 among Continental Resources, Inc. as borrower, Union Bank, N.A. as administrative agent, as issuing lender and as swing line lender, and the other lenders party thereto, filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed July 7, 2010 and incorporated herein by reference.
10.7Amendment No. 1 dated July 26, 2012 to the Seventh Amended and Restated Credit Agreement dated June 30, 2010, among Continental Resources, Inc., as borrower, Banner Pipeline Company, L.L.C., as guarantor, Union Bank, N.A., as administrative agent and issuing lender, and the other lenders party thereto, filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed August 1, 2012 and incorporated herein by reference.
10.8†10.5† First Amendment to the Continental Resources, Inc. 2005 Long-Term Incentive Plan filed February 28, 2013 as Exhibit 10.2 to the Company’s 2012 Form 10-K (Commission File No. 001-32886) and incorporated herein by reference.
   
10.9
Amendment No. 2 dated April 3, 2013 to the Seventh Amended and Restated Credit Agreement dated June 30, 2010, among Continental Resources, Inc., as borrower, Banner Pipeline Company, L.L.C. and CLR Asset Holdings, LLC as guarantors, Union Bank, N.A., as administrative agent and issuing lender, and the other lenders party thereto, filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed April 5, 2013 and incorporated herein by reference.

10.10†10.6† Continental Resources, Inc. 2013 Long-Term Incentive Plan included as Appendix A to the Company's Definitive Proxy Statement on Schedule 14A (Commission File No. 001-32886) filed April 10, 2013 and incorporated herein by reference.
   
10.11†Description of cash bonus plan adopted on February 22, 2013 filed as Exhibit 10.1 to the Company's Form 10-Q for the quarter ended March 31, 2013 (Commission File No. 001-32886) filed May 8, 2013 and incorporated herein by reference.
10.12†10.7† Form of Employee Restricted Stock Award Agreement under the Continental Resources, Inc. 2013 Long-Term Incentive Plan filed as Exhibit 10.2 to the Company's Current Report on Form 8-K (Commission File No. 001-32886) filed May 24, 2013 and incorporated herein by reference.
   
10.13†10.8† Form of Non-Employee Director Restricted Stock Award Agreement under the Continental Resources, Inc. 2013 Long-Term Incentive Plan filed as Exhibit 10.3 to the Company's Current Report on Form 8-K (Commission File No. 001-32886) filed May 24, 2013 and incorporated herein by reference.
   
10.14†Summary of Non-Employee Director Compensation Approved as of May 23, 2013 to be effective July 1, 2013 filed as Exhibit 10.6 to the Company's Form 10-Q for the quarter ended June 30, 2013 (Commission File No. 001-32886) filed August 8, 2013 and incorporated herein by reference.
10.15†10.9† Continental Resources, Inc. Deferred Compensation Plan filed as Exhibit 10.1 to the Company's Current Report on Form 8-K (Commission File No. 001-32886) filed September 26, 2013 and incorporated herein by reference.
   
10.1610.10† First Amendment No. 4 and Consent dated December 11, 2013 to the Seventh AmendedContinental Resources, Inc. Deferred Compensation Plan filed as Exhibit 10.1 to the Company's Form 10-Q for the quarter ended March 31, 2014 (Commission File No. 001-32886) filed May 8, 2014 and Restatedincorporated herein by reference.
10.11Revolving Credit Agreement dated June 30, 2010,as of May 16, 2014 among Continental Resources, Inc., as borrower, Banner Pipeline Company LLC,L.L.C. and CLR Asset Holdings, LLC, as guarantors, Union Bank, N.A., as administrative agent, and issuing lender,the other lenders party thereto filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission File No. 001-32886) filed May 21, 2014 and incorporated herein by reference.
10.12†Second Amendment to the Continental Resources, Inc. Deferred Compensation Plan adopted and effective as of May 23, 2014 filed as Exhibit 10.15 to the Company’s Registration Statement on Form S-4 (Commission File No. 333-196944) filed June 20, 2014 and incorporated herein by reference.
10.13†Description of cash bonus plan approved as of March 20, 2015 filed as Exhibit 10.1 to the Company's Form 10-Q for the quarter ended March 31, 2015 (Commission File No. 001-32886) filed May 6, 2015 and incorporated herein by reference.
10.14Amendment No. 1 dated May 4, 2015 to the Revolving Credit Agreement dated as of May 16, 2014 among Continental Resources, Inc., as borrower, Banner Pipeline Company L.L.C. and CLR Asset Holdings, LLC, as guarantors, the lenders party thereto, and MUFG Union Bank, N.A., as Administrative Agent, filed as Exhibit 10.2 to the Company's Form 10-Q for the quarter ended March 31, 2015 (Commission File No. 001-32886) filed May 6, 2015 and incorporated herein by reference.
10.15†Summary of Non-Employee Director Compensation Approved as of May 19, 2015 to be effective July 1, 2015 filed as Exhibit 10.2 to the Company's Form 10-Q for the quarter ended June 30, 2015 (Commission File No. 001-32886) filed August 5, 2015 and incorporated herein by reference.
10.16Term Loan Agreement dated as of November 4, 2015 among Continental Resources, Inc., as borrower, and its subsidiaries Banner Pipeline Company, L.L.C. and CLR Asset Holdings, LLC, as guarantors, and MUFG Union Bank, N.A., as Administrative Agent, Bank of America, N.A., Citibank, N.A., JPMorgan Chase Bank, N.A. and Mizuho Bank, LTD., as Co-Syndication Agents, and Compass Bank, Toronto Dominion (Texas) LLC and U.S. Bank National Association, as Co-Documentation Agents, and the other lenders party thereto filed as Exhibit 10.1 to the Company's Current Report on Form 8-K10-Q for the quarter ended September 30, 2015 (Commission File No. 001-32886) filed December 12, 2013November 4, 2015 and incorporated herein by reference.
   

109



21* Subsidiaries of Continental Resources, Inc.
  

104



23.1* Consent of Grant Thornton LLP.
  
23.2* Consent of Ryder Scott Company, L.P.
  
31.1* Certification of the Company’s Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (15 U.S.C. Section 7241)
   
31.2* Certification of the Company’s Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (15 U.S.C. Section 7241)
  
32** Certification of the Company’s Chief Executive Officer and Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350)
  
99* Report of Ryder Scott Company, L.P., Independent Petroleum Engineers and Geologists
  
101.INS** XBRL Instance Document
  
101.SCH** XBRL Taxonomy Extension Schema Document
  
101.CAL** XBRL Taxonomy Extension Calculation Linkbase Document
  
101.DEF** XBRL Taxonomy Extension Definition Linkbase Document
  
101.LAB** XBRL Taxonomy Extension Label Linkbase Document
  
101.PRE** XBRL Taxonomy Extension Presentation Linkbase Document
*Filed herewith
**Furnished herewith
*** Re-filed herewith pursuant to Item 10(d) of Regulation S-K.
Management contracts or compensatory plans or arrangements filed pursuant to Item 601(b)(10)(iii) of Regulation S-K.

105110



Signatures
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, Continental Resources, Inc. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
CONTINENTAL RESOURCES, INC.
  
By: 
/S/    HAROLD G. HAMM
Name: Harold G. Hamm
Title: Chairman of the Board and Chief Executive Officer
Date: February 26, 201424, 2016
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of Continental Resources, Inc. and in the capacities and on the dates indicated.
 
Signature  Title  Date
   

/s/    HAROLD G. HAMM
  
Chairman of the Board and
Chief Executive Officer
(principal executive officer)
  February 26, 201424, 2016
Harold G. Hamm   
   

/s/    JOHN D. HART
  
Senior Vice President, Chief Financial
Officer and Treasurer
(principal financial and accounting officer)
  February 26, 201424, 2016
John D. Hart   
   
/s/    DAVID L. BOREN  Director  February 26, 201424, 2016
David L. Boren    
   
/s/    ROBERT J. GRANTWILLIAM B. BERRY  Director  February 26, 201424, 2016
Robert J. GrantWilliam B. Berry    
   
/s/    LON MCCAIN  Director  February 26, 201424, 2016
Lon McCain    
   
/s/    JOHN T. MCNABB II  Director  February 26, 201424, 2016
John T. McNabb II    
   
/s/    MARK E. MONROE  Director  February 26, 201424, 2016
Mark E. Monroe    
/s/    EDWARD T. SCHAFERDirectorFebruary 26, 2014
Edward T. Schafer