Supplemental Information on Oil and Natural Gas Producing Activities (Unaudited) | Supplemental Information on Oil and Natural Gas Producing Activities (Unaudited) The supplemental information includes capitalized costs related to oil and natural gas producing activities; costs incurred in oil and natural gas property acquisition, exploration and development; and the results of operations for oil and natural gas producing activities. Supplemental information is also provided for oil, natural gas and NGL production and average sales prices; the estimated quantities of proved oil, natural gas and NGL reserves; the standardized measure of discounted future net cash flows associated with proved oil, natural gas and NGL reserves; and a summary of the changes in the standardized measure of discounted future net cash flows associated with proved oil, natural gas and NGL reserves. Capitalized Costs Related to Oil and Natural Gas Producing Activities The Company’s capitalized costs for oil and natural gas activities consisted of the following (in thousands): Successor Predecessor December 31, December 31, 2016 2015 2014 Oil and natural gas properties Proved $ 840,201 $ 12,529,681 $ 11,707,147 Unproved 74,937 363,149 290,596 Total oil and natural gas properties 915,138 12,892,830 11,997,743 Less accumulated depreciation, depletion and impairment (353,030 ) (11,149,888 ) (6,359,149 ) Net oil and natural gas properties capitalized costs $ 562,108 $ 1,742,942 $ 5,638,594 Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development Costs incurred in oil and natural gas property acquisition, exploration and development activities which have been capitalized are summarized as follows (in thousands): Successor Predecessor Period from October 2, 2016 through December 31, 2016 Period from January 1, 2016 through October 1, 2016 Year Ended December 31, 2015 Year Ended December 31, 2014 Acquisitions of properties Proved $ 5,142 $ 3,897 $ 35,376 $ 73,370 Unproved 5,491 1,899 210,065 123,649 Exploration(1) — 1,234 29,297 41,070 Development 27,429 149,924 571,562 1,288,395 Total cost incurred $ 38,062 $ 156,954 $ 846,300 $ 1,526,484 ____________________ (1) Includes seismic costs of $7.1 million and $10.8 million for the years ended December 31, 2015 and 2014 , respectively. Results of Operations for Oil and Natural Gas Producing Activities The Company’s results of operations from oil and natural gas producing activities are shown in the following table (in thousands): Successor Predecessor Period from October 2, 2016 through December 31, 2016 Period from January 1, 2016 through October 1, 2016 Year Ended December 31, 2015 Year Ended December 31, 2014 Revenues $ 98,307 $ 279,971 $ 707,434 $ 1,420,879 Expenses Production costs 27,640 135,715 324,141 377,819 Depreciation and depletion 33,971 86,613 319,913 434,295 Accretion of asset retirement obligations 2,090 4,365 4,477 9,092 Impairment 319,087 657,392 4,473,787 164,779 Total expenses 382,788 884,085 5,122,318 985,985 (Loss) income before income taxes (284,481 ) (604,114 ) (4,414,884 ) 434,894 Income tax expense (benefit)(1) 8 (5 ) 126 (2,852 ) Results of operations for oil and natural gas producing activities (excluding corporate overhead and interest costs) $ (284,489 ) $ (604,109 ) $ (4,415,010 ) $ 437,746 ____________________ (1) Reflects the Company’s effective tax rate for each period. Oil, Natural Gas and NGL Reserve Quantities Proved oil, natural gas and NGL reserves are those quantities, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible, based on oil, natural gas and NGL prices used to estimate reserves, from a given date forward from known reservoirs, and under existing economic conditions, operating methods, and government regulation prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain. The term “reasonable certainty” implies a high degree of confidence that the quantities of oil, natural gas and NGLs actually recovered will equal or exceed the estimate. To achieve reasonable certainty, the Company’s engineers and independent petroleum consultants relied on technologies that have been demonstrated to yield results with consistency and repeatability. The technologies and economic data used to estimate the Company’s proved reserves include, but are not limited to, well logs, geologic maps, seismic data, well test data, production data, historical price and cost information and property ownership interests. The accuracy of the reserve estimates is dependent on many factors, including the following: • the quality and quantity of available data and the engineering and geological interpretation of that data; • estimates regarding the amount and timing of future costs, which could vary considerably from actual costs; • the accuracy of mandated economic assumptions such as the future prices of oil, natural gas and NGLs; and • the judgment of the personnel preparing the estimates. Proved developed reserves are proved reserves expected to be recovered through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared with the cost of a new well. Proved undeveloped reserves are reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively large major expenditure is required for recompletion. The table below represents the Company’s estimate of proved oil, natural gas and NGL reserves attributable to the Company’s net interest in oil and natural gas properties, all of which are located in the continental United States, based upon the evaluation by the Company and its independent petroleum engineers of pertinent geoscience and engineering data in accordance with the SEC’s regulations. Estimates of the substantial majority of the Company’s proved reserves have been prepared by independent reservoir engineers and geoscience professionals and are reviewed by members of the Company’s senior management with professional training in petroleum engineering to ensure that the Company consistently applies rigorous professional standards and the reserve definitions prescribed by the SEC. Cawley, Gillespie & Associates, Inc. (“CG&A”), Ryder Scott Company, L.P. (“Ryder Scott”) and Netherland, Sewell & Associates, Inc. (“Netherland Sewell”), independent oil and natural gas consultants, prepared the estimates of proved reserves of oil, natural gas and NGLs attributable to the majority of the Company’s net interest in oil and natural gas properties as of the end of one or more of 2016 , 2015 and 2014 . CG&A, Ryder Scott and Netherland Sewell are independent petroleum engineers, geologists, geophysicists and petrophysicists and do not own an interest in the Company or its properties and are not employed on a contingent basis. CG&A and Ryder Scott prepared the estimates of proved reserves for a majority of the Company’s properties as of December 31, 2016 . The remaining 6.0% of estimates of proved reserves was based on Company estimates. The Company believes the geoscience and engineering data examined provides reasonable assurance that the proved reserves are economically producible in future years from known reservoirs, and under existing economic conditions, operating methods and governmental regulations. Estimates of proved reserves are subject to change, either positively or negatively, as additional information is available and contractual and economic conditions change. 2016 Activity. During 2016, on a pro forma combined basis, Predecessor Company and Successor Company recognized total downward revisions of prior estimates of approximately 105.4 MMBoe, predominantly from revisions of approximately 94.7 MMBoe due to well performance and 12.1 MMBoe due to a decrease in commodity prices. The negative revisions from well performance were from the Mid-Continent area and resulted from steeper than anticipated well production decline rates for Mississippian horizontal wells in areas with increased natural fracture density and that have been developed with three or more horizontal wells per section as inter-well pressure communication has had more impact on well performance than originally forecasted. Additionally, changing pressure conditions in the Company’s Mississippian wells producing with artificial lift have resulted in increased production decline rates that are now becoming more predictable on a large group of base wells as this population of wells has been producing for more than two years. Of the total performance revisions, approximately 85% were to gas and associated NGL reserves, with the revisions to gas mostly from changes made to late-life decline rates, and 15% were to oil reserves. Other decreases of reserves excluding production included the sale of WTO reserves of 24.6 MMBoe and 19.1 MMBoe of adjustment from change in accounting for Trusts. These decreases were partially offset by approximately 7.8 MMBoe of extensions due to successful drilling. 2015 Activity. During 2015, the Company recognized additional oil, NGL and natural gas reserves from extensions and discoveries of 9.7 MMBbls, 9.3 MMBbls, and 160.9 Bcf, respectively, primarily due to successful drilling in the Mississippian formation in the Mid-Continent area. Acquisition of the Rockies assets, located in Jackson County, Colorado, in December 2015 added 27.6 MMBoe of reserves. These positive revisions were offset by (i) negative pricing revisions of approximately 54 MMBbls for oil, 36 MMBbls for NGLs and 687 Bcf for natural gas, due primarily to significantly lower commodity prices in 2015, and (ii) negative revisions of approximately 16 MMBbls for oil, 1 MMBbls for NGLs and 74 Bcf for natural gas primarily from well performance in the Mid-Continent. 2014 Activity. During 2014, the Company recognized additional oil, NGL and natural gas reserves from extensions and discoveries of 37.6 MMBbls, 27.5 MMBbls, and 467.2 Bcf, respectively, primarily due to successful drilling in the Mississippian formation in the Mid-Continent area. Revisions of previous estimates decreased oil reserves by 18.7 MMBbls, primarily comprised of (i) approximately 9 MMBbls from Permian Basin proved undeveloped reserves, largely due to removal of drilling locations not expected to be drilled within a five year period, (ii) approximately 8 MMBbls from well performance in the Mid-Continent and (iii) approximately 2 MMBbls from acreage losses or revisions to well interest ownerships. These negative revisions were offset by positive revisions to NGL and gas reserves of 11.1 MMBbls and 167.6 Bcf, respectively, primarily from well performance in the Mid-Continent area. Acquisitions of reserves added 3.5 MMBoe. Sales of proved reserves during 2014 totaled 55.5 MMBoe from the sale of the Gulf Properties. The summary below presents changes in the Company’s estimated reserves. Oil NGL Natural Gas (MBbls) (MBbls) (MMcf)(1) Proved developed and undeveloped reserves As of December 31, 2013 - Predecessor 142,641 59,052 1,390,429 Revisions of previous estimates (18,687 ) 11,103 167,589 Acquisitions of new reserves 1,009 441 12,527 Extensions and discoveries 37,603 27,500 467,185 Sales of reserves in place (25,659 ) (2,516 ) (163,800 ) Production (10,876 ) (3,794 ) (85,697 ) As of December 31, 2014(2) - Predecessor 126,031 91,786 1,788,233 Revisions of previous estimates (70,708 ) (37,384 ) (759,106 ) Acquisitions of new reserves 22,447 2,460 15,952 Extensions and discoveries 9,741 9,257 160,865 Production (9,600 ) (5,044 ) (92,104 ) As of December 31, 2015(2) - Predecessor 77,911 61,075 1,113,840 Adoption of ASU 2015-02 (6,971 ) (3,695 ) (50,508 ) Revisions of previous estimates (39,973 ) (21,475 ) (415,568 ) Extensions and discoveries 987 472 7,955 Sales of reserves in place (387 ) — (145,267 ) Production (4,315 ) (3,358 ) (44,124 ) As of October 1, 2016 - Predecessor 27,252 33,019 466,328 Revisions of previous estimates 23,978 1,139 915 Extensions and discoveries 2,868 448 10,309 Production (1,214 ) (999 ) (12,770 ) As of December 31, 2016 - Successor 52,884 33,607 464,782 Proved developed reserves As of December 31, 2013 - Predecessor 83,893 35,807 951,609 As of December 31, 2014 - Predecessor 79,022 56,823 1,203,447 As of December 31, 2015 - Predecessor 48,639 51,089 964,617 As of October 1, 2016 - Predecessor 24,541 30,238 428,050 As of December 31, 2016 - Successor 25,911 29,290 393,028 Proved undeveloped reserves As of December 31, 2013 - Predecessor 58,748 23,245 438,820 As of December 31, 2014 - Predecessor 47,009 34,963 584,786 As of December 31, 2015 - Predecessor 29,272 9,986 149,223 As of October 1, 2016 - Predecessor 2,711 2,781 38,278 As of December 31, 2016 - Successor 26,973 4,317 71,754 ____________________ (1) Natural gas reserves are computed at 14.65 pounds per square inch absolute and 60 degrees Fahrenheit. (2) Includes proved reserves attributable to noncontrolling interests as shown in the table below: Predecessor December 31, 2015 2014 Oil (MBbl) 7,004 11,027 NGL (MBbl) 3,694 4,761 Natural gas (MMcf) 50,508 70,833 Standardized Measure of Discounted Future Net Cash Flows (Unaudited) The standardized measure of discounted cash flows and summary of the changes in the standardized measure computation from year to year are prepared in accordance with ASC Topic 932, Extractive Activities—Oil and Gas (“ASC Topic 932”). The assumptions underlying the computation of the standardized measure of discounted cash flows may be summarized as follows: • the standardized measure includes the Company’s estimate of proved oil, natural gas and NGL reserves and projected future production volumes based upon economic conditions; • pricing is applied based upon 12-month average market prices at December 31, 2016 , 2015 and 2014 adjusted for fixed or determinable contracts that are in existence at year-end. The calculated weighted average per unit prices for the Company’s proved reserves and future net revenues were as follows: Successor Predecessor December 31, December 31, 2016 2015 2014 Oil (per barrel) $ 38.59 $ 45.29 $ 91.65 NGL (per barrel) $ 10.99 $ 12.68 $ 32.79 Natural gas (per Mcf) $ 1.56 $ 1.87 $ 3.61 • future development and production costs are determined based upon actual cost at year-end; • the standardized measure includes projections of future abandonment costs based upon actual costs at year-end; and • a discount factor of 10% per year is applied annually to the future net cash flows. The summary below presents the Company’s future net cash flows relating to proved oil, natural gas and NGL reserves based on the standardized measure in ASC Topic 932 (in thousands). Successor Predecessor December 31, December 31, 2016 2015 2014 Future cash inflows from production $ 3,136,762 $ 6,387,944 $ 21,022,320 Future production costs (1,454,798 ) (2,731,542 ) (6,499,366 ) Future development costs(1) (665,516 ) (838,945 ) (1,810,201 ) Future income tax expenses (142 ) (901 ) (3,223,740 ) Undiscounted future net cash flows 1,016,306 2,816,556 9,489,013 10% annual discount (577,942 ) (1,501,994 ) (5,401,261 ) Standardized measure of discounted future net cash flows(2) $ 438,364 $ 1,314,562 $ 4,087,752 ____________________ (1) Includes abandonment costs. (2) Includes approximately $224.6 million and $643.3 million attributable to noncontrolling interests at December 31, 2015 and 2014 respectively. The following table represents the Company’s estimate of changes in the standardized measure of discounted future net cash flows from proved reserves (in thousands): Successor Predecessor Period from October 2, 2016 through December 31, 2016 Period from January 1, 2016 through October 1, 2016 Year Ended December 31, 2015 Year Ended December 31, 2014 Beginning present value $ 392,604 $ 1,314,562 $ 4,087,752 $ 4,017,611 Changes during the year Adoption of ASU 2015-02 — (224,965 ) — — Revenues less production and other costs (70,668 ) (144,256 ) (383,293 ) (1,043,060 ) Net changes in prices, production and other costs 35,684 (394,173 ) (3,813,465 ) 331,694 Development costs incurred 7,941 69,080 217,596 364,262 Net changes in future development costs (291,232 ) 436,041 273,437 (341,183 ) Extensions and discoveries 14,986 12,449 230,055 1,785,963 Revisions of previous quantity estimates 308,374 (728,254 ) (1,354,778 ) (77,688 ) Accretion of discount 9,375 91,337 512,483 477,458 Net change in income taxes — 402 1,426,333 (256,371 ) Purchases of reserves in-place — — 18,429 50,958 Sales of reserves in-place — (13,314 ) — (1,058,330 ) Timing differences and other(1) 31,300 (26,305 ) 100,013 (163,562 ) Net change for the year 45,760 (921,958 ) (2,773,190 ) 70,141 Ending present value(2) $ 438,364 $ 392,604 $ 1,314,562 $ 4,087,752 ____________________ (1) The change in timing differences and other are related to revisions in the Company’s estimated time of production and development. (2) Includes approximately $224.6 million and $643.3 million attributable to noncontrolling interests at December 31, 2015 , and 2014 respectively. |