Grizzly Energy 8K Index to Consolidated Financial Statements | GRZZP 2 Dec 10

Exhibit 99.1

Index to Consolidated Financial Statements

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM	1
CONSOLIDATED BALANCE SHEETS	2
CONSOLIDATED STATEMENTS OF OPERATIONS	3
CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY AND COMPREHENSIVE INCOME (LOSS)	4
CONSOLIDATED STATEMENTS OF CASH FLOWS	5
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS	6
SUPPLEMENTARY INFORMATION	33

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of Encore Energy Partners GP LLC

and Unitholders of Encore Energy Partners LP:

We have audited the accompanying consolidated balance sheets of Encore Energy Partners LP (the “Partnership”) as of December 31, 2009 and 2008, and the related consolidated statements of operations, partners’ equity and comprehensive income (loss), and cash flows for each of the three years in the period ended December 31, 2009. These financial statements are the responsibility of the Partnership’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 financial statements referred to above present fairly, in all material respects, the consolidated financial position of Encore Energy Partners LP at December 31, 2009 and 2008, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2009, in conformity with U.S. generally accepted accounting principles.

As discussed in Note 2 to the consolidated financial statements, effective January 1, 2009, the Partnership retroactively changed its method of calculating basic and diluted earnings per common unit with the adoption of the guidance originally issued in EITF Issue No. 07-4, Application of the Two-Class Method under FASB Statement No. 128, Earnings per Share, to Master Limited Partnerships (codified in FASB ASC Topic 260, Earnings per Share) and FSP No. EITF 03-6-1, Determining Whether Instruments Granted in Share-Based Payment Transactions Are Participating Securities (codified in FASB ASC Topic 260, Earnings Per Share). Additionally, as discussed in Note 2 to the consolidated financial statements, the Partnership has changed its reserve estimates and related disclosures as a result of adopting new oil and gas reserve estimation and disclosure requirements resulting from Accounting Standards Update No. 2010-03, Oil and Gas Reserve Estimation and Disclosures, effective for annual reporting periods ended on or after December 31, 2009.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Encore Energy Partners LP’s internal control over financial reporting as of December 31, 2009, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 24, 2010 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Fort Worth, Texas

February 24, 2010

ENCORE ENERGY PARTNERS LP

CONSOLIDATED BALANCE SHEETS

	December 31,
	2009			2008
	(In thousands, except unit amounts)
ASSETS
Current assets:
Cash and cash equivalents	$	1,754		$	619
Accounts receivable:
Trade		24,543			18,965
Affiliate		8,213			3,896
Derivatives		12,881			75,131
Other		857			831
Total current assets		48,248			99,442
Properties and equipment, at cost— successful efforts method:
Proved properties, including wells and related equipment		851,833			814,903
Unproved properties		55			84
Accumulated depletion, depreciation, and amortization		(210,417	)		(154,584	)
		641,471			660,403
Other property and equipment		863			802
Accumulated depreciation		(419	)		(240	)
		444			562
Goodwill		9,290			9,290
Other intangibles, net		3,316			3,662
Derivatives		13,423			38,497
Other		3,459			1,457
Total assets	$	719,651		$	813,313
LIABILITIES AND PARTNERS’ EQUITY
Current liabilities:
Accounts payable:
Trade	$	577		$	1,036
Affiliate		2,780			5,468
Accrued liabilities:
Lease operating		3,683			4,252
Development capital		1,484			2,277
Interest		429			126
Production, ad valorem, and severance taxes		10,665			10,634
Derivatives		9,815			1,297
Oil and natural gas revenues payable		1,598			1,287
Other		1,659			1,502
Total current liabilities		32,690			27,879
Derivatives		13,401			3,491
Future abandonment cost, net of current portion		12,556			11,987
Long-term debt		255,000			150,000
Other		—			605
Total liabilities		313,647			193,962
Commitments and contingencies (see Note4)
Partners’ equity:
Limited partners— 45,285,347 and 33,077,610 common units issued and outstanding, respectively		409,777			616,076
General partner— 504,851 general partner units issued and outstanding		(353	)		7,534
Accumulated other comprehensive loss		(3,420	)		(4,259	)
Total partners’ equity		406,004			619,351
Total liabilities and partners’ equity	$	719,651		$	813,313

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

ENCORE ENERGY PARTNERS LP

CONSOLIDATED STATEMENTS OF OPERATIONS

	Year Ended December 31,
	2009			2008			2007
	(In thousands, except per unit amounts)
Revenues:
Oil	$	127,611		$	226,613		$	135,546
Natural gas		22,428			53,944			39,119
Marketing		478			5,324			8,582
Total revenues		150,517			285,881			183,247
Expenses:
Production:
Lease operating		41,676			44,752			33,980
Production, ad valorem, and severance taxes		16,099			28,147			17,712
Depletion, depreciation, and amortization		56,757			57,537			47,494
Exploration		3,132			196			126
General and administrative		11,375			16,605			15,245
Marketing		302			5,466			6,673
Derivative fair value loss (gain)		47,464			(96,880	)		26,301
Other operating		3,099			1,670			1,426
Total expenses		179,904			57,493			148,957
Operating income (loss)		(29,387	)		228,388			34,290
Other income (expenses):
Interest		(10,974	)		(6,969	)		(12,702	)
Other		46			99			196
Total other expenses		(10,928	)		(6,870	)		(12,506	)
Income (loss) before income taxes		(40,315	)		221,518			21,784
Income tax provision		(14	)		(762	)		(78	)
Net income (loss	$	(40,329	)	$	220,756		$	21,706
Net income (loss) allocation (see Note8):
Limited partners’ interest in net income (loss)	$	(39,913	)	$	163,070		$	(18,877	)
General partner’s interest in net income (loss)	$	(592	)	$	2,648		$	(394	)
Net income (loss) per common unit:
Basic	$	(1.01	)	$	5.33		$	(0.79	)
Diluted	$	(1.01	)	$	5.21		$	(0.79	)
Weighted average common units outstanding:
Basic		39,366			30,568			23,877
Diluted		39,366			31,938			23,877

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

ENCORE ENERGY PARTNERS LP

CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY AND

COMPREHENSIVE INCOME (LOSS)

	Owner’s Net Equity	Limited Partners		General Partner		Accumulated Other Comprehensive Loss	Total Partners’ Equity
	Owner’s Net Equity	Units	Amount	Units	Amount	Accumulated Other Comprehensive Loss	Total Partners’ Equity
	(In thousands, except per unit amounts)
Balance at December31, 2006	$197,810	—	$ —	—	$ —	$ —	$197,810
Contribution by EAC in connection with acquisition of the Elk Basin Assets	103,062	10,280	—	221	—	—	103,062
Net contributions from owner	119,867	—	—	—	—	—	119,867
Equity adjustment due to combination of entities under common control	(1,306)	—	—	—	—	—	(1,306)
Contribution of Permian Basin Assets by EAC	(26,229)	4,043	26,229	—	—	—	—
Allocation of owner’s net equity— Permian Basin Assets	(91,956)	—	90,118	—	1,838	—	—
Allocation of owner’s net equity— Permian and Williston Basin Assets	(96,877)	—	94,595	—	2,282	—	—
Allocation of owner’s net equity— Arkoma Basin Assets	(17,282)	—	16,874	—	408	—	—
Allocation of owner’s net equity— Williston Basin Assets	(35,034)	—	34,209	—	825	—	—
Allocation of owner’s net equity— Rockies and Permian Basin Assets	(192,737)	—	188,197	—	4,540	—	—
Proceeds from issuance of common units, net of offering costs	—	9,864	193,863	284	(402)	—	193,461
Non-cash unit-based compensation	—	—	6,665	—	139	—	6,804
Cash distributions to unitholders ($0.053 per unit)	—	—	(1,311)	—	(27)	—	(1,338)
Net income attributable to owner related to pre-partnership and pre-IPO operations	40,682	—	—	—	—	—	40,682
Net loss attributable to unitholders	—	—	(18,587)	—	(389)	—	(18,976)
Balance at December31, 2007	$—	24,187	$630,852	505	$9,214	$ —	$640,066
Net distributions to owner	—	—	(47,629)	—	(1,166)	(1)	(48,796)
Deemed distributions to affiliates in connection with acquisition of the Permian and Williston Basin Assets	—	6,885	(122,083)	—	(2,944)	—	(125,027)
Issuance of common units in exchange for net profits interest in certain Crockett County properties	—	284	5,748	—	—	—	5,748
Non-cash unit-based compensation	—	—	5,180	—	83	—	5,263
Cash distributions to unitholders ($2.3111 per unit)	—	—	(73,234)	—	(1,167)	—	(74,401)
Vesting of phantom units	—	7	—	—	—	—	—
Conversion of management incentive units	—	1,715	—	—	—	—	—
Components of comprehensive income:
Net income attributable to owner related to pre-partnership operations of the Permian and Williston Basin Assets	—	—	3,321	—	80	—	3,401
Net income attributable to owner related to pre-partnership operations of the Arkoma Basin Assets	—	—	5,922	—	143	—	6,065
Net income attributable to owner related to pre-partnership operations of the Williston Basin Assets	—	—	6,637	—	164	—	6,801
Net income attributable to owner related to pre-partnership operations of the Rockies and Permian Basin Assets	—	—	34,540	—	833	—	35,373
Net income attributable to unitholders	—	—	166,822	—	2,294	—	169,116
Change in deferred hedge loss on interest rate swaps, net of tax of $12	—	—	—	—	—	(4,258)	(4,258)
Total comprehensive income							216,498
Balance at December31, 2008	$—	33,078	$616,076	505	$7,534	$ (4,259)	$619,351
Net distributions to owner	—	—	(11,137)	—	(272)	—	(11,409)
Deemed distributions in connection with acquisition of the Arkoma Basin Assets	—	—	(45,333)	—	(1,088)	—	(46,421)
Deemed distributions in connection with acquisition of the Williston Basin Assets	—	—	(24,593)	—	(593)	—	(25,186)
Deemed distributions in connection with acquisition of the Rockies and Permian Basin Assets	—	—	(175,408)	—	(4,232)	—	(179,640)
Proceeds from issuance of common units, net of offering costs	—	12,190	170,000	—	(114)	—	169,886
Non-cash unit-based compensation	—	—	560	—	5	—	565
Cash distributions to unitholders ($2.05 per unit)	—	—	(80,617)	—	(1,035)	—	(81,652)
Vesting of phantom units and conversion of management incentive units	—	17	—	—	—	—	—
Components of comprehensive loss:
Net loss attributable to owners prior to acquisition of the Williston Basin Assets	—	—	(188)	—	(5)	—	(193)
Net income attributable to owners prior to acquisition of the Rockies and Permian Basin Assets	—	—	360	—	9	—	369
Net loss attributable to unitholders	—	—	(39,943)	—	(562)	—	(40,505)
Change in deferred hedge loss on interest rate swaps, net of tax of $2	—	—	—	—	—	839	839
Total comprehensive loss							(39,490)
Balance at December31, 2009	$—	45,285	$409,777	505	$(353)	$ (3,420)	$406,004

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

ENCORE ENERGY PARTNERS LP

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Year Ended December 31,
	2009			2008			2007
	(In thousands)
Cash flows from operating activities:
Net income (loss)	$	(40,329	)	$	220,756		$	21,706
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion, depreciation, and amortization		56,757			57,537			47,494
Non-cash exploration expense		—			13			23
Deferred taxes		(286	)		322			16
Non-cash unit-based compensation expense		565			5,232			6,804
Non-cash derivative loss (gain)		117,685			(92,286	)		27,543
Other		5,207			1,012			695
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable		(10,591	)		12,437			(20,203	)
Current derivatives		(2,020	)		(9,586	)		(2,700	)
Other current assets		(221	)		(176	)		(417	)
Long-term derivatives		(9,072	)		(6,881	)		(19,717	)
Other assets		(3	)		578			(812	)
Accounts payable		(2,555	)		(1,748	)		3,268
Other current liabilities		(167	)		2,025			9,669
Net cash provided by operating activities		114,970			189,235			73,369
Cash flows from investing activities:
Purchases of other property and equipment		(88	)		(315	)		(510	)
Acquisition of oil and natural gas properties		(31,960	)		(215	)		(495,252	)
Development of oil and natural gas properties		(9,037	)		(41,803	)		(29,010	)
Net cash used in investing activities		(41,085	)		(42,333	)		(524,772	)
Cash flows from financing activities:
Proceeds from issuance of common units, net of issuance costs		170,089			—			193,461
Proceeds from long-term debt, net of issuance costs		227,061			243,310			270,758
Payments on long-term debt		(125,000	)		(141,000	)		(225,000	)
Deemed distributions to affiliates in connection with acquisitions		(251,247	)		(125,027	)		—
Cash distributions to unitholders		(81,652	)		(74,401	)		(1,338	)
Contribution by EAC in connection with purchase of Elk Basin Assets		—			—			93,658
Net contributions from (distributions to) owner related to pre-partnership or pre-IPO operations		(11,409	)		(48,796	)		119,867
Other		(592	)		(372	)		—
Net cash provided by (used in) financing activities		(72,750	)		(146,286	)		451,406
Increase in cash and cash equivalents		1,135			616			3
Cash and cash equivalents, beginning of period		619			3			—
Cash and cash equivalents, end of period	$	1,754		$	619		$	3

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

ENCORE ENERGY PARTNERS LP

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1. Formation of the Partnership and Description of Business

Encore Energy Partners LP (together with its subsidiaries, “ENP”), a Delaware limited partnership, was formed by Encore Acquisition Company (together with its subsidiaries, “EAC”), a publicly traded Delaware corporation, to acquire, exploit, and develop oil and natural gas properties and to acquire, own, and operate related assets. Encore Energy Partners GP LLC (the “General Partner”), a Delaware limited liability company and indirect wholly owned subsidiary of EAC, serves as ENP’s general partner and Encore Energy Partners Operating LLC (“OLLC”), a Delaware limited liability company and direct wholly owned subsidiary of ENP, owns and operates ENP’s properties. ENP’s properties and oil and natural gas reserves are located in four core areas:

·	the Big Horn Basin in Wyoming and Montana;

·	the Permian Basin in West Texas and New Mexico;

·	the Williston Basin in North Dakota and Montana; and

·	the Arkoma Basin in Arkansas and Oklahoma.

EAC’s Merger with Denbury

On October 31, 2009, EAC, the ultimate parent of the General Partner, entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Denbury Resources Inc. (“Denbury”) pursuant to which EAC has agreed to merge with and into Denbury, with Denbury as the surviving entity (the “Merger”). The Merger Agreement, which was unanimously approved by EAC’s Board of Directors and by Denbury’s Board of Directors, provides for Denbury’s acquisition of all of the issued and outstanding shares of EAC common stock. Completion of the Merger is conditioned upon, among other things, approval by the stockholders of both EAC and Denbury.

Initial Public Offering and Concurrent Transactions

In September 2007, ENP completed its initial public offering (“IPO”) of 9,000,000 common units at a price to the public of $21.00 per unit. In October 2007, the underwriters exercised in full their over-allotment option to purchase an additional 1,148,400 common units. The net proceeds of approximately $193.5 million, after deducting the underwriters’ discount and a structuring fee of approximately $14.9 million, in the aggregate, and offering expenses of approximately $4.7 million, were used to repay in full $126.4 million of outstanding indebtedness under a subordinated credit agreement with EAP Operating, LLC (“EAP Operating”), a Delaware limited liability company and direct wholly owned subsidiary of EAC, and reduce outstanding borrowings under OLLC’s revolving credit facility . Please read “Note 6. Long-Term Debt” for additional discussion of ENP’s long-term debt.

At the closing of the IPO, the following transactions, among others, were completed:

(a) ENP entered into a contribution, conveyance and assumption agreement (the “Contribution Agreement”) with the General Partner, OLLC, EAC, Encore Operating, L.P. (“Encore Operating”), a Texas limited partnership and indirect wholly owned subsidiary of EAC, and Encore Partners LP Holdings LLC, a Delaware limited liability company and direct wholly owned subsidiary of EAC. The following transactions, among others, occurred pursuant to the Contribution Agreement:

·	Encore Operating contributed certain oil and natural gas properties and related assets in the Permian Basin in West Texas (the “Permian Basin Assets”) to ENP in exchange for 4,043,478 common units; and

·	EAC agreed to indemnify ENP for certain environmental liabilities, tax liabilities, and title defects, as well as defects relating to retained assets and liabilities, occurring or existing before the closing.

These transfers and distributions were made in a series of steps outlined in the Contribution Agreement. In connection with the issuance of the common units by ENP in exchange for the Permian Basin Assets, the IPO, and the exercise of the underwriters’ over-allotment option to purchase additional common units, the General Partner exchanged such number of common units for general partner units as was necessary to enable it to maintain its then two percent general partner interest in ENP. The General Partner received the common units through capital contributions from EAC of common units it owned.

(b) ENP entered into an administrative services agreement (the “Administrative Services Agreement”) with the General Partner, OLLC, Encore Operating, and EAC pursuant to which Encore Operating performs administrative services for ENP. Please read “Note 11. Related Party Transactions” for additional discussion regarding the Administrative Services Agreement.

(c) The Encore Energy Partners GP LLC Long-Term Incentive Plan (the “LTIP”) was adopted by the board of directors of the General Partner. Please read “Note 9. Unit-Based Compensation Plans” for additional discussion regarding the LTIP.

Note 2. Summary of Significant Accounting Policies

Principles of Consolidation

ENP’s consolidated financial statements include the accounts of its wholly owned subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation.

As discussed in “Note 1. Formation of the Partnership and Description of Business,” upon completion of ENP’s IPO, EAC contributed the Permian Basin Assets to ENP. The Permian Basin Assets are considered the predecessor to ENP (the “Predecessor”), and therefore, the historical results of operations of ENP include the results of operations of the Permian Basin Assets for all periods presented.

In February 2008, ENP acquired certain oil and natural gas properties and related assets in the Permian Basin in West Texas and in the Williston Basin in North Dakota (the “Permian and Williston Basin Assets”) from Encore Operating. In January 2009, ENP acquired certain oil and natural gas properties and related assets in the Arkoma Basin in Arkansas and royalty interest properties primarily in Oklahoma, as well as 10,300 unleased mineral acres (the “Arkoma Basin Assets”) from Encore Operating. In June 2009, ENP acquired certain oil and natural gas properties and related assets in the Williston Basin in North Dakota and Montana (the “Williston Basin Assets”) from Encore Operating. In August 2009, ENP acquired certain oil and natural gas properties and related assets in the Big Horn Basin in Wyoming, the Permian Basin in West Texas and New Mexico, and the Williston Basin in Montana and North Dakota (the “Rockies and Permian Basin Assets”) from Encore Operating. Because these assets were acquired from an affiliate, the acquisitions were accounted for as transactions between entities under common control, similar to a pooling of interests, whereby the assets and liabilities of the acquired properties were recorded at Encore Operating’s carrying value and ENP’s historical financial information was recast to include the acquired properties for all periods in which the properties were owned by Encore Operating. Accordingly, the consolidated financial statements and notes thereto reflect the historical results of ENP combined with those of the Permian and Williston Basin Assets, the Arkoma Basin Assets, the Williston Basin Assets, and the Rockies and Permian Basin Assets. Please read “Note 3. Acquisitions” for a dditional discussion of these acquisitions.

The results of operations of the Williston Basin Assets and the Rockies and Permian Basin Assets related to pre-partnership operations were allocated to the EAC affiliates based on their respective ownership percentages in ENP. The effect of recasting ENP’s consolidated financial statements to account for this common control transaction increased ENP’s net income by approximately $42.2 million and $23.9 million in 2008 and 2007, respectively.

ENP, the Permian Basin Assets, the Permian and Williston Basin Assets, the Arkoma Basin Assets, Williston Basin Assets, and the Rockies and Permian Basin Assets were owned by EAC prior to the closing of the IPO, with the exception of management incentive units owned by certain executive officers of the General Partner.

Use of Estimates

Preparing financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make certain estimations and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses, and the disclosure of contingent assets and liabilities in the consolidated financial statements. Actual results could differ materially from those estimates.

Estimates made in preparing these consolidated financial statements include, among other things, estimates of the proved oil and natural gas reserve volumes used in calculating depletion, depreciation, and amortization (“DD&A”) expense; the estimated future cash flows and fair value of properties used in determining the need for any impairment write-down; operating costs accrued; volumes and prices for revenues accrued; estimates of the fair value of unit-based compensation awards; and the timing and amount of future abandonment costs used in calculating asset retirement obligations. Changes in the assumptions used could have a significant impact on reported results in future periods.

Cash and Cash Equivalents

Cash and cash equivalents include cash in banks, money market accounts, and all highly liquid investments with an original maturity of three months or less. On a bank-by-bank basis and considering legal right of offset, cash accounts that are overdrawn are reclassified to current liabilities and any change in cash overdrafts is shown as “Change in cash overdrafts” in the “Financing activities” section of ENP’s Consolidated Statements of Cash Flows.

Prior to the formation of ENP, EAC provided cash as needed to support the operations of the Predecessor and collected cash from sales of production. Net cash received by or paid to EAC for periods prior to the properties’ ownership by ENP is reflected as net contributions from owner or net distributions to owner on the accompanying Consolidated Statements of Partners’ Equity and Comprehensive Income (Loss) and Consolidated Statements of Cash Flows.

The following table sets forth supplemental disclosures of cash flow information for the periods indicated:

	Year Ended December 31,
	2009		2008		2007
	(In thousands)
Cash paid during the period for:
Interest	$	9,761	$	6,614	$	11,857
Income taxes		297		—		—
Non-cash investing and financing activities:
Contribution of commodity derivative contracts from EAC		—		—		9,404
Contribution of Permian Basin Assets from EAC		—		—		26,229
Issuance of common units in connection with acquisition of net profits interest in certain Crockett County properties(a)		—		5,748		—
Issuance of common units in connection with acquisition of the Permian and Williston Basin Assets(a)		—		125,027		—

(a) Please read “Note 3. Acquisitions” for additional discussion.

Accounts Receivable

Trade accounts receivable, which are primarily from oil and natural gas sales, are recorded at the invoiced amount and do not bear interest. ENP routinely reviews outstanding accounts receivable balances and assesses the financial strength of its customers and records a reserve for amounts not expected to be fully recovered. Actual balances are not applied against the reserve until substantially all collection efforts have been exhausted. At December 31, 2009 and 2008, ENP had no allowance for doubtful accounts.

Properties and Equipment

Oil and Natural Gas Properties. ENP uses the successful efforts method of accounting for its oil and natural gas properties under Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 932 (formerly Statement of Financial Accounting Standards (“SFAS”) No. 19, “Financial Accounting and Reporting by Oil and Gas Producing Companies”). Under this method, all costs associated with productive and nonproductive development wells are capitalized. Exploration expenses, including geological and geophysical expenses and delay rentals, are charged to expense as incurred. Costs associated with drilling exploratory w ells are initially capitalized pending determination of whether the well is economically productive or nonproductive.

If an exploratory well does not find reserves or does not find reserves in a sufficient quantity as to make them economically producible, the previously capitalized costs would be expensed in ENP’s Consolidated Statements of Operations and shown as an adjustment to net income (loss) in the “Operating activities” section of ENP’s Consolidated Statements of Cash Flows in the period in which the determination was made. If an exploratory well finds reserves but they cannot be classified as proved, ENP continues to capitalize the associated cost as long as the well has found a sufficient quantity of reserves to justify its completion as a producing well and ENP is making sufficient progress in assessing the reserves and the operating viability of the project. If subsequently it is determined that these conditions do not continue to exist, all previously capitalized costs associated with the exploratory well would be expensed and shown as an adjustment to net income (loss) in the “Operating activities” section of ENP’s Consolidated Statements of Cash Flows in the period in which the determination was made. Re-drilling or directional drilling in a previously abandoned well is classified as development or exploratory based on whether it is in a proved or unproved reservoir. Costs for repairs and maintenance to sustain or increase production from the existing producing reservoir are charged to expense as incurred. Costs to recomplete a well in a different unproved reservoir are capitalized pending determination that economic reserves have been added. If the recompletion is unsuccessful, the costs would be charged to expense. All capitalized costs associated with both development and exploratory wells are shown as “Development of oil and natural gas properties” in the “Investing activities” section of ENP’s Consolidated Statements of Cash Flows.

Significant tangible equipment added or replaced that extends the useful or productive life of the property is capitalized. Costs to construct facilities or increase the productive capacity from existing reservoirs are capitalized. Capitalized costs are amortized on a unit-of-production basis over the remaining life of proved developed reserves or total proved reserves, as applicable. Natural gas volumes are converted to barrels of oil equivalent (“BOE”) at the rate of six thousand cubic feet (“Mcf”) of natural gas to one barrel (“Bbl”) of oil.

The costs of retired, sold, or abandoned properties that constitute part of an amortization base are charged or credited, net of proceeds received, to accumulated DD&A.

Miller and Lents, Ltd., ENP’s independent reserve engineer, estimates ENP’s reserves annually on December 31. This results in a new DD&A rate which ENP uses for the preceding fourth quarter after adjusting for fourth quarter production. ENP internally estimates reserve additions and reclassifications of reserves from proved undeveloped to proved developed at the end of the first, second, and third quarters for use in determining a DD&A rate for the respective quarter.

In accordance with ASC 360-10, 205, 840, 958, and 855-10-60-1 (formerly SFAS No. 144, “Accounting for the Impairment or Disposal of Long-Lived Assets”) ENP assesses the need for an impairment of long-lived assets to be held and used, including proved oil and natural gas properties, whenever events and circumstances indicate that the carrying value of the asset may not be recoverable. If impairment is indicated based on a comparison of the asset’s carrying value to its undiscounted expected future net cash flows, then an impairment charge is recognized to the extent the asset’s carrying value exceeds its fair value. Expected future net cash flows are based on existing proved reserves (and appropriately risk-adjusted probable reserves), f orecasted production information, and management’s outlook of future commodity prices. Any impairment charge incurred is expensed and reduces the net basis in the asset. Management aggregates proved property for impairment testing the same way as for calculating DD&A. The price assumptions used to calculate undiscounted cash flows is based on judgment. ENP uses prices consistent with the prices it believes a market participant would use in bidding on acquisitions and/or assessing capital projects. These price assumptions are critical to the impairment analysis as lower prices could trigger impairment.

Unproved properties, the majority of which relate to the acquisition of leasehold interests, are assessed for impairment on a property-by-property basis for individually significant balances and on an aggregate basis for individually insignificant balances. If the assessment indicates impairment, a loss is recognized by providing a valuation allowance at the level at which impairment was assessed. The impairment assessment is affected by economic factors such as the results of exploration activities, commodity price outlooks, remaining lease terms, and potential shifts in business strategy employed by management. In the case of individually insignificant balances, the amount of the impairment loss recognized is determined by amortizing the portion of these properties’ costs which ENP believes will n ot be transferred to proved properties over the remaining life of the lease.

Amounts shown in the accompanying Consolidated Balance Sheets as “Proved properties, including wells and related equipment” consisted of the following as of the dates indicated:

	December 31,
	2009		2008
	(In thousands)
Proved leasehold costs	$	609,692	$	580,695
Wells and related equipment— Completed		241,953		227,970
Wells and related equipment— In process		188		6,238
Total proved properties	$	851,833	$	814,903

Other Property and Equipment. Other property and equipment is carried at cost. Depreciation is expensed on a straight-line basis over estimated useful lives, which range from three to seven years. Gains or losses from the disposal of other property and equipment are recognized in the period realized and included in “Other operating expense” in the accompanying Consolidated Statements of Operations.

Goodwill and Other Intangible Assets

ENP accounts for goodwill and other intangible assets under the provisions of ASC 350, 730-10-60-3, 323-10-35-13, 205-20-60-4, and 280-10-60-2 (formerly SFAS No. 142, “Goodwill and Other Intangible Assets”). Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in business combinations. Goodwill is tested for impairment annually on December 31 or whenever indicators of impairment exist. The goodwill test is performed at the reporting unit level. ENP has determined that it has only one reporting unit, which is oil and natural gas production in the United States. If indicators of impairment are determined to exist, an impairment charge is recognized for the amoun t by which the carrying value of goodwill exceeds its implied fair value.

ENP utilizes both a market capitalization and an income approach to determine the fair value of its reporting units. The primary component of the income approach is the estimated discounted future net cash flows expected to be recovered from the reporting unit’s oil and natural gas properties. ENP’s analysis concluded that there was no impairment of goodwill as of December 31, 2009. Significant decreases in the prices of oil and natural gas or significant negative reserve adjustments from the December 31, 2009 assessment could change ENP’s estimates of the fair value of its reporting units and could result in an impairment charge.

Intangible assets with definite useful lives are amortized over their estimated useful lives. In accordance with ASC 410-20, 450-20, 835-20, 360-10-35, 840-10, and 980-410, ENP evaluates the recoverability of intangible assets with definite useful lives whenever events or changes in circumstances indicate that the carrying value of the asset may not be fully recoverable. An impairment loss exists when the estimated undiscounted cash flows expected to result from the use of the asset and its eventual disposition are less than its carrying amount.

ENP is a party to a contract allowing it to purchase a certain amount of natural gas at a below market price for use as field fuel. As of December 31, 2009, the gross carrying value of this contact was $4.2 million and accumulated amortization was $0.9 million. During each of 2009, 2008, and 2007, ENP recorded approximately $0.3 million of amortization expense related to this contract. The net carrying value is shown as “Other intangibles, net” on the accompanying Consolidated Balance Sheets and is being amortized on a straight-line basis through November 2020. ENP expects to recognize $0.3 million of amortization expense during each of the next five years related to this contract.

Asset Retirement Obligations

In accordance with ASC 410-20, 450-20, 835-20, 360-10-35, 840-10, and 980-410 (formerly SFAS No. 143, “Accounting for Asset Retirement Obligations”), ENP recognizes the fair value of a liability for an asset retirement obligation in the period in which the liability is incurred. For oil and natural gas properties, this is the period in which the property is acquired or a new well is drilled. An amount equal to and offsetting the liability is capitalized as part of the carrying amount of ENP’s oil and natural gas properties. The liability is recorded at its discounted risk adjusted fair value and then accreted each period until it is settled or the asset is sold, at which time the liability is reversed. Estimates are base d on historical experience in plugging and abandoning wells and estimated remaining field life based on reserve estimates. Please read “Note 5. Asset Retirement Obligations” for additional information.

Unit-Based Compensation

ENP does not have any employees. However, the LTIP allows for the grant of unit awards and unit-based awards for employees, consultants, and directors of EAC, the General Partner, and any of their affiliates that perform services for ENP. ENP accounts for unit-based compensation according to the provisions of ASC 718, 505-50, and 260-10-60-1A (formerly SFAS No. 123 (revised 2004), “Share-Based Payment”), which requires the recognition of compensation expense for unit-based awards over the requisite service period in an amount equal to the grant date fair value of the awards. Please read “Note 9. Unit-Based Compensation Plans” for additional discussion of ENP’s unit-based compensation plans.

Segment Reporting

ENP operates in only one industry: the oil and natural gas exploration and production industry in the United States. All revenues are derived from customers located in the United States.

Major Customers / Concentration of Credit Risk

The following purchasers accounted for 10 percent or greater of the sales of production for the period indicated:

	Percentage of Total Sales of
	Production for the Year Ended
	December 31,
Purchaser	2009	2008	2007
Marathon Oil Corporation	43%	19%	24%
ConocoPhillips	(a)	17%	10%
Tesoro Refining & Marketing Co	(a)	15%	17%

(a) Less than 10 percent for the period indicated.

Income Taxes

ENP is treated as a partnership for federal and state income tax purposes with each partner being separately taxed on his share of ENP’s taxable income. Therefore, no provision for current or deferred federal income taxes has been provided for in the accompanying consolidated financial statements. However, the portion of ENP’s operations that is located in Texas is subject to an entity-level tax, the Texas margin tax, at an effective rate of up to 0.7 percent of income that is apportioned to Texas beginning with tax reports due on or after January 1, 2008. Deferred tax assets and liabilities are recognized for future Texas margin tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective Texas margin tax bas es.

Net income for financial statement purposes may differ significantly from taxable income reportable to unitholders as a result of differences between the tax bases and financial reporting bases of assets and liabilities and the taxable income allocation requirements under the partnership agreement. In addition, individual unitholders have different investment bases depending upon the timing and price of acquisition of their common units, and each unitholder’s tax accounting, which is partially dependent upon the unitholder’s tax position, differs from the accounting followed in the consolidated financial statements. As a result, the aggregate difference in the basis of net assets for financial and tax reporting purposes cannot be readily determined as ENP does not have access to information about each un itholder’s tax attributes in ENP.

ENP accounts for uncertainty in income taxes in accordance with ASC 740, 805-740, and 835-10 (formerly FASB Interpretation No. 48, “Accounting for Uncertainty in Income Taxes — an Interpretation of FASB Statement No. 109”). ENP performs a periodic evaluation of tax positions to review the appropriate recognition threshold for each tax position recognized in its consolidated financial statements. As of December 31, 2009 and 2008, all of ENP’s tax positions met the “more-likely-than-not” threshold prescribed by ASC 740, 805-740, and 835-10. As a result, no additional tax expense, interest, or penalties have been accrued.

Oil and Natural Gas Revenue Recognition

Oil and natural gas revenues are recognized as oil and natural gas is produced and sold, net of royalties. Royalties and severance taxes are incurred based upon the actual price received from the sales. To the extent actual volumes and prices of oil and natural gas are unavailable for a given reporting period because of timing or information not received from third parties, the expected sales volumes and prices for those properties are estimated and recorded as “Accounts receivable — trade” in the accompanying Consolidated Balance Sheets. Natural gas revenues are reduced by any processing and other fees incurred except for transportation costs paid to third parties, which are recorded as “Other operating expense” in the accompanying Consolidated Statements of Operations. ; Natural gas revenues are recorded using the sales method of accounting whereby revenue is recognized based on actual sales of natural gas rather than ENP’s proportionate share of natural gas production. If ENP’s overproduced imbalance position (i.e., ENP has cumulatively been over-allocated production) is greater than ENP’s share of remaining reserves, a liability is recorded for the excess at period-end prices unless a different price is specified in the contract in which case that price is used. Revenue is not recognized for the production in tanks, oil marketed on behalf of joint owners in ENP’s properties, or oil in pipelines that has not been delivered to the purchaser.

Natural gas imbalances at December 31, 2009 and 2008 were 15,139 million British thermal units (“MMBtu”) and 38,010 MMBtu, respectively, over-delivered to ENP, the value of which was approximately $0.1 million and $0.2 million, respectively.

Marketing Revenues and Expenses

In March 2007, ENP acquired a crude oil pipeline and a natural gas pipeline as part of the Big Horn Basin acquisition. Natural gas volumes are purchased from numerous gas producers at the inlet of the pipeline and resold downstream to various local and off-system markets. In addition, pipeline tariffs are collected for transportation through the crude oil pipeline.

Marketing revenues includes the sales of oil and natural gas purchased from third parties, as well as pipeline tariffs charged for transportation volumes through ENP’s pipelines. Marketing revenues derived from sales of oil or natural gas purchased from third parties are recognized when persuasive evidence of a sales arrangement exists, delivery has occurred, the sales price is fixed or determinable, and collectibility is reasonably assured. As ENP takes title to the oil and natural gas and has risks and rewards of ownership, these transactions are presented gross in the accompanying Consolidated Statements of Operations, unless they meet the criteria for netting as outlined in ASC 845-10 (formerly Emerging Issues Task Force (“EITF”) Issue No. 04-13, “Accounting for Purchases and Sales of Inventory with the Same Counterparty”).

Shipping Costs

Shipping costs in the form of pipeline fees and trucking costs paid to third parties are incurred to transport oil and natural gas production from certain properties to a different market location for ultimate sale. These costs are included in “Other operating expense” and “Marketing expense,” as applicable, in the accompanying Consolidated Statements of Operations.

Derivatives

ENP uses various financial instruments for non-trading purposes to manage and reduce price volatility and other market risks associated with its oil and natural gas production. These arrangements are structured to reduce ENP’s exposure to commodity price decreases, but they can also limit the benefit ENP might otherwise receive from commodity price increases. ENP’s risk management activity is generally accomplished through over-the-counter derivative contracts with large financial institutions. ENP also use derivative instruments in the form of interest rate swaps, which hedge its risk related to interest rate fluctuation.

ENP applies the provisions of ASC 815 (formerly SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities”), which requires each derivative instrument to be recorded in the balance sheet at fair value. If a derivative has not been designated as a hedge or does not otherwise qualify for hedge accounting, it must be adjusted to fair value through earnings. However, if a derivative qualifies for hedge accounting, depending on the nature of the hedge, the effective portion of changes in fair value can be recognized in accumulated other comprehensive income or loss until such time as the hedged item is recognized in earnings. In order to qualify for cash flow hedge accounting, the cash flows from the hedging instrument must be highly effective in offsetting changes in cash flows of the hedged item. In addition, all hedging relationships must be designated, documented, and reassessed periodically.

ENP has elected to designate its outstanding interest rate swaps as cash flow hedges. The effective portion of the mark-to-market gain or loss on these derivative instruments is recorded in “Accumulated other comprehensive loss” on the accompanying Consolidated Balance Sheets and reclassified into earnings in the same period in which the hedged transaction affects earnings. Any ineffective portion of the mark-to-market gain or loss is recognized in earnings and included in “Derivative fair value loss (gain)” in the accompanying Consolidated Statements of Operations.

ENP has not elected to designate its current portfolio of commodity derivative contracts as hedges. Therefore, changes in fair value of these derivative instruments are recognized in earnings and included in “Derivative fair value loss (gain)” in the accompanying Consolidated Statements of Operations.

Earnings Per Unit

ENP’s net income (loss) is allocated to partner equity accounts in accordance with the provisions of the partnership agreement. For purposes of calculating earnings per unit, ENP allocates net income (loss) to its limited partners and participating securities, including general partner units, each quarter under the provisions of ASC 260-10 (formerly EITF Issue No. 03-6, “Participating Securities and the Two {d208} Class Method under FASB Statement No. 128”). Under the two-class method of calculating earnings per unit, earnings are allocated to participating securities as if all the earnings for the period had been distributed. A participating security is any security that may participate in distributions with common units. 60;For purposes of calculating earnings per unit, general partner units, unvested phantom units, and unvested management incentive units are considered participating securities. Net income (loss) per common unit is calculated by dividing the limited partners’ interest in net income (loss), after deducting the interests of participating securities, by the weighted average common units outstanding. Please read “New Accounting Pronouncements” below and “Note 8. Earnings Per Unit” for additional discussion.

Comprehensive Income (Loss)

ENP has elected to show comprehensive income (loss) as part of its Consolidated Statements of Partners’ Equity and Comprehensive Income (Loss) rather than in its Consolidated Statements of Operations or in a separate statement.

FASB Launches Accounting Standards Codification

In June 2009, the FASB issued ASC 105-10 (formerly SFAS No. 168, “The FASB Accounting Standards Codification and the Hierarchy of Generally Accepted Accounting Principles”). ASC 105-10 establishes the Codification as the sole source of authoritative accounting principles recognized by the FASB to be applied by all nongovernmental entities in the preparation of financial statements in conformity with GAAP. ASC 105-10 was prospectively effective for financial statements issued for fiscal years ending on or after September 15, 2009, and interim periods within those fiscal years. The adoption of ASC 105-10 on July 1, 2009 did not impact ENP’s results of operations or financial condition.

Following the Codification, the FASB does not issue new standards in the form of Statements, FASB Staff Positions (“FSP”), or EITF Abstracts. Instead, it issues Accounting Standards Updates (“ASU”), which update the Codification, provide background information about the guidance, and provide the basis for conclusions on the changes to the Codification.

The Codification did not change GAAP; however, it did change the way GAAP is organized and presented. As a result, these changes impact how companies, including ENP, reference GAAP in their financial statements and in their significant accounting policies.

New Accounting Pronouncements

ASC 820-10 (formerly FSP No. FAS 157-2, “Effective Date of FASB Statement No. 157”)

In February 2008, the FASB issued ASC 820-10, which delayed the effective date of ASC 820-10 for one year for nonfinancial assets and liabilities, except those that are recognized or disclosed at fair value in the financial statements on a recurring basis (at least annually). ASC 820-10 was prospectively effective for financial statements issued for fiscal years beginning after November 15, 2008, and interim periods within those fiscal years. ENP elected a partial deferral of ASC 820-10 for all instruments within the scope of ASC 820-10, including, but not limited to, its asset retirement obligations and indefinite lived assets. The adoption of ASC 820-10 on January 1, 2009 as it relates to nonfinancial assets and liabilities did not have a material impact on ENP’s results of operations or financial condition. Please read “Note 10. Fair Value Measurements” for additional discussion.

ASC 805 (formerly SFAS No. 141 (revised 2007), “Business Combinations”)

In December 2007, the FASB issued ASC 805, which establishes principles and requirements for the reporting entity in a business combination, including: (1) recognition and measurement in the financial statements of the identifiable assets acquired, the liabilities assumed, and any noncontrolling interest in the acquiree; (2) recognition and measurement of goodwill acquired in the business combination or a gain from a bargain purchase; and (3) determination of the information to be disclosed to enable financial statement users to evaluate the nature and financial effects of the business combination. In April 2009, the FASB issued ASC 805-20 (formerly FSP No. FAS 141(R)-1, “Accounting for Assets Acquired and Liabilities Assumed in a Business Combination That Arises from Contingencies”), which amends and cl arifies ASC 805 to address application issues, including: (1) initial recognition and measurement; (2) subsequent measurement and accounting; and (3) disclosure of assets and liabilities arising from contingencies in a business combination. ASC 805 and ASC 805-20 were prospectively effective for business combinations consummated in fiscal years beginning on or after December 15, 2008. The accounting for transactions between entities under common control is unchanged under ASC 805 and ASC 805-20. The application of ASC 805 and ASC 805-20 to the acquisition of certain oil and natural gas properties and related assets during 2009 was nominal. Please read “Note 3. Acquisitions” for additional discussion.

ASC 815-10 (formerly SFAS No. 161, “Disclosures about Derivative Instruments and Hedging Activities — an amendment of FASB Statement No. 133”)

In March 2008, the FASB issued ASC 815-10, which requires enhanced disclosures: including (1) how and why an entity uses derivative instruments; (2) how derivative instruments and related hedged items are accounted for under ASC 815; and (3) how derivative instruments and related hedged items affect an entity’s financial position, financial performance, and cash flows. ASC 815-10 was prospectively effective for financial statements issued for fiscal years beginning on or after November 15, 2008, and interim periods within those fiscal years. The adoption of ASC 815-10 on January 1, 2009 required additional disclosures regarding ENP’s derivative instruments; however, it did not impact ENP’s results of operations or financial condition. Please read “Note 10. Fair Value Mea surements” for additional discussion.

ASC 260-10 (formerly EITF Issue No. 07-4, “Application of the Two-Class Method under FASB Statement No. 128, Earnings per Share, to Master Limited Partnerships”)

In March 2008, the FASB issued ASC 260-10, which addresses how master limited partnerships should calculate earnings per unit using the two-class method and how current period earnings of a master limited partnership should be allocated to the general partner, limited partners, and other participating securities. ASC 260-10 was retrospectively effective for financial statements issued for fiscal years beginning after December 15, 2008, and interim periods within those years. In the accompanying Consolidated Financial Statements, periods prior to the adoption of ASC 260-10 have been restated to calculate earnings per unit in accordance with this pronouncement. The retrospective application of ASC 260-10 reduced ENP’s basic and diluted earnings per common unit by $0.01 for the year ended December 31, 2007. The adoption of ASC 260-10 did not have an impact on ENP’s basic or diluted earnings per common unit for the year ended December 31, 2008. Please read “Note 8. Earnings Per Unit” for additional discussion.

ASC 260-10 (formerly FSP No. EITF 03-6-1, “Determining Whether Instruments Granted in Share-Based Payment Transactions Are Participating Securities”)

In June 2008, the FASB issued ASC 260-10, which addresses whether instruments granted in unit-based payment transactions are participating securities prior to vesting and, therefore, need to be included in the earnings allocation for computing basic earnings per unit under the two-class method. ASC 260-10 was retroactively effective for financial statements issued for fiscal years beginning after December 15, 2008, and interim periods within those years. In the accompanying Consolidated Financial Statements, periods prior to the adoption of ASC 260-10 have been restated to calculate earnings per unit in accordance with this pronouncement. Please read “Note 8. Earnings Per Unit” for additional discussion.

SEC Release No. 33-8995, “Modernization of Oil and Gas Reporting” (“Release 33-8995”)

In December 2008, the United States Securities and Exchange Commission (the “SEC”) issued Release 33-8995, which amends oil and natural gas reporting requirements under Regulations S-K and S-X. Release 33-8995 also adds a section to Regulation S-K (Subpart 1200) to codify the revised disclosure requirements in Securities Act Industry Guide 2, which is being phased out. Release 33-8995 permits the use of new technologies to determine proved reserves if those technologies have been demonstrated empirically to lead to reliable conclusions about reserves volumes. Release 33-8995 will also allow companies to disclose their probable and possible reserves to investors at the company’s option. In addition, the new disclosure requirements require companies to: (1) report the independence and qualifications of its reserves preparer or auditor; (2) file reports when a third party is relied upon to prepare reserves estimates or conduct a reserves audit; and (3) report oil and gas reserves using an average price based upon the prior 12-month period rather than a year-end price, unless prices are defined by contractual arrangements, excluding escalations based on future conditions. Release 33-8995 was prospectively effective for financial statements issued for fiscal years ending on or after December 31, 2009.

ASC 855-10 (formerly SFAS No. 165, “Subsequent Events”)

In June 2009, the FASB issued ASC 855-10 to establish general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued or available to be issued. In particular, ASC 855-10 sets forth: (1) the period after the balance sheet date during which management of a reporting entity should evaluate events or transactions that may occur for potential recognition or disclosure in the financial statements; (2) the circumstances under which an entity should recognize events or transactions occurring after the balance sheet date in its financial statements; and (3) the disclosures that an entity should make about events or transactions that occurred after the balance sheet date. ASC 855-10 was prospectively effective for financial statements issued for interim or annual periods ending after June 15, 2009. The adoption of ASC 855-10 on June 30, 2009 did not impact ENP’s results of operations or financial condition.

ASU No. 2009-05, “Fair Value Measurement and Disclosure: Measuring Liabilities at Fair Value” (“ASU 2009-05”)

In August 2009, the FASB issued ASU 2009-05 to provide clarification on measuring liabilities at fair value when a quoted price in an active market is not available. In particular, ASU 2009-05 specifies that a valuation technique should be applied that used either the quote of the liability when traded as an asset, the quoted prices for similar liabilities or similar liabilities when traded as assets, or another valuation technique consistent with existing fair value measurement guidance. ASU 2009-05 was prospectively effective for financial statements issued for interim or annual periods ending after October 1, 2009. The adoption of ASU 2009-05 on December 31, 2009 did not impact ENP’s results of operations or financial condition.

ASU No. 2010-03, “Oil and Gas Reserve Estimation and Disclosure” (“ASU 2010-03”)

In January 2010, the FASB issued ASU 2010-03 to align the oil and natural gas reserve estimation and disclosure requirements of Extractive Activities — Oil and Gas (ASC 932) with the requirements in the SEC’s final rule, “Modernization of the Oil and Gas Reporting.” ASU 2010-03 was prospectively effective for financial statements issued for annual periods ending on or after December 31, 2009.

ASU No. 2010-06, “Improving Disclosures about Fair Value Measurements” (“ASU 2010-06”)

In January 2010, the FASB issued ASU 2010-06 to require additional information to be disclosed principally in respect of level 3 fair value measurements and transfers to and from Level 1 and Level 2 measurements; in addition, enhanced disclosure is required concerning inputs and valuation techniques used to determine Level 2 and Level 3 fair value measurements. ASU 2010-06 was generally effective for interim and annual reporting periods beginning after December 15, 2009; however, the requirements to disclose separately purchases, sales, issuances, and settlements in the Level 3 reconciliation are effective for fiscal years beginning after December 15, 2010 (and for interim periods within such years) with early adoption allowed. The adoption of ASU 2010-06 on December 31, 2009 did not impact ENP’s results of op erations or financial condition.

Note 3. Acquisitions

Rockies and Permian Basin Assets

In August 2009, ENP acquired the Rockies and Permian Basin Assets from Encore Operating for approximately $179.6 million in cash, which was financed through borrowings under OLLC’s revolving credit facility and proceeds from the issuance of ENP common units to the public. As previously discussed, the acquisition was accounted for as a transaction between entities under common control. Therefore, the assets and liabilities of the acquired properties were recorded at Encore Operating’s carrying value as of July 31, 2009 of approximately $194.4 million and $4.2 million, respectively, and the historical financial information of ENP was recast to include the Rockies and Permian Basin Assets for all periods the properties were owned by Encore Operating. As the historical basis in the Rockies and Per mian Basin Assets is included in the accompanying Consolidated Balance Sheets, the cash purchase price was recorded as a deemed distribution when paid to EAC.

Williston Basin Assets

In June 2009, ENP acquired the Williston Basin Assets from Encore Operating for approximately $25.2 million in cash, which was financed through borrowings under OLLC’s revolving credit facility and proceeds from the issuance of ENP common units to the public. As previously discussed, the acquisition was accounted for as a transaction between entities under common control. Therefore, the assets and liabilities of the acquired properties were recorded at Encore Operating’s carrying value as of May 31, 2009 of approximately $31.9 million and $1.3 million, respectively, and the historical financial information of ENP was recast to include the Williston Basin Assets for all periods the properties were owned by Encore Operating. As the historical basis in the Williston Basin Assets is included in th e accompanying Consolidated Balance Sheets, the cash purchase price was recorded as a deemed distribution when paid to EAC.

Vinegarone Assets

In May 2009, ENP acquired certain natural gas properties in the Vinegarone Field in Val Verde County, Texas (the “Vinegarone Assets”) from an independent energy company for approximately $27.5 million in cash, which was financed through proceeds from the issuance of ENP common units to the public. The results of operations of the Vinegarone Assets are included with those of ENP from the date of acquisition forward.

Arkoma Basin Assets

In January 2009, ENP acquired the Arkoma Basin Assets from Encore Operating for approximately $46.4 million in cash, which was financed through borrowings under OLLC’s revolving credit facility. As previously discussed, the acquisition was accounted for as a transaction between entities under common control. Therefore, the assets and liabilities of the acquired properties were recorded at Encore Operating’s carrying value as of December 31, 2008 of approximately $18.1 million and $0.7 million, respectively, and the historical financial information of ENP was recast to include the Arkoma Basin Assets for all periods the properties were owned by Encore Operating. As the historical basis in the Arkoma Basin Assets is included in the accompanying Consolidated Balance Sheets, the cash purchase pric e was recorded as a deemed distribution when paid to EAC.

Permian and Williston Basin Assets

In February 2008, ENP acquired the Permian and Williston Basin Assets from Encore Operating for approximately $125.0 million in cash and the issuance of 6,884,776 ENP common units to Encore Operating. In determining the total purchase price, the common units were valued at $125.0 million. However, no accounting value was ascribed to the common units as the cash consideration exceeded Encore Operating’s carrying value of the properties. The cash portion of the purchase price was financed through borrowings under OLLC’s revolving credit facility. As previously discussed, the acquisition was accounted for as a transaction between entities under common control. Therefore, the assets and liabilities of the acquired properties were recorded at Encore Operating’s carrying value as of December 31, 2007 of approximately $105.0 million and $5.1 million, respectively, and the historical financial information of ENP was recast to include the Permian and Williston Basin Assets for all periods the properties were owned by Encore Operating. As the historical basis in the Permian and Williston Basin Assets is included in the accompanying Consolidated Balance Sheets, the cash purchase price was recorded as a deemed distribution when paid to EAC.

In May 2008, ENP acquired an existing net profits interest in certain of its properties in the Permian Basin in West Texas from an independent energy company for 283,700 ENP common units, which were valued at approximately $5.8 million at the time of the acquisition.

Big Horn Basin Assets

In March 2007, EAC acquired certain oil and natural gas properties and related assets in the Big Horn Basin in Wyoming and Montana (the “Big Horn Basin Assets”) from an independent energy company. Prior to closing, EAC assigned the rights and duties under the purchase and sale agreement relating to the Elk Basin Assets to ENP. The purchase price for the Elk Basin Assets was approximately $330.7 million in cash. The results of operations of the Big Horn Basin Assets are included with those of ENP from the date of acquisition forward.

ENP financed the acquisition of the Elk Basin Assets through a $93.7 million contribution from EAC, $120 million of borrowings under a subordinated credit agreement with EAP Operating, and borrowings under OLLC’s revolving credit facility. Please read “Note 6. Long-Term Debt” for additional discussion of ENP’s long-term debt.

The following unaudited pro forma condensed financial data for 2007 (in thousands, except per unit amounts) was derived from the historical financial statements of ENP and from the accounting records of the seller to give effect to the acquisition of the Elk Basin Assets as if it had occurred on January 1, 2007. The unaudited pro forma condensed financial information has been included for comparative purposes only and is not necessarily indicative of the results that might have occurred had the acquisition of the Elk Basin Assets taken place on January 1, 2007 and is not intended to be a projection of future results.

Pro forma total revenues	$	197,408
Pro forma net income	$	19,621

Pro forma net loss per common unit:
Basic	$	(0.79	)
Diluted	$	(0.79	)

Note 4. Commitments and Contingencies

Litigation

ENP is a party to ongoing legal proceedings in the ordinary course of business. The General Partner’s management does not believe the result of these proceedings will have a material adverse effect on ENP’s business, financial position, results of operations, liquidity, or ability to pay distributions.

Leases

ENP leases equipment that have non-cancelable lease terms in excess of one year. The following table summarizes by year the remaining non-cancelable future payments under these operating leases as of December 31, 2009 (in thousands):

2010	$	687
2011		687
2012		514
2013		—
2014		—
Thereafter		—
	$	1,888

ENP’s operating lease rental expense was approximately $1.1 million, $1.0 million, and $1.1 million in 2009, 2008, and 2007, respectively.

Note 5. Asset Retirement Obligations

Asset retirement obligations relate to future plugging and abandonment expenses on oil and natural gas properties and related facilities disposal. The following table summarizes the changes in ENP’s asset retirement obligations for the periods indicated:

	Year Ended December 31,
	2009			2008
	(In thousands)
Future abandonment liability at January 1	$	12,376		$	11,254
Acquisition of properties		67			—
Wells drilled		22			104
Accretion of discount		709			538
Plugging and abandonment costs incurred		(164	)		(62	)
Revision of previous estimates		120			542
Future abandonment liability at December 31	$	13,130		$	12,376

As of December 31, 2009, $12.6 million of ENP’s asset retirement obligations were long-term and recorded in “Future abandonment cost, net of current portion” and $0.6 million were current and included in “Other current liabilities” in the accompanying Consolidated Balance Sheets. Approximately $4.7 million of the long-term future abandonment liability represents the estimated cost for decommissioning the Elk Basin natural gas processing plant.

Note 6. Long-Term Debt

Revolving Credit Facility

OLLC is a party to a five-year credit agreement dated March 7, 2007 (as amended, the “OLLC Credit Agreement”). The OLLC Credit Agreement matures on March 7, 2012. In March 2009, OLLC amended the OLLC Credit Agreement to, among other things, increase the interest rate margins and commitment fees applicable to loans made under the OLLC Credit Agreement. In August 2009, OLLC amended the OLLC Credit Agreement to, among other things, (1) increase the borrowing base from $240 million to $375 million, (2) increase the aggregate commitments of the lenders from $300 million to $475 million, and (3) increase the interest rate margins and commitment fees applicable to loans made under the OLLC Credit Agreement. In November 2009, OLLC amended the OLLC Credit Agreement, which will be effective u pon the closing of the Merger, to, among other things, permit the consummation of the Merger from being a “Change of Control” under the OLLC Credit Agreement.

The OLLC Credit Agreement provides for revolving credit loans to be made to OLLC from time to time and letters of credit to be issued from time to time for the account of OLLC or any of its restricted subsidiaries. The aggregate amount of the commitments of the lenders under the OLLC Credit Agreement is $475 million. Availability under the OLLC Credit Agreement is subject to a borrowing base, which is redetermined semi-annually and upon requested special redeterminations. As of December 31, 2009, the borrowing base was $375 million and there were $255 million of outstanding borrowings and $120 million of borrowing capacity under the OLLC Credit Agreement.

OLLC incurs a commitment fee of 0.5 percent on the unused portion of the OLLC Credit Agreement.

Obligations under the OLLC Credit Agreement are secured by a first-priority security interest in substantially all of OLLC’s proved oil and natural gas reserves and in the equity interests of OLLC and its restricted subsidiaries. In addition, obligations under the OLLC Credit Agreement are guaranteed by ENP and OLLC’s restricted subsidiaries. Obligations under the OLLC Credit Agreement are non-recourse to EAC and its restricted subsidiaries.

Loans under the OLLC Credit Agreement are subject to varying rates of interest based on (1) amount outstanding in relation to the borrowing base and (2) whether the loan is a Eurodollar loan or a base rate loan. Eurodollar loans under the OLLC Credit Agreement bear interest at the Eurodollar rate plus the applicable margin indicated in the following table, and base rate loans under the OLLC Credit Agreement bear interest at the base rate plus the applicable margin indicated in the following table:

Ratio of Outstanding Borrowings to Borrowing Base	Applicable Margin for Eurodollar Loans			Applicable Margin for Base Rate Loans
Less than .50 to 1		2.250	%		1.250	%
Greater than or equal to .50 to 1 but less than .75 to 1		2.500	%		1.500	%
Greater than or equal to .75 to 1 but less than .90 to 1		2.750	%		1.750	%
Greater than or equal to .90 to 1		3.000	%		2.000	%

The “Eurodollar rate” for any interest period (either one, two, three, or six months, as selected by ENP) is the rate equal to the British Bankers Association London Interbank Offered Rate (“LIBOR”) for deposits in dollars for a similar interest period. The “Base Rate” is calculated as the highest of: (1) the annual rate of interest announced by Bank of America, N.A. as its “prime rate”; (2) the federal funds effective rate plus 0.5 percent; or (3) except during a “LIBOR Unavailability Period,” the Eurodollar rate (for dollar deposits for a one-month term) for such day plus 1.0 percent.

Any outstanding letters of credit reduce the availability under the OLLC Credit Agreement. Borrowings under the OLLC Credit Agreement may be repaid from time to time without penalty.

The OLLC Credit Agreement contains covenants including, among others, the following:

·	a prohibition against incurring debt, subject to permitted exceptions;

·	a prohibition against purchasing or redeeming capital stock, or prepaying indebtedness, subject to permitted exceptions;

·	a restriction on creating liens on the assets of ENP, OLLC, and OLLC’s restricted subsidiaries, subject to permitted exceptions;

·	restrictions on merging and selling assets outside the ordinary course of business;

·	restrictions on use of proceeds, investments, transactions with affiliates, or change of principal business;

·	a provision limiting oil and natural gas hedging transactions (other than puts) to a volume not exceeding 75 percent of anticipated production from proved producing reserves;

·	a requirement that ENP and OLLC maintain a ratio of consolidated current assets to consolidated current liabilities of not less than 1.0 to 1.0;

·	a requirement that ENP and OLLC maintain a ratio of consolidated EBITDA to the sum of consolidated net interest expense plus letter of credit fees of not less than 2.5 to 1.0; and

·	a requirement that ENP and OLLC maintain a ratio of consolidated funded debt to consolidated adjusted EBITDA of not more than 3.5 to 1.0.

As of December 31, 2009, ENP and OLLC were in compliance with all covenants of the OLLC Credit Agreement.

The OLLC Credit Agreement contains customary events of default including, among others, the following:

·	failure to pay principal on any loan when due;

·	failure to pay accrued interest on any loan or fees when due and such failure continues for more than three days;

·	failure to observe or perform covenants and agreements contained in the OLLC Credit Agreement, subject in some cases to a 30-day grace period after discovery or notice of such failure;

·	failure to make a payment when due on any other debt in a principal amount equal to or greater than $3 million or any other event or condition occurs which results in the acceleration of such debt or entitles the holder of such debt to accelerate the maturity of such debt;

·	the commencement of liquidation, reorganization, or similar proceedings with respect to OLLC or any guarantor under bankruptcy or insolvency law, or the failure of OLLC or any guarantor generally to pay its debts as they become due;

·	the entry of one or more judgments in excess of $3 million (to the extent not covered by insurance) and such judgment(s) remain unsatisfied and unstayed for 30 days;

·	the occurrence of certain ERISA events involving an amount in excess of $3 million;

·	there cease to exist liens covering at least 80 percent of the borrowing base properties; or

·	the occurrence of a change in control.

If an event of default occurs and is continuing, lenders with a majority of the aggregate commitments may require Bank of America, N.A. to declare all amounts outstanding under the OLLC Credit Agreement to be immediately due and payable.

Subordinated Credit Agreement

In March 2007, OLLC entered into a six-year subordinated credit agreement with EAP Operating pursuant to which a single subordinated term loan was made to ENP in the aggregate amount of $120 million. The total outstanding balance of $126.4 million, including accrued interest, was repaid in September 2007 using a portion of the net proceeds from the IPO at which point the credit agreement was terminated.

Long-Term Debt Maturities

The following table shows ENP’s long-term debt maturities as of December 31, 2009:

	Payments Due by Period
	Total		2010		2011		2012		2013		2014		Thereafter
	(In thousands)
Revolving credit facility	$	255,000	$	—	$	—	$	255,000	$	—	$	—	$	—

During 2009, 2008, and 2007, the weighted average interest rate for total indebtedness was 5.0 percent, 4.8 percent, and 8.9 percent, respectively.

Note 7. Partners’ Equity and Distributions

Distributions

ENP’s partnership agreement requires that, within 45 days after the end of each quarter, it distribute all of its available cash (as defined in ENP’s partnership agreement) to its unitholders. Distributions are not cumulative. ENP distributes available cash to its unitholders in accordance with their ownership percentages.

The following table provides information regarding ENP’s distributions of available cash for the periods indicated:

	Date Declared	Cash Distribution Declared per Common Unit			Date Paid	Total Distribution
	(In thousands)
2009
Quarter ended December 31	1/25/2010	$	0.5375		2/12/2010	$	24,642
Quarter ended September 30	10/26/2009	$	0.5375		11/13/2009		24,642
Quarter ended June 30	7/27/2009	$	0.5125		8/14/2009		23,481
Quarter ended March 31	4/27/2009	$	0.5000		5/15/2009		16,813
2008
Quarter ended December 31	1/26/2009	$	0.5000		2/13/2009		16,813
Quarter ended September 30	11/7/2008	$	0.6600		11/14/2008		22,191
Quarter ended June 30	8/11/2008	$	0.6881		8/14/2008		23,119
Quarter ended March 31	5/9/2008	$	0.5755		5/15/2008		19,316
2007
Quarter ended December 31	2/6/2008	$	0.3875		2/14/2008		9,843
Quarter ended September 30	11/8/2007	$	0.0530	(a)	11/14/2007		1,346

(a)	Based on an initial quarterly distribution of $0.35 per unit, prorated for the period from and including September 17, 2007 (the closing date of the IPO) through September 30, 2007.

Shelf Registration Statement on Form S-3

In November 2008, ENP’s “shelf” registration statement on Form S-3 was declared effective by the SEC. Under the shelf registration statement, ENP may offer common units, senior debt, or subordinated debt in one or more offerings with a total initial offering price of up to $1 billion.

Public Offerings of Common Units

In July 2009, ENP issued 9,430,000 common units under its shelf registration statement at a price to the public of $14.30 per common unit. ENP used the net proceeds of approximately $129.2 million, after deducting the underwriters’ discounts and commissions of $5.4 million, in the aggregate, and offering costs of approximately $0.2 million, to fund a portion of the purchase price of the Rockies and Permian Basin Assets.

In May 2009, ENP issued 2,760,000 common units under its shelf registration statement at a price to the public of $15.60 per common unit. ENP used the net proceeds of approximately $40.9 million, after deducting the underwriters’ discounts and commissions of $1.9 million, in the aggregate, and offering costs of approximately $0.2 million, to fund the purchase price of the Vinegarone Assets and a portion of the purchase price of the Williston Basin Assets.

Note 8. Earnings Per Unit

As discussed in “Note 2. Summary of Significant Accounting Policies,” ENP adopted ASC 260-10 on January 1, 2009 and all periods prior to adoption have been restated to calculate earnings per unit in accordance therewith. For 2008, basic earnings per unit and diluted earnings per unit were unaffected by the adoption of ASC 260-10. For 2007, basic earnings per unit and diluted earnings per unit each decreased $0.01 per common unit as a result of the adoption of ASC 260-10. For 2007, earnings per unit was calculated based on the net loss for the period from the closing of the IPO in September 2007 through December 31, 2007.

The following table reflects the allocation of net income (loss) to ENP’s limited partners and earnings per unit computations for the periods indicated:

	Year Ended December 31,
	2009			2008			2007
	(In thousands, except per unit amounts)
Net income (loss)	$	(40,329	)	$	220,756		$	21,706
Less: net income for pre-IPO and pre-partnership operations of assets acquired from affiliates		(176	)		(51,640	)		(40,682	)
Net income (loss) attributable to unitholders	$	(40,505	)	$	169,116		$	(18,976	)

Numerator:
Numerator for basic EPU:
Net income (loss) attributable to unitholders	$	(40,505	)	$	169,116		$	(18,976	)
Less: distributions earned by participating securities		(1,054	)		(4,498	)		(517	)
Plus: cash distributions in excess of (less than) income allocated to the general partner		1,646			(1,548	)		616
Net income (loss) allocated to limited partners		(39,913	)		163,070			(18,877	)
Plus: income allocated to dilutive participating securities		—			3,398			—
Numerator for diluted EPU	$	(39,913	)	$	166,468		$	(18,877	)

Denominator:
Denominator for basic EPU:
Weighted average common units outstanding		39,366			30,568			23,877
Effect of dilutive management incentive units(a)		—			1,367			—
Effect of dilutive phantom units(b)		—			3			—
Denominator for diluted EPU		39,366			31,938			23,877

Net income (loss) per common unit:
Basic	$	(1.01	)	$	5.33		$	(0.79	)
Diluted	$	(1.01	)	$	5.21		$	(0.79	)

(a)	For 2007, 550,000 management incentive units were outstanding but were excluded from the diluted earnings per unit calculations because their effect would have been antidilutive. Please read “Note 9. Unit-Based Compensation Plans” for additional discussion of the management incentive units.

(b)

Unvested phantom units have no contractual obligation to absorb losses of ENP. Therefore, for 2009 and 2007, 56,250 and 20,000 phantom units, respectively, were outstanding but were excluded from the diluted earnings per unit calculations because their effect would have been antidilutive. Please read “Note 9. Unit-Based Compensation Plans” for additional discussion of phantom units.

Note 9. Unit-Based Compensation Plans

Management Incentive Units

In May 2007, the board of directors of the General Partner issued 550,000 management incentive units to certain executive officers of the General Partner. During the fourth quarter of 2008, the management incentive units became convertible into ENP common units, at the option of the holder, at a ratio of one management incentive unit to approximately 3.1186 ENP common units, and all 550,000 management incentive units were converted into 1,715,205 ENP common units.

The fair value of the management incentive units was estimated on the date of grant using a discounted dividend model. During 2008 and 2007, ENP recognized non-cash unit-based compensation expense for the management incentive units of approximately $4.8 million and $6.8 million, respectively, which is included in “General and administrative expense” in the accompanying Consolidated Statements of Operations. There have been no additional issuances of management incentive units.

Long-Term Incentive Plan

In September 2007, the board of directors of the General Partner adopted the LTIP, which provides for the granting of options, restricted units, phantom units, unit appreciation rights, distribution equivalent rights, other unit-based awards, and unit awards. All employees, consultants, and directors of EAC, the General Partner, and any of their subsidiaries and affiliates who perform services for ENP are eligible to be granted awards under the LTIP. The LTIP is administered by the board of directors of the General Partner or a committee thereof, referred to as the plan administrator. To satisfy common unit awards under the LTIP, ENP may issue common units, acquire common units in the open market, or use common units owned by EAC.

The total number of common units reserved for issuance pursuant to the LTIP is 1,150,000. As of December 31, 2009, there were 1,075,000 common units available for issuance under the LTIP.

Phantom Units. Each October, ENP issues 5,000 phantom units to each member of the General Partner’s board of directors pursuant to the LTIP. A phantom unit entitles the grantee to receive a common unit upon the vesting of the phantom unit or, at the discretion of the plan administrator, cash equivalent to the value of a common unit. ENP intends to settle the phantom units at vesting by issuing common units to the grantee; therefore, these phantom units are classified as equity instruments. Phantom units vest equally over a four-year period. The holders of phantom units also receive distribution equivalent rights prior to vesting, which entitle them to receive cash equal to the amount of any cash distributions paid by ENP with respect to a common unit during the period the right is outstanding. During 2009, 2008, and 2007, ENP recognized non-cash unit-based compensation expense for the phantom units of approximately $0.4 million, $0.3 million, and $31,000, respectively, which is included in “General and administrative expense” in the accompanying Consolidated Statements of Operations.

The following table summarizes the changes in ENP’s unvested phantom units for 2009:

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding at January 1, 2009		43,750		$	18.67
Granted		25,000			18.13
Vested		(12,500	)		18.83
Forfeited		—			—
Outstanding at December 31, 2009		56,250			18.40

During 2009, 2008, and 2007, ENP issued 25,000, 30,000, and 20,000, respectively, phantom units to members of the General Partner’s board of directors, the vesting of which is dependent only on the passage of time and continuation as a board member. The following table provides information regarding ENP’s outstanding phantom units at December 31, 2009:

	Year of Vesting
Year of Grant	2010		2011		2012		2013		Total
2007		5,000		5,000		—		—		10,000
2008		7,500		7,500		6,250		—		21,250
2009		6,250		6,250		6,250		6,250		25,000
Total		18,750		18,750		12,500		6,250		56,250

As of December 31, 2009, ENP had $0.7 million of total unrecognized compensation cost related to unvested phantom units, which is expected to be recognized over a weighted average period of 2.2 years. During 2009 and 2008, there were 12,500 and 6,250, respectively, phantom units that vested, the total fair value of which was $0.2 million and $0.1 million, respectively.

Note 10. Fair Value Measurements

The following table sets forth ENP’s book value and estimated fair value of financial instruments as of the dates indicated:

	December 31,
	2009				2008
	Book Value		Book Value		Book Value		Book Value
	(In thousands)
Assets:
Cash and cash equivalents	$	1,754	$	1,754	$	619	$	619
Accounts receivable — trade		24,543		24,543		18,965		18,965
Accounts receivable — affiliate		8,213		8,213		3,896		3,896
Commodity derivative contracts		26,304		26,304		113,628		113,628
Liabilities:
Accounts payable — trade		577		577		1,036		1,036
Accounts payable — affiliate		2,780		2,780		5,468		5,468
Revolving credit facility		255,000		255,000		150,000		150,000
Commodity derivative contracts		19,547		19,547		229		229
Interest rate swaps		3,669		3,669		4,559		4,559

The book values of cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term nature of these instruments. The book value of the revolving credit facility approximates fair value as the interest rate is variable. ENP’s credit risk has not changed materially from the date the revolving credit facility was entered into. Commodity derivative contracts and interest rate swaps are marked-to-market each period and are thus stated at fair value in the accompanying Consolidated Balance Sheets.

Commodity Derivative Contracts

ENP manages commodity price risk with swap contracts, put contracts, collars, and floor spreads. Swap contracts provide a fixed price for a notional amount of sales volumes. Put contracts provide a fixed floor price on a notional amount of sales volumes while allowing full price participation if the relevant index price closes above the floor price. Collars provide a floor price for a notional amount of sales volumes while allowing some additional price participation if the relevant index price closes above the floor price.

From time to time, ENP enters into floor spreads. In a floor spread, ENP purchases puts at a specified price (a “purchased put”) and also sells a put at a lower price (a “short put”). This strategy enables ENP to achieve some downside protection for a portion of its production, while funding the cost of such protection by selling a put at a lower price. If the price of the commodity falls below the strike price of the purchased put, then ENP has protection against additional commodity price decreases for the covered production down to the strike price of the short put. At commodity prices below the strike price of the short put, the benefit from the purchased put is generally offset by the expense associated with the short put. For example, in 2007, ENP purcha sed oil put options for 2,000 Bbls/D in 2010 at $65 per Bbl. As NYMEX prices increased in 2008, ENP wanted to protect downside price exposure at the higher price. In order to do this, ENP purchased oil put options for 2,000 Bbls/D in 2010 at $75 per Bbl and simultaneously sold oil put options for 2,000 Bbls/D in 2010 at $65 per Bbl. Thus, after these transactions were completed, ENP had purchased two oil put options for 2,000 Bbls/D in 2010 (one at $65 per Bbl and one at $75 per Bbl) and sold one oil put option for 2,000 Bbls/D in 2010 at $65 per Bbl. However, the net effect resulted in ENP owning one oil put option for 2,000 Bbls/D at $75 per Bbl. In the following tables, the purchased floor component of these floor spreads are shown net and included with ENP’s other floor contracts.

The following tables summarize ENP’s open commodity derivative contracts as of December 31, 2009:

Oil Derivative Contracts

Period	Average Daily Floor Volume		Weighted Average Floor Price		Average Daily Cap Volume		Weighted Average Cap Price		Average Daily Swap Volume		Weighted Average Swap Price		Asset (Liability) Fair Market Volume
	(Bbls)		(per Bbl)		(Bbls)		(per Bbl)		(Bbls)		(per Bbl)		(in thousands)

2010													$	(1,476	)
		880	$	80.00		440	$	93.80		760	$	75.43
		2,000		75.00		1,000		77.23		250		65.95
		760		67.00		—		—		—		—
2011														2,638
		1,880		80.00		1,440		95.41		760		78.46
		1,000		70.00		—		—		—		—
		760		65.00		—		—		250		69.65
2012														(5,020	)
		750		70.00		500		82.05		210		81.62
		1,510		65.00		250		79.25		1,300		76.54
													$	(3,858	)

Natural Gas Derivative Contracts

Period	Average Daily Floor Volume		Weighted Average Floor Price		Average Daily Cap Volume		Weighted Average Cap Price		Average Daily Swap Volume		Weighted Average Swap Price		Asset Fair Market Volume
	(Mcf)		(per Mcf)		(Mcf)		(per Mcf)		(Mcf)		(per Mcf)		(in thousands)

2010													$	7,963
		3,800	$	8.20		3,800	$	9.58		5,452	$	6.20
		4,698		7.26		—		—		550		5.86
2011														2,105
		3,398		6.31		—		—		7,952		6.36
		—		—		—		—		550		5.86
2012														547
		898		6.76		—		—		5,452		6.26
		—		—		—		—		550		5.86
													$	10,615

Counterparty Risk. At December 31, 2009, ENP had committed 10 percent or greater (in terms of fair market value) of either its oil or natural gas derivative contracts in asset positions to the following counterparties:

Counterparty	Fair Market Value of Oil Derivative Contracts Committed		Fair Market Value of Natural Gas Derivative Contracts Committed
	(In thousands)
BNP Paribas	$	13,955	$	2,795
Calyon		3,820		6,167
Royal Bank of Canada		4,158	(a)
Wachovia		3,069		1,148

(a) Less than 10 percent.

In order to mitigate the credit risk of financial instruments, ENP enters into master netting agreements with certain counterparties. The master netting agreement is a standardized, bilateral contract between a given counterparty and ENP. Instead of treating each financial transaction between the counterparty and ENP separately, the master netting agreement enables the counterparty and ENP to aggregate all financial trades and treat them as a single agreement. This arrangement is intended to benefit ENP in three ways: (1) the netting of the value of all trades reduces the likelihood of counterparties requiring daily collateral posting by ENP; (2) default by a counterparty under one financial trade can trigger rights to terminate all financial trades with such counterparty; and (3) netting of se ttlement amounts reduces ENP’s credit exposure to a given counterparty in the event of close-out. ENP’s accounting policy is to not offset fair value amounts for derivative instruments.

Interest Rate Swaps

ENP uses derivative instruments in the form of interest rate swaps, which hedge risk related to interest rate fluctuation, whereby it converts the interest due on certain floating rate debt under its revolving credit facility to a weighted average fixed rate. The following table summarizes ENP’s open interest rate swaps as of December 31, 2009, all of which were entered into with Bank of America, N.A.:

Term	Notional Amount		Fixed Rate			Floating Rate
	(In thousands)
Jan. 2010 — Jan. 2011	$	50,000		3.1610	%	1-month LIBOR
Jan. 2010 — Jan. 2011		25,000		2.9650	%	1-month LIBOR
Jan. 2010 — Jan. 2011		25,000		2.9613	%	1-month LIBOR
Jan. 2010 — Mar. 2012		50,000		2.4200	%	1-month LIBOR

During 2009 and 2008, settlements of interest rate swaps increased ENP’s interest expense by approximately $3.8 million and $0.2 million, respectively.

Current Period Impact

ENP recognizes derivative fair value gains and losses related to: (1) ineffectiveness on derivative contracts designated as hedges; (2) changes in the fair market value of derivative contracts not designated as hedges; (3) settlements on derivative contracts not designated as hedges; and (4) premium amortization. The following table summarizes the components of “Derivative fair value loss (gain)” for the periods indicated:

	Year Ended December 31,
	2009			2008			2007
	(In thousands)
Ineffectiveness	$	2		$	372		$	—
Mark-to-market loss (gain)		94,438			(101,595	)		23,470
Premium amortization		23,245			8,936			4,073
Settlements		(70,221	)		(4,593	)		(1,242	)
Total derivative fair value loss (gain)	$	47,464		$	(96,880	)	$	26,301

Accumulated Other Comprehensive Loss

At December 31, 2009 and 2008, “Accumulated other comprehensive loss” on the accompanying Consolidated Balance Sheets consisted entirely of deferred losses, net of tax, on ENP’s interest rate swaps of $3.4 million and $4.3 million, respectively. During 2010, ENP expects to reclassify $3.4 million of deferred losses from accumulated other comprehensive loss to interest expense. The actual gains or losses ENP will realize from its interest rate swaps may vary significantly from the deferred losses recorded in “Accumulated other comprehensive loss” in the accompanying Consolidated Balance Sheet due to the fluctuation of interest rates.

Tabular Disclosures of Fair Value Measurements

The following table summarizes the fair value of ENP’s derivative contracts as of the dates indicated (in thousands):

	Asset Derivatives						Liability Derivatives
	December 31, 2009			December 31, 2008			December 31, 2009			December 31, 2008
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments under ASC 815
Commodity derivative contracts	Derivatives — current	$	12,881	Derivatives — current	$	75,131	Derivatives — current	$	6,393	Derivatives — current	$	—
Commodity derivative contracts	Derivatives — noncurrent		13,423	Derivatives — noncurrent		38,497	Derivatives — noncurrent		13,154	Derivatives — noncurrent		229

Total derivatives not designated as hedging instruments under ASC 815		$	26,304		$	113,628		$	19,547		$	229

Derivatives designated as hedging instruments under ASC 815
Interest rate swaps	Derivatives — current	$	—	Derivatives — current	$	—	Derivatives — current	$	3,421	Derivatives — current	$	1,297
Interest rate swaps	Derivatives — noncurrent		—	Derivatives — noncurrent		—	Derivatives — noncurrent		248	Derivatives — noncurrent		3,262

Total derivatives designated as hedging instruments under ASC 815		$	—		$	—		$	3,669		$	4,559

Total derivatives		$	26,304		$	113,628		$	23,216		$	4,788

The following table summarizes the effect of derivative instruments not designated as hedges under ASC 815 on the Consolidated Statements of Operations for the periods indicated (in thousands):

		Amount of Loss (Gain) Recognized in Income
		Year Ended December 31,
Derivatives Not Designated as Hedges Under ASC 815	Location of Loss (Gain) Recognized in Income	2009		2008			2007
Commodity derivative contracts	Derivative fair value loss (gain)	$	47,462	$	(97,252	)	$	26,301

The following tables summarize the effect of derivative instruments designated as hedges under ASC 815 on the Consolidated Statements of Operations for the periods indicated (in thousands):

	Amount of Loss Recognized in Accumulated OCI (Effective Portion)
	Year Ended December 31,
Derivatives Designated as Hedges Under ASC 815	2009		2008		2007
Interest rate swaps	$	2,946	$	4,505	$	—

	Amount of Loss Reclassified from Accumulated OCI into Income (Effective Portion)
	Year Ended December 31,
Location of Loss Reclassified from Accumulated OCI into Income (Effective Portion)	2009		2008		2007
Interest expense	$	3,785	$	246	$	—

	Amount of Loss Recognized in Income as Ineffective
	Year Ended December 31,
Location of Loss Recognized in Income as Ineffective	2009		2008		2007
Derivative fair value loss (gain)	$	2	$	372	$	—

Fair Value Hierarchy

ASC 820-10 established a fair value hierarchy that prioritizes the inputs used to measure fair value. The three levels of the fair value hierarchy defined by ASC 820-10 are as follows:

·	Level 1 — Unadjusted quoted prices are available in active markets for identical assets or liabilities.

·	Level 2 — Pricing inputs, other than quoted prices within Level 1, that are either directly or indirectly observable.

·	Level 3 — Pricing inputs that are unobservable requiring the use of valuation methodologies that result in management’s best estimate of fair value.

ENP’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of the financial assets and liabilities and their placement within the fair value hierarchy levels. The following methods and assumptions were used to estimate the fair values of ENP’s assets and liabilities that are accounted for at fair value on a recurring basis:

Level 2 — Fair values of oil and natural gas swaps were estimated using a combined income-based and market-based valuation methodology based upon forward commodity price curves obtained from independent pricing services reflecting broker market quotes. Fair values of interest rate swaps were estimated using a combined income-based and market-based valuation methodology based upon credit ratings and forward interest rate yield curves obtained from independent pricing services reflecting broker market quotes.

Level 3 — ENP’s oil and natural gas calls, puts, and short puts are average value options, which are not exchange-traded contracts. Settlement is determined by the average underlying price over a predetermined period of time. ENP uses both observable and unobservable inputs in a Black-Scholes valuation model to determine fair value. Accordingly, these derivative instruments are classified within the Level 3 valuation hierarchy. The observable inputs of ENP’s valuation model include: (1) current market and contractual prices for the underlying instruments; (2) quoted forward prices for oil and natural gas; and (3) interest rates, such as a LIBOR curve for a term similar to the commodity derivative contract. The unobservable input of ENP’s valuation model is volati lity. The implied volatilities for ENP’s calls, puts, and short puts with comparable strike prices are based on the settlement values from certain exchange-traded contracts. The implied volatilities for calls, puts, and short puts where there are no exchange-traded contracts with the same strike price are extrapolated from exchange-traded implied volatilities by an independent party.

ENP adjusts the valuations from the valuation model for nonperformance risk, using management’s estimate of the counterparty’s credit quality for asset positions and ENP’s credit quality for liability positions. ENP uses multiple sources of third-party credit data in determining counterparty nonperformance risk, including credit default swaps. ENP considers the impact of netting and offset provisions in the agreements on counterparty credit risk, including whether the position with the counterparty is a net asset or net liability. There were no changes in the valuation techniques used to measure the fair value of ENP’s oil and natural gas calls, puts, or short puts during 2009.

The following table sets forth ENP’s assets and liabilities that were accounted for at fair value on a recurring basis as of December 31, 2009:

	Fair Value Measurements at Reporting Date Using
	Asset (Liability) at December 31, 2009			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(In thousands)
Oil derivative contracts — swaps	$	(12,443	)	$	—	$	(12,443	)	$	—
Oil derivative contracts — floors and caps		8,585			—		—			8,585
Natural gas derivative contracts — swaps		2,087			—		2,087			—
Natural gas derivative contracts — floors and caps		8,528			—		—			8,528
Interest rate swaps		(3,669	)		—		(3,669	)		—
Total	$	3,088		$	—	$	(14,025	)	$	17,113

The following table summarizes the changes in the fair value of ENP’s Level 3 assets and liabilities for 2009:

	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
	Oil Derivative Contracts – Floors and Caps			Natural Gas Derivative Contracts – Floors and Caps			Total
	(In thousands)
Balance at January 1, 2009	$	95,430		$	12,741		$	108,171
Total gains (losses):
Included in earnings		(32,249	)		8,940			(23,309	)
Settlements		(54,596	)		(13,153	)		(67,749	)
Balance at December 31, 2009	$	8,585		$	8,528		$	17,113
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date	$	(32,249	)	$	8,940		$	(23,309	)

Since ENP does not use hedge accounting for its commodity derivative contracts, all gains and losses on its Level 3 assets and liabilities are included in “Derivative fair value loss (gain)” in the accompanying Consolidated Statements of Operations.

All fair values have been adjusted for nonperformance risk resulting in a reduction of the net commodity derivative asset of approximately $0.1 million as of December 31, 2009. For commodity derivative contracts which are in an asset position, ENP uses the counterparty’s credit default swap rating. For commodity derivative contracts which are in a liability position, ENP uses the average credit default swap rating of its peer companies as ENP does not have its own credit default swap rating.

ENP’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of the nonfinancial assets and liabilities and their placement within the fair value hierarchy levels. The following methods and assumptions were used to estimate the fair values of ENP’s assets and liabilities that are accounted for at fair value on a nonrecurring basis:

Level 3 — Fair values of asset retirement obligations are determined using discounted cash flow methodologies based on inputs, such as plugging costs and reserve lives, which are not readily available in public markets. Please read “Note 5. Asset Retirement Obligations” for additional discussion of ENP’s asset retirement obligations.

The following table sets forth ENP’s assets and liabilities that were accounted for at fair value on a nonrecurring basis as of December 31, 2009:

			Fair Value Measurements Using
Description	Liability at December 31, 2009		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Gains (Losses)
	(In thousands)
Asset
Retirement obligations	$	89	$	—	$	—	$	89	$	—

Note 11. Related Party Transactions

Administrative Services Agreement

ENP does not have any employees. The employees supporting ENP’s operations are employees of EAC. As discussed in “Note 1. Formation of the Partnership and Description of Business,” ENP entered into the Administrative Services Agreement pursuant to which Encore Operating performs administrative services for ENP, such as accounting, corporate development, finance, land, legal, and engineering. In addition, Encore Operating provides all personnel, facilities, goods, and equipment necessary to perform these services which are not otherwise provided for by ENP. Encore Operating is not liable to ENP for its performance of, or failure to perform, services under the Administrative Services Agreement unless its acts or omissions constitute gross negligence or willful misconduct.

Encore Operating initially received an administrative fee of $1.75 per BOE of ENP’s production for such services. From April 1, 2008 to March 31, 2009, the administration fee was $1.88 per BOE of ENP’s production. Effective April 1, 2009, the administrative fee increased to $2.02 per BOE of ENP’s production. ENP also reimburses Encore Operating for actual third-party expenses incurred on ENP’s behalf. Encore Operating has substantial discretion in determining which third-party expenses to incur on ENP’s behalf. In addition, Encore Operating is entitled to retain any COPAS overhead charges associated with drilling and operating wells that would otherwise be paid by non-operating interest owners to the operator.

The administrative fee will increase in the following circumstances:

·	beginning on the first day of April in each year by an amount equal to the product of the then-current administrative fee multiplied by the COPAS Wage Index Adjustment for that year;

if ENP acquires additional assets, Encore Operating may propose an increase in its administrative fee that covers the provision of services for such additional assets; however, such proposal must be approved by the board of directors of the General Partner upon the recommendation of its conflicts committee; and

·	otherwise as agreed upon by Encore Operating and the General Partner, with the approval of the conflicts committee of the board of directors of the General Partner.

ENP reimburses EAC for any state income, franchise, or similar tax incurred by EAC resulting from the inclusion of ENP in consolidated tax returns with EAC as required by applicable law. The amount of any such reimbursement is limited to the tax that ENP would have incurred had it not been included in a combined group with EAC.

Administrative fees (including COPAS recovery) paid to Encore Operating pursuant to the Administrative Services Agreement are included in “General and administrative expenses” in the accompanying Consolidated Statement of Operations. The reimbursements of actual third-party expenses incurred by Encore Operating on ENP’s behalf are included in “Lease operating expense” in the accompanying Consolidated Statement of Operations. The following table shows amounts paid by ENP to Encore Operating pursuant to the Administrative Services Agreement for the periods indicated:

	Year Ended December 31,
	2009		2008		2007
	(In thousands)
Administrative fees (including COPAS recovery)	$	5,693	$	6,600	$	2,848
Third-party expenses		5,352		8,269		3,502

As of December 31, 2009 and 2008, ENP had a payable to EAC of $2.8 million and $5.5 million, respectively, which is reflected as “Accounts payable — affiliate” in the accompanying Consolidated Balance Sheets and a receivable from EAC of $8.2 million and $3.9 million, respectively, which is reflected as “Accounts receivable — affiliate” in the accompanying Consolidated Balance Sheets.

Acquisitions from EAC

As previously discussed, ENP acquired (1) the Permian and Williston Basin Assets from Encore Operating in February 2008 for approximately $125.0 million in cash and the issuance of 6,884,776 ENP common units to Encore Operating, (2) the Arkoma Basin Assets from Encore Operating in January 2009 for approximately $46.4 million in cash, (3) the Williston Basin Assets from Encore Operating in June 2009 for approximately $25.2 million in cash, and (4) the Rockies and Permian Basin Assets from Encore Operating in August 2009 for approximately $179.6 million in cash. Prior to acquisition by ENP, these properties were owned by EAC and were not separate legal entities.

In addition to payroll-related expenses, EAC incurred general and administrative expenses related to leasing office space and other corporate overhead expenses during the period these properties were owned by EAC. A portion of EAC’s consolidated general and administrative expenses were allocated to ENP and included in the accompanying Consolidated Statements of Operations based on the respective percentage of BOE produced by the properties in relation to the total BOE produced by EAC on a consolidated basis. A portion of EAC’s consolidated indirect lease operating overhead expenses were allocated to ENP included in the accompanying Consolidated Statements of Operations based on its share of EAC’s direct lease operating expense.

Distributions

During 2009, 2008, and 2007, ENP paid cash distributions of approximately $43.9 million, $46.9 million, and $0.8 million, respectively, to EAC and its subsidiaries, including the General Partner. During 2008 and 2007, ENP paid cash distributions of approximately $3.5 million and $27,000, respectively, to certain executive officers of the General Partner based on their ownership of management incentive units.

Other

As discussed in “Note 6. Long-Term Debt,” during 2007, ENP had a subordinated credit agreement with EAP Operating, which was repaid in full with a portion of the net proceeds from the IPO.

EAC contributed $93.7 million in cash to ENP in March 2007. These proceeds were used by ENP, along with proceeds from the borrowings under ENP’s long-term debt agreements, to purchase the Elk Basin Assets. Additionally, EAC made a non-cash contribution in March 2007 of derivative oil put contracts representing 2,500 Bbls/D of production at $65.00 per Bbl for the period of April 2007 through December 2008. At the date of transfer, the derivative contracts had a fair value of $9.4 million.

Note 12. Subsequent Events

Subsequent events were evaluated through February 24, 2010, which is the date the financial statements were issued.

On January 25, 2010, ENP announced that the board of directors of the General Partner declared an ENP cash distribution for the fourth quarter of 2009 to unitholders of record as of the close of business on February 8, 2010 at a rate of $0.5375 per unit. Approximately $24.6 million was paid to unitholders on February 12, 2010.

ENCORE ENERGY PARTNERS LP

SUPPLEMENTARY INFORMATION

Capitalized Costs and Costs Incurred Relating to Oil and Natural Gas Producing Activities

The capitalized cost of oil and natural gas properties was as follows as of the dates indicated:

	December 31,
	2009			2008
	(In thousands)
Properties and equipment, at cost — successful efforts method:
Proved properties, including wells and related equipment	$	851,833		$	814,903
Unproved properties		55			84
Accumulated depletion, depreciation, and amortization		(210,417	)		(154,584	)
	$	641,471		$	660,403

The following table summarizes costs incurred related to oil and natural gas properties for the periods indicated:

	Year Ended December 31,
	2009		2008		2007
	(In thousands)
Acquisitions:
Proved properties(a)	$	32,265	$	5,940	$	498,057
Unproved properties		1		—		105
Total acquisitions		32,266		5,940		498,162
Development:
Drilling and exploitation(b)		7,197		31,450		21,277
Total development		7,197		31,450		21,277
Exploration:
Drilling and exploitation		1,088		8,104		9,899
Other		135		119		101
Total exploration		1,223		8,223		10,000
Total costs incurred	$	40,686	$	45,613	$	529,439

(a)	Includes asset retirement obligations incurred for acquisition activities of $66 thousand and $6.5 million in 2009 and 2007, respectively.

(b)	Includes asset retirement obligations incurred for development activities of $23 thousand, $29 thousand, and $0.1 million during 2009, 2008, and 2007, respectively.

Oil & Natural Gas Producing Activities — Unaudited

The estimates of ENP’s proved oil and natural gas reserves, which are located entirely within the United States, were prepared in accordance with guidelines established by the SEC. Proved oil and natural gas reserve quantities are derived from estimates prepared by Miller and Lents, Ltd., who are independent petroleum engineers.

Future prices received for production and future production costs may vary, perhaps significantly, from the prices and costs assumed for purposes of these estimates. There can be no assurance that the proved reserves will be developed within the periods assumed or that prices and costs will remain constant. Actual production may not equal the estimated amounts used in the preparation of reserve projections. In accordance with SEC guidelines, 2009 estimates of future net cash flows from ENP’s properties and the representative value thereof are made using an unweighted average of the closing oil and natural gas prices for the applicable commodity on the first day of each month in 2009 and are held constant throughout the life of the properties. In accordance with past SEC guidelines, 2008 a nd 2007 estimates of future net cash flows from ENP’s properties and the representative value thereof are made using oil and natural gas prices in effect as of the dates of such estimates and are held constant throughout the life of the properties. Prices used in estimating ENP’s future net cash flows were as follows:

	2009		2008		2007
Oil (per Bbl)	$	61.18	$	44.60	$	96.01
Natural gas (per Mcf)	$	3.83	$	5.62	$	7.47

Net future cash inflows have not been adjusted for commodity derivative contracts outstanding at the end of the year. Future cash inflows are reduced by estimated production and development costs, which are based on year-end economic conditions and held constant throughout the life of the properties, by estimated abandonment costs, net of salvage, and by the estimated effect of future income taxes due to the Texas margin tax. Future federal income taxes have not been deducted from future net revenues in the calculation of ENP’s standardized measure as each partner is separately taxed on his share of ENP’s taxable income.

There are numerous uncertainties inherent in estimating quantities of proved reserves and in projecting future rates of production and timing of development expenditures. Oil and natural gas reserve engineering is and must be recognized as a subjective process of estimating underground accumulations of oil and natural gas that cannot be measured in any exact way, and estimates of other engineers might differ materially from those included herein. The accuracy of any reserve estimate is a function of the quality of available data and engineering, and estimates may justify revisions based on the results of drilling, testing, and production activities. Accordingly, reserve estimates are often materially different from the quantities of oil and natural gas that are ultimately recovered. Reserve est imates are integral to management’s analysis of impairments of oil and natural gas properties and the calculation of DD&A on these properties.

ENP’s estimated net quantities of proved oil and natural gas reserves were as follows as of the dates indicated:

	December 31,
	2009		2008		2007
Proved developed reserves:
Oil (MBbls)		26,341		24,769		30,851
Natural gas (MMcf)		78,379		70,462		72,955
Combined (MBOE)		39,404		36,513		43,010
Proved undeveloped reserves:
Oil (MBbls)		2,589		2,509		4,377
Natural gas (MMcf)		6,320		7,549		10,283
Combined (MBOE)		3,643		3,767		6,091
Proved reserves:
Oil (MBbls)		28,930		27,278		35,228
Natural gas (MMcf)		84,699		78,011		83,238
Combined (MBOE)		43,047		40,280		49,101

The changes in ENP’s proved reserves were as follows for the periods indicated:

	Oil (MBbls)			Natural Gas (MMcf)			Oil Equivalent (MBOE)
Balance, December 31, 2006(a)		9,073			76,824			21,877
Purchases of minerals-in-place		25,965			6,221			27,002
Extensions and discoveries		488			7,414			1,724
Revisions of previous estimates		1,934			(1,470	)		1,688
Production		(2,232	)		(5,751	)		(3,190	)
Balance, December 31, 2007(a)		35,228			83,238			49,101
Purchases of minerals-in-place		32			2,489			447
Extensions and discoveries		148			2,832			620
Revisions of previous estimates		(5,596	)		(4,329	)		(6,318	)
Production		(2,534	)		(6,219	)		(3,570	)
Balance, December 31, 2008(a)		27,278			78,011			40,280
Purchases of minerals-in-place		—			18,837			3,140
Extensions and discoveries		2			1,112			187
Revisions of previous estimates		3,987			(7,164	)		2,793
Production		(2,337	)		(6,097	)		(3,353	)
Balance, December 31, 2009		28,930			84,699			43,047

(a)

Includes 1,585 MBOE, 1,510 MBOE, and 1,952 MBOE of proved reserves as of December 31, 2008, 2007, and 2006, respectively, associated with the Arkoma Basin Assets ENP acquired from Encore Operating in January 2009. Also includes 1,899 MBOE, 2,330 MBOE, and 444 MBOE of proved reserves as of December 31, 2008, 2007, and 2006, respectively, associated with the Williston Basin Assets ENP acquired from Encore Operating in June 2009. Also includes 10,732 MBOE, 13,663 MBOE, and 6,321 MBOE of proved reserves as of December 31, 2008, 2007, and 2006, respectively, associated with the Rockies and Permian Basin Assets ENP acquired from Encore Operating in August 2009. The acquisitions of these assets were accounted for as transactions between entities under common control, similar to a pooling of interests, whereby ENP’s historical financial information and proved reserve volumes were reca st to include the acquired properties for all periods the properties were owned by Encore Operating.

Recent SEC Rule-Making Activity. In December 2008, the SEC announced that it had approved revisions designed to modernize the oil and gas company reserves reporting requirements. Application of the new reserve rules resulted in the use of lower prices at December 31, 2009 for both oil and natural gas than would have resulted under the previous rules. Use of new 12-month average pricing rules at December 31, 2009 resulted in a decrease in proved reserves of approximately 2.2 MMBOE. Pursuant to the SEC’s final rule, prior period reserves were not restated.

ENP’s standardized measure of discounted estimated future net cash flows was as follows as of the dates indicated:

	December 31,
	2009			2008			2007
	(In thousands)
Future cash inflows	$	1,879,504		$	1,406,100		$	3,392,199
Future production costs		(819,352	)		(706,589	)		(1,157,893	)
Future development costs	��	(46,852	)		(50,540	)		(61,961	)
Future abandonment costs, net of salvage		(29,339	)		(28,771	)		(27,750	)
Future income tax expense		(1,217	)		(182	)		(7,344	)
Future net cash flows		982,744			620,018			2,137,251
10% annual discount		(488,243	)		(293,396	)		(1,073,527	)
Standardized measure of discounted estimated future net cash flows	$	494,501		$	326,622		$	1,063,724

The changes in ENP’s standardized measure of discounted estimated future net cash flows were as follows for the periods indicated:

	Year Ended December 31,
	2009			2008			2007
	(In thousands)
Net change in prices and production costs	$	153,083		$	(660,592	)	$	145,074
Purchases of minerals-in-place		19,136			5,856			719,376
Extensions, discoveries, and improved recovery		1,588			5,938			28,692
Revisions of previous quantity estimates		65,300			(60,036	)		46,995
Production, net of production costs		(95,270	)		(76,970	)		(161,737	)
Previously estimated development costs incurred during the period		4,732			13,685			17,542
Accretion of discount		32,662			106,373			25,527
Change in estimated future development costs		(3,527	)		(6,372	)		(39,806	)
Net change in income taxes		(457	)		3,345			(2,427
Change in timing and other		(9,368	)		(68,329	)		29,225
Net change in standardized measure		167,879			(737,102	)		808,461
Standardized measure, beginning of year		326,622			1,063,724			255,263
Standardized measure, end of year	$	494,501		$	326,622		$	1,063,724

Selected Quarterly Financial Data — Unaudited

The following table provides selected quarterly financial data for the periods indicated:

	Quarter
	First			Second			Third		Fourth
	(In thousands, except per unit data)
2009
Revenues, as reported	$	18,651		$	27,246		$	41,032	$	46,560
Plus: revenues from assets acquired from affiliate		7,648			9,380			—		—
Revenues, as recast	$	26,299		$	36,626		$	41,032	$	46,560
Operating income (loss), as reported	$	6,780		$	(35,043	)	$	10,383	$	(10,059	)
Plus: operating income (loss) from assets acquired from affiliate		(2,492	)		1,044			—		—
Operating income (loss), as recast	$	4,288		$	(33,999	)	$	10,383	$	(10,059	)
Net income (loss), as reported	$	4,568		$	(37,593	)	$	7,460	$	(13,316	)
Plus: net income (loss) from assets acquired from affiliate		(2,492	)		1,044			—		—
Net income (loss), as recast	$	2,076		$	(36,549	)	$	7,460	$	(13,316	)
Net income (loss) allocation:
Limited partners’ interest in net income (loss)	$	4,499		$	(37,093	)	$	5,904	$	(13,169	)
General partner’s interest in net income (loss)	$	69		$	(630	)	$	63	$	(147	)
Net income (loss) per common unit:
Basic	$	0.14		$	(1.08	)	$	0.13	$	(0.29	)
Diluted	$	0.14		$	(1.08	)	$	0.13	$	(0.29	)
2008
Revenues, as reported	$	49,245		$	67,160		$	84,110	$	26,383
Plus: revenues from assets acquired from affiliate		23,377			24,312			—		11,294
Revenues, as recast	$	72,622		$	91,472		$	84,110	$	37,677
Operating income (loss), as reported	$	7,291		$	(38,817	)	$	113,981	$	120,278
Plus: operating income from assets acquired from affiliate		11,464			13,810			—		381
Operating income (loss)	$	18,755		$	(25,007	)	$	113,981	$	120,659
Operating income (loss), as reported	$	5,585		$	(40,526	)	$	111,892	$	118,150
Plus: operating income from assets acquired from affiliate		11,550			13,810			—		295
Net income (loss)	$	17,135		$	(26,716	)	$	111,892	$	118,445
Net income (loss) allocation:
Limited partners’ interest in net income (loss)	$	(247	)	$	(45,441	)	$	89,716	$	115,332
General partner’s interest in net income (loss)	$	(36	)	$	(735	)	$	1,444	$	1,843
Net income (loss) per common unit:
Basic	$	(0.01	)	$	(1.45	)	$	2.86	$	3.68
Diluted	$	(0.01	)	$	(1.45	)	$	2.86	$	3.49

In June 2009, ENP acquired the Williston Basin Assets from Encore Operating. In August 2009, ENP acquired the Rockies and Permian Basin Assets from Encore Operating. Because these assets were acquired from an affiliate, the acquisitions were accounted for as transactions between entities under common control, similar to a pooling of interests, whereby the assets and liabilities of the acquired properties were recorded at Encore Operating’s carrying value and ENP’s historical financial information was recast to include the acquired properties for all periods in which the properties were owned by Encore Operating. Accordingly, the above selected quarterly financial data reflects the historical results of ENP combined with those of the Williston Basin Assets and the Rockies and Permian Basin Asse ts.

As discussed in “Note 2. Summary of Significant Accounting Policies” and “Note 8. Earnings Per Unit,” ENP adopted ASC 260-10 on January 1, 2009 and all periods have been restated to calculate earnings per unit in accordance therewith.

Grizzly Energy (GRZZP) Inactive 8-KIndex to Consolidated Financial Statements