Common use of Certain Additional Defined Terms Clause in Contracts

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b) Assignment Section 9.1(f) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 8.1(a) Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) Defensible Title Section 8.2(c) Deposit Section 2.4(a) Dominion Heritage Leases Section 4.10 Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) Notice Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d) Post-Closing Defect Section 8.5(b) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e) Rules Section 8.4 Sellers’ Losses Section 11.3 Execution Version

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.113.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b8.1(c)(i) Assignment Section 9.1(f) Basic Documents Section 4.7 Buyer’s 's Environmental Consultant Section 8.2(a) Buyer's Environmental Review Section 8.2(a) Buyer's Losses Section 11.2 Buyer’s 's Title Review Section 8.1(a) Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.4(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) 8.3 Defensible Title Section 8.2(c8.1(d)(i) Deposit Section 2.4(a) Dominion Heritage Leases Environmental Defect Section 4.10 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Environmental Defect Value Section 8.2(e)(ii) Environmental Information Section 8.2(b) Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) 8.3 Notice Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d8.1(d)(ii) Post-Closing Defect Section 8.5(b8.4(c) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e1.1(f) Remedies for Title Defects Section 8.1(b) Request Date Section 2.3(c) Required Payee Section 7.13 Restricted Period Section 12.9 Restricted Person Section 12.9 Rules Section 8.4 Sellers’ 8.3 Scheduled Production Sales Contracts Section 4.9 Seller's Losses Section 11.3 Execution VersionSuspended Proceeds Section 7.10 Survival Date Section 11.2 Title Defect Section 8.1(d)(iii) Title Defect Amount Section 8.1(c) Title Defect Notice Section 8.1(b) Title Defect Property Section 8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.113.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b8.1(c)(i) Assignment Section 9.1(f) Basic Documents Section 4.7 Buyer Hedge Period Section 7.14(b) Buyer’s 's Environmental Consultant Section 8.2(a) Buyer's Environmental Review Section 8.2(a) Buyer's Losses Section 11.2 Buyer’s 's Title Review Section 8.1(a) Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.4(c) Defect Dispute Section 8.4 8.3 Defects Escrow Section 8.5(b8.4(c) Defects Escrow Agent Section 8.5(b8.4(c) Defects Escrow Agreement Section 8.5(b8.4(c) Defensible Title Section 8.2(c8.1(d)(i) Deposit Section 2.4(a2.4(c) Dominion Heritage Leases Environmental Defect Section 4.10 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Environmental Defect Value Section 8.2(e)(ii) Environmental Information Section 8.2(b) Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Indemnification Support Deposit Section 1.2(b11.9(a) Extended Examination Period Indemnification Support Term Section 8.1(c) Holdback Amount Section 8.6(d11.9(b) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) 8.3 Notice Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d8.1(d)(ii) Post-Closing Defect Section 8.5(b8.4(c) Properties Section 1.1 Purchase Price Section 2.1 Records Remedies for Title Defects Section 1.1(e8.1(b) Request Date Section 2.3(c) Required Payee Section 12.11 -39- Defined Term Reference Rules Section 8.4 Sellers’ 8.3 Scheduled Production Sales Contracts Section 4.9 Seller's Losses Section 11.3 Execution VersionSuspended Proceeds Section 7.11 Survival Date Section 11.2 Title Defect Section 8.1(d)(iii) Title Defect Amount Section 8.1(c) Title Defect Notice Section 8.1(b) Title Defect Property Section 8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.118.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: 52 Term Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 2.2 Adjustment Amount Section 3.5 AFE Section 4.13 Agreement Preamble Allocated Value Section 8.2(b3.1(c)(i) Assignment Assets Section 9.1(f1.1 Assumed Obligations Section 11.4(a) Buyer’s Losses Business Days Section 11.2 Buyer’s Title Review 2.3(a) Business Employees Section 8.1(a11.12(a) Claim Notice Section 11.4(e)(i) Closing Article III Section 10.1 Closing Date Article III Section 10.1 Code Section 4.5 Continuing Employee Section 11.12(c) Cure Period Section 8.5(b3.6(b) Depth Severance Section 8.6(a) Depth Severance Deductible Amount Section 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 3.4 Defects Escrow Section 8.5(b3.6(a) Defects Escrow Agent Section 8.5(b3.6(a) Defects Escrow Agreement Section 8.5(b3.6(a) Defects Escrow Amount Section 3.6(a) Defensible Title Section 8.2(c3.1(d)(i) Deferred Adjustment Claim Section 3.5 Deferred Matters Date Section 3.5 Deposit Section 2.1(c) Deposit Escrow Agreement Section 2.4(a2.1(e) Dominion Heritage Leases Disputes Section 4.10 17.1(a) Documents Section 14.1 Effective Time Section 1.1 Entech Section 1.2 Environmental Claims Section 16.2 Environmental Defect Section 3.2(e)(i) Environmental Defect Notice Section 3.2(c) Environmental Defect Value Section 3.2(e)(ii) Environmental Information Section 3.2(b) Escrow Agent Section 2.1(c) Examination Period Section 8.1(a3.1(a) Estimated Adjusted Purchase Price Section 2.3(a) Excluded Assets Section 1.2 Existing Deep Xxxxx 1.1 Filings Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) 17.24 Indemnified Party Section 11.5 11.4(e)(i) Indemnifying Party Section 11.5 11.4(e)(i) Independent Expert Section 8.4 Lands Section 1.1(b17.1(a) Material Title Benefit Section 8.3(b) Notice Interim Period Section 11.5 Oil 6.1 Leasehold Interests Section 1.1(a) Leases Section 4.17 Losses Section 7.4 Material Contracts Section 4.7 MMS Section 5.7 Noble Heading Noble Indemnified Parties Section 7.4 Noble Internal XXXXx Section 11.4(f) Orders and Gas Properties Contracts Section 1.1 1.1(b)(iii) Overheld Amount Section 3.5 Party and Parties Preamble Permitted Encumbrances Section 8.2(d3.1(d)(ii) Platforms Section 1.1(b)(i) Post-Closing Defect Section 8.5(b3.6(a) Properties Pref Right Notice Section 1.1 3.9(a) Property Taxes Section 13.1 Purchase Price Section 2.1 2.1(a) Purchaser Heading Purchaser Indemnified Parties Section 11.4(c) Purchaser Party Section 17.24 Purchaser’s Environmental Consultant Section 3.2(a) Purchaser’s Environmental Review Section 3.2(a) Purchaser’s Estimate Section 3.5 Purchaser’s Title Review Section 3.1(a) Records Section 1.1(e1.1(c) Resolved Amount Section 3.5 Rules Section 8.4 Sellers’ Losses 17.1(b)(i) Title Defect Section 11.3 Execution Version3.1(d)(iii) Title Defect Amount Section 3.1(c) Title Defect Asset Section 3.1(b) Title Defect Notice Section 3.1(b) Third Party Section 11.4(a)(i) Third Party Claim Section 11.4(e)(i) Xxxxx Section 1.1(b)(i) EXECUTED on May 15, 2006, to be effective for all purposes, however, as of the Effective Date. NOBLE ENERGY, INC. By: Name: Xxxxx X. Xxxxxx Title: Senior Vice President XXXXXXX RESOURCES LP By Xxxxxxx Resources GP LLC, Its General Partner By: Name: Title:

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b8.1(c)(i) Assignment Section 9.1(f) Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 8.1(a) Casualty Deficit Section 7.6(c) Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.5(c) Defect Dispute Section 8.4 8.3(b) Defects Escrow Section 8.5(b8.4(a) Defects Escrow Agent Section 8.5(b8.4(a) Defects Escrow Agreement Section 8.5(b8.4(a) Defensible Title Section 8.2(c8.1(d)(i) Deposit Section 2.4(a) Dominion Heritage Leases Environmental Defect Section 4.10 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Environmental Defect Value Section 8.2(e)(ii) Environmental Information Section 8.2(b) Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) Notice Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d8.1(d)(ii) Post-Closing Defect Section 8.5(b8.5(c) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e1.1(f) Remedies for Title Defects Section 8.1(b) Request Date Section 2.3(c) Rules Section 8.4 8.3(b) Scheduled Production Sales Contracts Section 4.9 Sellers’ Losses Section 11.3 Execution VersionSubstantial Environmental Concern Section 8.2(e)(iii) Suspended Proceeds Section 7.11 Survival Date Section 11.2 Title Defect Section 8.1(d)(iii) Title Defect Amount Section 8.1(c) Defined Term Reference Title Defect Property Section 8.1(b)

Certain Additional Defined Terms. In addition to such the terms as are defined in the preamble to this Agreement and in Section 14.1above, the following capitalized terms are used in this Agreement as defined in the Articles or Sections of this Agreement set forth opposite such terms: Defined Term Terms Section Reference Accounting Dispute Action Section 2.3(c) Accounting Referee 6.4 Agreement Introduction Audited Financial Statements Section 2.3(c) Adjusted Purchase Price 3.6 Class A Common Stock Recital A Class B Common Stock Recital A Closing Section 2.1 Allocated Value Section 8.2(b) Assignment Section 9.1(f) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 8.1(a2.3(a) Closing Article III Certificate Section 2.2(a) Closing Date Article III Cure Period Section 8.5(b2.3(a) Depth Severance Common Stock Recital A Commonly Controlled Entity Section 8.6(a3.13(a) Depth Severance Amount Company Introduction Company Employees Section 8.6(b6.5(a) Depth Severance Notice Company Intellectual Property Section 8.6(c3.10(e) Defect Dispute Competitive Activities Section 8.4 Defects Escrow 6.3(a)(i) Declaration of Trust Section 8.5(b4.1 Employees Section 3.14 Environmental Permits Section 3.9(b) Defects Escrow Agent Environmental Records Section 8.5(b3.9(j) Defects Escrow Agreement Financial Statements Section 8.5(b) Defensible Title Section 8.2(c) Deposit Section 2.4(a) Dominion Heritage Leases Section 4.10 Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) 3.6 Holdback Amount Section 8.6(d2.4(e) Indemnified Party Section 11.5 7.4(a) Indemnifying Party Section 11.5 Independent Expert 7.4(a) Latest Balance Sheet Section 8.4 Lands 3.6 Lien Section 1.1(b3.4 Losses Section 7.2(a) Material Title Benefit Contracts Section 8.3(b3.12(a) Notice Multiemployer Plan Section 3.13(b) Multiple Employer Plan Section 3.13(b) Net Recovery Amount Section 6.6 Parent Introduction Permits Section 3.8 Permitted Goods and Services Section 6.3(a)(i) Personal Property Section 3.11(b) Plans Section 3.13(a) Pre-Closing Tax Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d6.2(c) Post-Closing Defect Section 8.5(b) Properties Section 1.1 Purchase Price Section 2.1 Records 2.2(a) Purchaser Introduction Purchaser Indemnitees Section 1.1(e7.3 Real Property Section 3.11(a) Rules Recovery Costs Section 8.4 Sellers6.6 Remedial Actions Section 3.9(e) Required Shareholders Section 2.4(b) Related Persons Section 3.20 Schedule of Exceptions Introduction to Article III Shareholder List Section 3.2(a) Shareholders Introduction Shareholders’ Losses Representative Introduction Shares Recital A Unaudited Financial Statements Section 11.3 Execution Version3.6 Third-Party Claim Section 7.4(a) Top Ten Customer Section 3.22(a) Transmitted Copies Section 8.11 Voting Company Debt Section 3.2

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b8.1(c)(i) Assignment Section 9.1(f) Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 8.1(a) LP Closing Article III LP Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.4(c) Defect Dispute Section 8.4 8.3 Defects Escrow Section 8.5(b8.4(c) Defects Escrow Agent Section 8.5(b8.4(c) Defects Escrow Agreement Section 8.5(b8.4(c) Defensible Title Section 8.1(d)(i) Environmental Defect Section 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Deposit Environmental Defect Value Section 2.4(a8.2(e)(ii) Dominion Heritage Leases Environmental Information Section 4.10 8.2(b) Examination Period Section 8.1(a) LP Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) 8.3 Notice Period Section 11.5 LP Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d8.1(d)(ii) Post-LP Closing Defect Section 8.5(b8.4(c) LP Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e1.1(f) Request Date Section 2.3(c) Rules Section 8.4 8.3 LP Sellers’ Losses Section 11.3 Execution VersionSuspended Proceeds Section 7.11 Survival Date Section 11.2(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and recitals to this Agreement and in Section 14.11.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Additional Listing Application Section 7.14 Adjusted Cash Purchase Price Section 2.3(b) Adjusted Parent Shares Section 2.3(c) Accounting Referee Arbitration Decision Section 2.3(c16.3(d) Adjusted Arbitration Notice Section 16.3(a) Arbitrator Section 16.3(a) Assignment Section 10.2(a) Audited Financial Statements Section 4.10 Bank Section 2.4(a) Base Purchase Price Section 2.1 Allocated Value 2.2 Buyer Preamble Buyer Indemnitees Section 8.2(b) Assignment Section 9.1(f) 13.2 Defined Term Reference Buyer Parties Preamble Buyer’s Losses Indemnified Claims Section 11.2 13.1 Buyer’s Title Review Section 8.1(a) 8.1 Cash Purchase Price Section 2.2 Closing Article III Section 10.1 Closing Date Article III Cure Period Section 8.5(b) Depth Severance 10.1 Common Interest Parties Section 8.6(a) Depth Severance Amount 17.15 Company Preamble Consents Section 8.6(b) Depth Severance 4.22 Damages Section 7.2 Defect Notice Section 8.6(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) 8.2 Defensible Title Section 8.2(c) 8.4 Deposit Section 2.4(a) Dominion Heritage Leases Deposit Account Section 4.10 2.4(a) Disputes Section 16.1 Environmental Defect Section 8.7(a) Environmental Defect Amount Section 8.7(a) Environmental Defect Threshold Section 8.7(a) Examination Period Section 8.1(a8.1 Execution Date Preamble Final Settlement Statement Section 12.3 Finance Related Parties Section 7.19 Financial Statements Section 4.10 HSR Act Section 7.12 Indemnity Deductible Section 13.4(a) Excluded Assets Indemnity Escrow Account Section 1.2 Existing Deep Xxxxx 2.4(b) Indemnity Escrow Agreement Section 1.2(b2.4(b) Extended Examination Initial Settlement Statement Section 12.2 Inspection Indemnitees Section 7.2 Insurance Policies Section 4.24 Interests Recitals Interim Financial Statements Section 4.10 Joint Instructions Section 2.4(a) Lock-Up Period Section 8.1(c) Holdback Amount 7.16 Outstanding Capital Commitments Section 8.6(d) Indemnified Party 4.19 Parent Preamble Parent SEC Reports Section 11.5 Indemnifying Party 6.14 Parent Shares Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) Notice Period Section 11.5 Oil and Gas Properties Section 1.1 2.2 Parties Preamble Permitted Encumbrances Section 8.2(d8.5 Property Records Section 7.1 Purchase Price Allocation Section 7.8(e)(i) PostRegistration Rights Agreement Section 10.2(g) Required Financial Information Section 7.18(b) Required Permit Section 4.26 Defined Term Reference Seller Preamble Seller Contracts Section 7.13(a) Seller Indemnitees Section 13.1 Seller Related Parties Section 7.19 Seller’s Indemnified Claims Section 13.1 Site Assessment Section 7.1 Surviving Provisions Section 11.2(a) T&K Section 17.15 Target Closing Date Section 10.1 Tail Policy Section 7.7(b) Termination Date Section 11.1(b)(i) Third Party Claim Section 13.6(b) Third-Closing Party Operators Section 7.1 Title Defect Section 8.5(b8.6 Title Defect Amount Section 8.3 Title Defect Property Section 8.3 Title Defect Threshold Section 8.3 Transition Services Agreement Section 10.2(m) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e) Rules Section 8.4 Sellers’ Losses Section 11.3 Execution VersionArticle II.

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b8.1(c)(i) Assignment Section 9.1(f) Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 8.1(a) Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.4(c) Defect Dispute Section 8.4 8.3 Defects Escrow Section 8.5(b8.4(c) Defects Escrow Agent Section 8.5(b8.4(c) Defects Escrow Agreement Section 8.5(b8.4(c) Defensible Title Section 8.2(c8.1(d)(i) Deposit Section 2.4(a) Dominion Heritage Leases Environmental Defect Section 4.10 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Environmental Defect Value Section 8.2(e)(ii) Environmental Information Section 8.2(b) Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Defined Term Reference Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) 8.3 Notice Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d8.1(d)(ii) Post-Closing Defect Section 8.5(b8.4(c) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e1.1(f) Remedies for Title Defects Section 8.1(b) Request Date Section 2.3(c) Rules Section 8.4 8.3 Scheduled Production Sales Contracts Section 4.9 Sellers’ Losses Section 11.3 Execution VersionSuspended Proceeds Section 7.11 Survival Date Section 11.2(b) Title Defect Section 8.1(d)(iii) Title Defect Amount Section 8.1(c) Title Defect Notice Section 8.1(b) Title Defect Property Section 8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.118.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: 52 Term Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 2.2 Adjustment Amount Section 3.5 AFE Section 4.13 Agreement Preamble Allocated Value Section 8.2(b3.1(c)(i) Assignment Assets Section 9.1(f1.1 Assumed Obligations Section 11.4(a) Buyer’s Losses Business Days Section 11.2 Buyer’s Title Review 2.3(a) Business Employees Section 8.1(a11.12(a) Claim Notice Section 11.4(e)(i) Closing Article III Section 10.1 Closing Date Article III Section 10.1 Code Section 4.5 Continuing Employee Section 11.12(c) Cure Period Section 8.5(b3.6(b) Depth Severance Section 8.6(a) Depth Severance Deductible Amount Section 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 3.4 Defects Escrow Section 8.5(b3.6(a) Defects Escrow Agent Section 8.5(b3.6(a) Defects Escrow Agreement Section 8.5(b3.6(a) Defects Escrow Amount Section 3.6(a) Defensible Title Section 8.2(c3.1(d)(i) Deferred Adjustment Claim Section 3.5 Deferred Matters Date Section 3.5 Deposit Section 2.1(c) Deposit Escrow Agreement Section 2.4(a2.1(e) Dominion Heritage Leases Disputes Section 4.10 17.1(a) Documents Section 14.1 Effective Time Section 1.1 Entech Section 1.2 Environmental Claims Section 16.2 Environmental Defect Section 3.2(e)(i) Environmental Defect Notice Section 3.2(c) Environmental Defect Value Section 3.2(e)(ii) Environmental Information Section 3.2(b) Escrow Agent Section 2.1(c) Examination Period Section 8.1(a3.1(a) Estimated Adjusted Purchase Price Section 2.3(a) Excluded Assets Section 1.2 Existing Deep Xxxxx 1.1 Filings Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) 17.24 Indemnified Party Section 11.5 11.4(e)(i) Indemnifying Party Section 11.5 11.4(e)(i) Independent Expert Section 8.4 Lands Section 1.1(b17.1(a) Material Title Benefit Section 8.3(b) Notice Interim Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d) Post-Closing Defect Section 8.5(b) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e) Rules Section 8.4 Sellers’ Losses Section 11.3 Execution Version6.1

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.113.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Agreed Amount Section 10.6 Allocated Value Section 8.2(b8.1(c)(i) Arbol Resources, Inc. Preamble Assignment Section 9.1(f9.1(e) Basic Documents Section 4.7(a) Buyer Preamble Buyer Indemnified Losses Section 10.4 Buyer Indemnified Parties Section 10.3 Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Losses Environmental Review Section 11.2 8.2(a) Buyer’s Title Review Section 8.1(a) Claim Section 10.5 Claim Notice Section 10.5 Claimed Amount Section 10.6 Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.4(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) 8.3 Defensible Title Section 8.1(e)(i) Environmental Defect Section 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Deposit Environmental Defect Value Section 2.4(a8.2(e)(ii) Dominion Heritage Leases Environmental Information Section 4.10 8.2(b) Equitable Relief Provisions Section 12.3 Examination Period Section 8.1(a) Excluded Assets Final Settlement Date Section 1.2 Existing Deep Xxxxx Section 1.2(b2.3(c) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands 8.3 Losses Section 1.1(b) Material Title Benefit Section 8.3(b) Notice Period Section 11.5 Oil and Gas Properties Section 1.1 10.1 Party; Parties Preamble Permitted Encumbrances Section 8.2(d8.1(e)(ii) Phase II Extensions Section 8.2(a) Post-Closing Defect Section 8.5(b8.4(c) Properties Property Taxes Section 1.1 Purchase Price 7.13(a) Proposals Section 2.1 Records Section 1.1(e) Rules Section 8.4 Sellers’ Losses Section 11.3 Execution Version6.2(a)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Section 2.3(c) Accounting Referee Section 2.3(c) Adjusted Purchase Price Section 2.1 Allocated Value Section 8.2(b8.1(c)(i) Assignment Section 9.1(f) Buyer’s Environmental Consultant Section 8.2(a) Buyer’s Environmental Review Section 8.2(a) Buyer’s Losses Section 11.2 Buyer’s Title Review Section 8.1(a) Closing Article III Closing Date Article III Cure Period Section 8.5(b) Depth Severance Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c8.4(c) Defect Dispute Section 8.4 8.3 Defects Escrow Section 8.5(b8.4(c) Defects Escrow Agent Section 8.5(b8.4(c) Defects Escrow Agreement Section 8.5(b8.4(c) Defensible Title Section 8.2(c8.1(d)(i) Deposit Section 2.4(a) Dominion Heritage Leases Environmental Defect Section 4.10 8.2(e)(i) Environmental Defect Notice Section 8.2(c) Environmental Defect Value Section 8.2(e)(ii) Environmental Information Section 8.2(b) Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 43 Defined Term Reference Indemnifying Party Section 11.5 Independent Expert Section 8.4 Lands Section 1.1(b) Material Title Benefit Section 8.3(b) 8.3 Notice Period Section 11.5 Oil and Gas Properties Section 1.1 Permitted Encumbrances Section 8.2(d8.1(d)(ii) Post-Closing Defect Section 8.5(b8.4(c) Properties Section 1.1 Purchase Price Section 2.1 Records Section 1.1(e1.1(f) Remedies for Title Defects Section 8.1(b) Request Date Section 2.3(c) Rules Section 8.4 8.3 Scheduled Production Sales Contracts Section 4.9 Sellers’ Losses Section 11.3 Execution VersionSuspended Proceeds Section 7.11 Survival Date Section 11.2(b) Title Defect Section 8.1(d)(iii) Title Defect Amount Section 8.1(c) Title Defect Notice Section 8.1(b) Title Defect Property Section 8.1(b)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference AAA Section 13.1(d)(i) Accounting Dispute Section 2.3(c1.3(e) Accounting Referee Section 2.3(c1.3(e) Additional Transportation Costs Section 12.10(a) Adjusted Purchase Price Section 2.1 1.2 Allocated Value Section 8.2(b9.1(c)(i) Assignment Allocation Section 9.1(f8.8(e) Anadarko Section 9.1(d)(i)(B) Audited Financial Statements Section 4.8 Bridge Facility Section 8.12 Buyer's Environmental Consultant Section 9.2(a) Buyer’s Losses 's Environmental Review Section 11.2 9.2(a) Buyer’s 's Title Review Section 8.1(a9.1(a) Closing Article III II Closing Date Article III II Closing Date Adjusted Working Capital Amount Section 1.3(d) Company Contracts Section 4.14 (a) Cure Period Section 8.5(b9.5(b) Depth Severance Damages Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 12.2 Defects Escrow Section 8.5(b9.5(a) Defects Escrow Agent Section 8.5(b9.5(a) Defects Escrow Agreement Section 8.5(b9.5(a) Defensible Title Section 8.2(c9.1(d)(i) Deposit Disputes Section 2.4(a13.1(a) Dominion Heritage Leases Environmental Defect Section 4.10 9.2(e)(i) Environmental Defect Notice Section 9.2(c) Environmental Defect Value Section 9.2(e)(ii) Environmental Information Section 9.2(b) Examination Period Section 8.1(a9.1(a) Excluded Assets Exploration Agreement Section 1.2 Existing Deep Xxxxx 9.1(d)(i)(B) Financial Statements Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) 4.8 Indemnified Party Section 11.5 12.4 Indemnifying Party Section 11.5 12.4 Independent Expert Section 8.4 Lands 13.1(b) Interim Balance Sheet Section 1.1(b4.8 Xxxx-XxXxx Dispute Section 12.10(a) Material Title Net Tax Benefit Section 8.3(b) 12.8 Notice Period Section 11.5 12.4 Oil and Gas Properties Contracts Section 1.1 4.14(b) Permitted Encumbrances Section 8.2(d9.1(d)(ii) Post-Closing Adjusted Working Capital Amount Section 1.3(d) Post-Closing Defect Section 8.5(b9.5(a) Properties Section 1.1 Purchase Price Section 2.1 Records 1.2 Remedies for Title Defects Section 1.1(e9.1(b) Request Date Section 1.3(e) Rules Section 8.4 Sellers’ Losses 13.1(b)(i) Survival Period Section 11.3 Execution Version12.1(a) Title Defect Section 9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Ultimate Per Unit Cost Section 12.10(a) Unaudited Financial Statements Section 4.9

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and recitals to this Agreement and in Section 14.11.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Acceptable Issuing Bank Section 2.3(c9.15 Aggregate Per Member Cash Consideration Section 3.1(a) Accounting Referee Aggregate Per Member Consideration Section 2.3(c3.1(a) Adjusted Purchase Price Agreement Preamble Allocation Statement Section 2.1 Allocated Value 9.9(d) Arrow Pipeline Recitals Base Merger Consideration Section 8.2(b3.2 Bidder Confidentiality Agreements Section 9.6(b) Assignment Buyer Preamble Buyer Financial Statements Section 9.1(f7.16 Buyer Financing Section 9.14(a) Buyer Indemnified Parties Section 13.2(a) Buyer SEC Documents Section 7.15(a) Buyer’s Losses Indemnified Claim Section 11.2 Buyer’s Title Review 13.2(a) Cap Section 8.1(a13.2(d) Closing Article III Section 2.2 Closing Date Article III Cure Section 2.2 Closing Payment Section 12.1 Company Preamble Company Contract Section 4.12(a) Company Counsel Section 15.11(a) Consents Section 4.7 Continuing Employees Section 9.8(a) Custody Agreement Section 9.18 Damages Section 9.2 De Minimis Threshold Section 13.2(d) Debt Payoff Amount Section 3.3(d) Deductible Section 13.2(d) Disguised Sale Section 9.9(a) DLLCA Recitals Effective Time Section 2.3 Escrow Term Section 13.6(b) Estimated Closing Date Balance Sheet Section 12.1 Estimated Closing Items Section 12.1 Estimated Merger Consideration Adjustment Amount Section 12.1 Estimated Net Working Capital Section 12.1 Estimated Reimbursable Capital Expenditures Section 12.1 Excess Payment Section 12.2(b) Execution Date Preamble Final Closing Date Balance Sheet Section 12.2(a) Final Closing Items Section 12.2(a) Final Merger Consideration Adjustment Amount Section 12.2(a) Final Net Working Capital Section 12.2(a) Final Reimbursable Capital Expenditures Section 12.2(a) Final Settlement Statement Section 12.2(c) Financial Statements Section 4.23(a) Fundamental Representations and Warranties Section 13.3(a)(ii) General Survival Period Section 8.5(b13.3(a)(i) Depth Severance Indemnitee Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) Defensible Title Section 8.2(c) Deposit Section 2.4(a) Dominion Heritage Leases Section 4.10 Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 13.4 Independent Expert Section 8.4 Lands 12.2(c) Intellectual Property Section 1.1(b4.17(a) Material Title Benefit Interim Balance Sheet Section 8.3(b4.23(a) Notice Period Leases Section 11.5 Oil and Gas Properties 4.16(b) Member Representative Section 1.1 Permitted Encumbrances 15.13 Members’ Indemnified Claims Section 8.2(d13.1(a) Merger Recitals Merger Sub Preamble MHA Recitals MHA Acquisition Recitals Multiemployer Plan Section 4.24(d) Offsite Release Liability Section 4.14(b) Party Preamble Policies Section 4.21(a) Post-Closing Defect Date Straddle Period Section 8.5(b9.9(b)(iii) Properties Pre-Closing Date Straddle Period Section 1.1 Purchase Price 9.9(b)(iii) Pre-Closing Tax Returns Section 9.9(b)(i) Required Buyer Filings Section 9.14(b) Seller Indemnified Parties Section 13.1(a) Sponsor Letters of Credit Section 9.15 Sponsors Section 9.15 Straddle Period Tax Returns Section 9.9(b)(ii) Survival Period Section 13.3(c) Surviving Company Section 2.1 Records Tax Allocation Referee Section 1.1(e9.9(d) Rules TSA Termination Date Section 8.4 Sellers’ Losses 9.8(a) Zenergy Employees Section 11.3 Execution Version4.24(i)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and the recitals to this Agreement and in Section 14.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute 2005 Financial Statements Section 2.3(c4.9(a) Accounting Referee AAA Section 2.3(c13.1(d)(i) Adjusted Purchase Price Section 2.1 Allocated Value 1.2 Allocation Section 8.2(b8.8(d) Assignment Basic Documents Section 9.1(f4.14(b) Buyer’s Losses Section 11.2 Buyer Introduction Buyer’s Title Review Section 8.1(a9.1(a) CERCLA Section 4.20 Chief Holdings Introduction Chief Midstream Holdings Introduction Closing Article III II Closing Date Article III Cure Period II COBRA Section 8.5(b8.7 Company Introduction Company Contracts Section 4.14(a) Depth Severance Damages Section 8.6(a) Depth Severance 12.2 Deductible Amount Section 8.6(b9.2 Defensible Title Section 9.1(d)(i) Depth Severance Notice Disputes Section 8.6(c13.1(a) Defect Dispute Environmental Liabilities Section 8.4 Defects Escrow Section 8.5(b) Defects 4.20 Escrow Agent Section 8.5(b) Defects 12.10 Escrow Agreement Section 8.5(b) Defensible Title 12.10 Escrow Amount Section 8.2(c) 12.10 Escrow Deposit Section 2.4(a1.4(a) Dominion Heritage Leases Escrow Term Section 4.10 12.10 Examination Period Section 8.1(a9.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx 8.15 Final Settlement Statement Section 1.2(b1.3(d) Extended Examination Period Financial Statements Section 8.1(c4.9(a) Holdback Amount HSR Act Section 8.6(d) 8.16 Indemnified Party Section 11.5 12.5 Indemnifying Party Section 11.5 12.5 Independent Expert Section 8.4 Lands 13.1(c) Interim Financial Statements Section 1.1(b4.9(a) Material Title Benefit Interests Recital A 49 Defined Term Reference Midstream Reorganization Section 8.3(b1.5 Midstream 2005 Financial Statements Section 4.9(b) Midstream Financial Statements Section 4.9(b) Midstream Interim Financial Statements Section 4.9(b) NGA Section 4.15 NGPA Section 4.15 Notice Period Section 11.5 Oil and Gas Properties Section 1.1 12.5 Permitted Encumbrances Section 8.2(d9.1(d)(ii) Post-Closing Defect Section 8.5(b) Properties Section 1.1 Adjusted Purchase Price Section 2.1 Records 1.3(d) Purchase Price Section 1.1(e1.2 Regulatory Agencies Section 4.24 Remedies for Title Defects Section 9.1(b) Rules Section 8.4 13.1(d)(i) SEC Section 8.19 Sellers Introduction Sellers’ Losses Representative Introduction Title Defect Section 11.3 Execution Version9.1(d)(iii) Title Defect Amount Section 9.1(c) Title Defect Notice Section 9.1(b) Title Defect Property Section 9.1(b) Transition Services Agreement Section 10.1(h)

Certain Additional Defined Terms. In addition to such terms as are defined in the preamble of and recitals to this Agreement and in Section 14.11.1, the following terms are used in this Agreement as defined in the Articles or Sections set forth opposite such terms: Defined Term Reference Accounting Dispute Acceptable Issuing Bank Section 2.3(c9.15 Aggregate Per Member Cash Consideration Section 3.1(a) Accounting Referee Aggregate Per Member Consideration Section 2.3(c3.1(a) Adjusted Purchase Price Agreement Preamble Allocation Statement Section 2.1 Allocated Value 9.9(d) Arrow Pipeline Recitals Base Merger Consideration Section 8.2(b3.2 Bidder Confidentiality Agreements Section 9.6(b) Assignment Buyer Preamble Buyer Financial Statements Section 9.1(f7.16 Buyer Financing Section 9.14(a) Buyer Indemnified Parties Section 13.2(a) Buyer SEC Documents Section 7.15(a) Buyer’s Losses Indemnified Claim Section 11.2 Buyer’s Title Review 13.2(a) Cap Section 8.1(a13.2(d) Closing Article III Section 2.2 Closing Date Article III Cure Section 2.2 Closing Payment Section 12.1 Company Preamble Company Contract Section 4.12(a) Company Counsel Section 15.11(a) Consents Section 4.7 Continuing Employees Section 9.8(a) Custody Agreement Section 9.18 Damages Section 9.2 De Minimis Threshold Section 13.2(d) Debt Payoff Amount Section 3.3(d) Deductible Section 13.2(d) Disguised Sale Section 9.9(a) DLLCA Recitals Effective Time Section 2.3 Escrow Term Section 13.6(b) Estimated Closing Date Balance Sheet Section 12.1 Estimated Closing Items Section 12.1 Estimated Merger Consideration Adjustment Amount Section 12.1 Estimated Net Working Capital Section 12.1 Estimated Reimbursable Capital Expenditures Section 12.1 Excess Payment Section 12.2(b) Execution Date Preamble Final Closing Date Balance Sheet Section 12.2(a) Final Closing Items Section 12.2(a) Final Merger Consideration Adjustment Amount Section 12.2(a) Final Net Working Capital Section 12.2(a) Final Reimbursable Capital Expenditures Section 12.2(a) Final Settlement Statement Section 12.2(c) Financial Statements Section 4.23(a) Fundamental Representations and Warranties Section 13.3(a)(ii) General Survival Period Section 8.5(b13.3(a)(i) Depth Severance Indemnitee Section 8.6(a) Depth Severance Amount Section 8.6(b) Depth Severance Notice Section 8.6(c) Defect Dispute Section 8.4 Defects Escrow Section 8.5(b) Defects Escrow Agent Section 8.5(b) Defects Escrow Agreement Section 8.5(b) Defensible Title Section 8.2(c) Deposit Section 2.4(a) Dominion Heritage Leases Section 4.10 Examination Period Section 8.1(a) Excluded Assets Section 1.2 Existing Deep Xxxxx Section 1.2(b) Extended Examination Period Section 8.1(c) Holdback Amount Section 8.6(d) Indemnified Party Section 11.5 Indemnifying Party Section 11.5 13.4 Independent Expert Section 8.4 Lands 12.2(c) Intellectual Property Section 1.1(b4.17(a) Material Title Benefit Interim Balance Sheet Section 8.3(b4.23(a) Notice Period Leases Section 11.5 Oil and Gas Properties 4.16(b) Member Representative Section 1.1 Permitted Encumbrances 15.13 Members’ Indemnified Claims Section 8.2(d13.1(a) Merger Recitals Merger Sub Preamble MHA Recitals MHA Acquisition Recitals Multiemployer Plan Section 4.24(d) Offsite Release Liability Section 4.14(b) Party Preamble Policies Section 4.21(a) Post-Closing Defect Date Straddle Period Section 8.5(b9.9(b)(iii) Properties Pre-Closing Date Straddle Period Section 1.1 Purchase Price 9.9(b)(iii) Pre-Closing Tax Returns Section 9.9(b)(i) Required Buyer Filings Section 9.14(b) Seller Indemnified Parties Section 13.1(a) Sponsor Letters of Credit Section 9.15 Sponsors Section 9.15 Straddle Period Tax Returns Section 9.9(b)(ii) Survival Period Section 13.3(c) Surviving Company Section 2.1 Records Tax Allocation Referee Section 1.1(e9.9(d) Rules TSA Termination Date Section 8.4 Sellers’ Losses Section 11.3 Execution Version9.8(a)