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Acquisitions and Divestitures (Tables)
 12 Months Ended
Dec. 31, 2019
EOG Acquisition  
Business Acquisition [Line Items]  
Fair Value of Acquired Assets and Liabilities The following table summarizes the final adjusted purchase price and the values of assets acquired and liabilities assumed.
Final Adjusted Purchase Price
Total consideration given$54,332  
Final Adjusted Allocation of Purchase Price
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties $43,745  
Undeveloped oil and natural gas properties8,650  
Total oil and natural gas properties included in the full cost pool (1)
52,395  
Gas gathering equipment and other2,340  
Asset retirement obligation(403) 
Fair value of net assets acquired$54,332  
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2.We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates, and risk adjusted discount rates.
Excalibur Acquisition  
Business Acquisition [Line Items]  
Fair Value of Acquired Assets and Liabilities The following table summarizes the final adjusted purchase price and the values of assets acquired and liabilities assumed.
Purchase Price
Total consideration given$29,633  
Allocation of Purchase Price
Oil and natural gas properties included in the full cost pool:
Proved oil and natural gas properties$14,546  
Undeveloped oil and natural gas properties15,502  
Total oil and natural gas properties included in the full cost pool (1)
30,048  
Asset retirement obligation(415) 
Fair value of net assets acquired$29,633  
_________________________ 
1.We used a discounted cash flow model and made market assumptions as to future commodity prices, projections of estimated quantities of oil and natural gas reserves, expectations for timing and amount of future development and operating costs, projections of future rates of production, expected recovery rates, and risk adjusted discount rates.