Oil and Gas Producing Activities

12 Months Ended

Dec. 31, 2020

Oil and Gas Exploration and Production Industries Disclosures [Abstract]

Set forth below is certain information regarding the aggregate capitalized costs of oil and gas properties and costs incurred by the Company for its oil and natural gas property acquisition, development and exploration activities:

Capitalized Costs


	As of December 31,
	2019		2020
	(In thousands)
Proved properties:
Leasehold costs	$	2,912,196	$	3,010,760
Wells and related equipment and facilities	1,165,317		1,636,428
Accumulated depreciation depletion and amortization	(485,851)		(901,003)
	3,591,662		3,746,185
Unproved properties	410,897		332,765
	$	4,002,559	$	4,078,950

Costs Incurred


	Predecessor		Successor
	For the Period from January 1, 2018 through August 13, 2018		For the Period from August 14, 2018 through December 31, 2018		Year Ended December 31, 2019		Year Ended December 31, 2020
	(In thousands)
Property acquisitions	$	39,323	$	21,013	$	2,097,451	$	—
Exploration and development:
Exploratory leasehold costs	—		—		—		7,949
Development leasehold costs	2,848		1,715		7,603		13,022
Development drilling and completion costs	90,840		148,745		493,625		436,074
Other development costs	13,871		13,612		9,339		34,525
Total capital expenditures	$	146,882	$	185,085	$	2,608,018	$	491,570