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Property, Plant and Equipment (Tables)
9 Months Ended
Sep. 30, 2023
Oil and Gas Property [Abstract]  
Schedule of Asset Retirement Obligations

The asset retirement obligations included in the Condensed Consolidated Balance Sheets in current and non-current liabilities, and the changes in that liability were as follows (in thousands):

Asset retirement obligations at December 31, 2022

$

541,661

 

Obligations assumed(1)

 

258,858

 

Obligations incurred

 

297

 

Obligations settled

 

(71,097

)

Obligations divested

 

(19,417

)

Accretion expense

 

63,430

 

Changes in estimate

 

43,116

 

Asset retirement obligations at September 30, 2023

$

816,848

 

Less: Current portion at September 30, 2023

 

69,288

 

Long-term portion at September 30, 2023

$

747,560

 

 

(1)
Assumed in connection with the EnVen Acquisition. See further discussion in Note 2 — Acquisitions and Divestitures.

At September 30, 2023, the Company has (1) restricted cash of $101.8 million inclusive of interest earned to date, held in escrow and (2) the P&A Notes Receivable of $15.8 million to settle future asset retirement obligations. These assets are discussed in Note 1 — Organization, Nature of Business and Basis of Presentation. During the three and nine months ended September 30, 2023, the Company recognized interest income of $0.4 million and $1.0 million, respectively, related to the P&A Notes Receivable.