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Oil and Natural Gas Properties
 9 Months Ended
Sep. 30, 2023
Extractive Industries [Abstract]  
Oil and Natural Gas Properties Oil and Natural Gas Properties
Oil and natural gas properties are summarized below:
September 30, 2023December 31, 2022
(In thousands)
Proved$872,204 $516,011 
Unproved110,234 12,770 
Work-in-progress49,026 45,169 
1,031,464 573,950 
Accumulated depletion, amortization and impairment(178,432)(133,848)
Total oil and natural gas properties, net$853,032 $440,102 
Depletion and amortization expense for proved oil and natural gas properties was $17.8 million and $8.2 million, respectively, for the three months ended September 30, 2023 and 2022 and $44.6 million and $21.7 million, respectively, for the nine months ended September 30, 2023 and 2022.
Exploration expense was $231 thousand and $20 thousand, respectively, for the three months ended September 30, 2023 and 2022 and $0.6 million and $1.5 million, respectively, for the nine months ended September 30, 2023 and 2022.
On April 3, 2023, the Company closed on the New Mexico Acquisition. For further information regarding the acquisition, see Note 4 - Acquisitions of Oil and Natural Gas Properties.