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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Revenue [Abstract] |
Schedule of Information on Revenue | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts in US$ ‘000 |  | 2021 |  | 2020 |  | 2019
Sale of crude oil |  | 647,559 |  | 359,640 |  | 579,030
Sale of gas |  | 40,984 |  | 34,052 |  | 49,877
​ |  | 688,543 |  | 393,692 |  | 628,907

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