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Production and operating costs (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Production And Operating Costs [Abstract] |  |  |
Staff costs (Note 11) | $ 16,655 | $ 14,689 | $ 14,213
Share-based payment (Note 11) | 339 | 528 | 329
Royalties | 113,023 | 35,875 | 64,576
Well and facilities maintenance | 17,989 | 15,039 | 27,660
Operation and maintenance | 7,826 | 7,491 | 7,743
Consumables | 19,270 | 16,776 | 17,625
Equipment rental | 8,127 | 8,570 | 10,476
Safety and Insurance costs | 4,216 | 4,505 | 4,107
Gas plant costs | 2,596 | 1,591 | 3,414
Transportation costs | 3,383 | 5,622 | 2,941
Field camp | 4,386 | 3,130 | 2,583
Non-operated blocks costs | 4,941 | 3,442 | 1,353
Other costs | 10,039 | 7,814 | 11,944
Operating expense | $ 212,790 | $ 125,072 | $ 168,964

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- Definition The amount of non operated blocks costs. + References No definition available. + Details
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- Definition The amount of field camp expense. + References No definition available. + Details
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- Definition The amount of gas plant costs. + References No definition available. + Details
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- Definition The amount of cost arising from transportation. + References No definition available. + Details
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- Definition The amount of other operating expense. + References No definition available. + Details
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- Definition The amount of all production and operating expenses. + References No definition available. + Details
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- Definition The amount of share-based payment. + References No definition available. + Details
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- Definition The amount of staff costs. + References No definition available. + Details
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- Definition The amount of well and facilities maintenance expense. + References No definition available. + Details
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- Definition The amount of expense arising from purchased insurance. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of raw materials and consumables used in the production process or in the rendering of services. [Refer: Current raw materials] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 102 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_102&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_99&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of expense recognised on rental activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of expenses incurred for the day-to-day servicing of assets, which may include the cost of labour, consumables or small parts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of expense arising from royalties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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