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Property, plant and equipment (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) item | Dec. 31, 2020 USD ($) item | Dec. 31, 2019 USD ($) item
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Number of Exploratory Wells | item | 3 |  |
Property, plant and equipment | $ 614,047 | $ 614,665 | $ 567,788
Exploration and evaluation assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment | 100,470 | 78,614 | 48,036
Construction in Progress [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment | 27,204 | 18,848 | 69,587
seismic and other exploratory assets [Member] | Exploration and evaluation assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment | 90,166 | 75,485 | 44,047
Exploration Wells [Member] | Exploration and evaluation assets [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property, plant and equipment | $ 10,304 | $ 3,129 | $ 3,989
Number of unsuccessful exploration wells | item | 2 | 3 | 5
Exploration Wells [Member] | Exploration and evaluation assets [member] | Brazil [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Number of unsuccessful exploration wells | item |  |  | 1
Exploration Wells [Member] | Exploration and evaluation assets [member] | Argentina [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Number of unsuccessful exploration wells | item |  |  | 4

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- Definition Number of exploratory wells. + References No definition available. + Details
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- Definition The number of unsuccessful exploration wells. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_a&doctype=Standard -URIDate 2021-03-24 + Details
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