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v3.23.1

Supplemental information on oil and gas activities (Schedule of Net Proved Reserves of Oil, Condensate and Natural Gas) (Details) | 12 Months Ended
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Dec. 31, 2022 MBbls MMcf | Dec. 31, 2021 MMcf MBbls | Dec. 31, 2020 MMcf MBbls
Oil And Condensates [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 81,947 | 92,907 | 116,602
Increase (decrease) attributable to: |  |  |
Revisions | (2,282) | (3,955) | (4,530)
Extensions and discoveries | 836 | 3,978 | 4,824
Purchase or (Disposal) of Minerals in place | (1,760) |  | (12,357)
Productions | (12,432) | (10,983) | (11,632)
Reserves | 66,309 | 81,947 | 92,907
Oil And Condensates [Member] | Colombia [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 78,785 | 89,057 | 90,609
Increase (decrease) attributable to: |  |  |
Revisions | (2,677) | (3,207) | (1,964)
Extensions and discoveries | 204 | 3,375 | 4,545
Purchase or (Disposal) of Minerals in place | 0 |  | 6,853
Productions | (11,924) | (10,440) | (10,986)
Reserves | 64,388 | 78,785 | 89,057
Oil And Condensates [Member] | Chile [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 1,330 | 2,027 | 3,707
Increase (decrease) attributable to: |  |  |
Revisions | 422 | (597) | (1,825)
Extensions and discoveries |  | 0 | 279
Purchase or (Disposal) of Minerals in place |  |  | 0
Productions | (161) | (100) | (134)
Reserves | 1,591 | 1,330 | 2,027
Oil And Condensates [Member] | Brazil [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 43 | 34 | 48
Increase (decrease) attributable to: |  |  |
Revisions | (27) | 18 | (7)
Extensions and discoveries |  | 0 |
Purchase or (Disposal) of Minerals in place |  |  | 0
Productions | (8) | (9) | (7)
Reserves | 8 | 43 | 34
Oil And Condensates [Member] | Argentina [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 1,789 | 1,789 | 3,028
Increase (decrease) attributable to: |  |  |
Revisions |  | (169) | (734)
Extensions and discoveries |  | 603 |
Purchase or (Disposal) of Minerals in place | (1,760) |  | 0
Productions | (29) | (434) | (505)
Reserves | 0 | 1,789 | 1,789
Oil And Condensates [Member] | Ecuador [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 0 |  |
Increase (decrease) attributable to: |  |  |
Revisions |  | 0 |
Extensions and discoveries | 632 | 0 |
Purchase or (Disposal) of Minerals in place |  |  | 0
Productions | (310) | 0 | 0
Reserves | 322 | 0 |
Oil And Condensates [Member] | Peru [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | 0 |  | 19,210
Increase (decrease) attributable to: |  |  |
Revisions |  | 0 |
Extensions and discoveries |  | 0 |
Purchase or (Disposal) of Minerals in place |  |  | (19,210)
Productions |  | 0 | 0
Reserves | 0 | 0 |
Naturals gas [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | MMcf | 34,946 | 45,936 | 44,245
Increase (decrease) attributable to: |  |  |
Revisions | MMcf | 756 | (705) | 2,133
Extensions and discoveries | MMcf |  |  | 10,456
Purchase or (Disposal) of Minerals in place | MMcf | (3,227) |  |
Productions | MMcf | (7,864) | (10,285) | (10,898)
Reserves | MMcf | 24,611 | 34,946 | 45,936
Naturals gas [Member] | Colombia [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | MMcf | 1,207 | 1,695 | 2,319
Increase (decrease) attributable to: |  |  |
Revisions | MMcf | 141 | 14 | (211)
Extensions and discoveries | MMcf |  |  | 0
Purchase or (Disposal) of Minerals in place | MMcf | 0 |  |
Productions | MMcf | (283) | (502) | (413)
Reserves | MMcf | 1,065 | 1,207 | 1,695
Naturals gas [Member] | Chile [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | MMcf | 16,759 | 24,715 | 20,819
Increase (decrease) attributable to: |  |  |
Revisions | MMcf | 1,501 | (3,553) | (385)
Extensions and discoveries | MMcf |  |  | 10,456
Purchase or (Disposal) of Minerals in place | MMcf | 0 |  |
Productions | MMcf | (4,157) | (4,403) | (6,175)
Reserves | MMcf | 14,103 | 16,759 | 24,715
Naturals gas [Member] | Brazil [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | MMcf | 13,601 | 13,927 | 14,872
Increase (decrease) attributable to: |  |  |
Revisions | MMcf | (886) | 3,470 | 1,840
Extensions and discoveries | MMcf |  |  | 0
Purchase or (Disposal) of Minerals in place | MMcf | 0 |  |
Productions | MMcf | (3,272) | (3,796) | (2,785)
Reserves | MMcf | 9,443 | 13,601 | 13,927
Naturals gas [Member] | Argentina [Member] |  |  |
Disclosure Of Supplemental information on oil and gas activities [Line Items] |  |  |
Reserves | MMcf | 3,379 | 5,599 | 6,235
Increase (decrease) attributable to: |  |  |
Revisions | MMcf |  | (636) | 889
Purchase or (Disposal) of Minerals in place | MMcf | (3,227) |  |
Productions | MMcf | (152) | (1,584) | (1,525)
Reserves | MMcf |  | 3,379 | 5,599

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