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Property, plant and equipment | 12 Months Ended
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Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [abstract] |
Disclosure of property, plant and equipment [text block] | Note 20 Property, plant and equipment ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Furniture, | ​ | Production | ​ | Buildings | ​ | ​ | ​ | Exploration | ​ | ​
​ | ​ | Oil & gas | ​ | equipment | ​ | facilities and | ​ | and | ​ | Construction in | ​ | and evaluation | ​ | ​
Amounts in US$’000 | ​ | properties | ​ | and vehicles | ​ | machinery | ​ | improvements | ​ | progress | ​ | assets(a) | ​ | Total
Cost as of January 1, 2019 | ​ | 717,510 | ​ | 17,748 | ​ | 172,094 | ​ | 11,554 | ​ | 60,597 | ​ | 59,992 | ​ | 1,039,495
Additions | ​ | 14,696 | (b) | 2,052 | ​ | 381 | ​ | 159 | ​ | 96,012 | ​ | 27,449 | ​ | 140,749
Currency translation differences | ​ | (3,022) | ​ | (414) | ​ | (561) | ​ | (8) | ​ | (106) | ​ | (449) | ​ | (4,560)
Disposals | ​ | — | ​ | (102) | ​ | (101) | ​ | — | ​ | — | ​ | (59) | ​ | (262)
Write-off / Impairment | ​ | (7,559) | (c) | — | ​ | — | (c) | — | ​ | — | (c) | (18,290) | (d) | (25,849)
Transfers | ​ | 83,010 | ​ | 265 | ​ | 24,183 | ​ | 65 | ​ | (86,916) | ​ | (20,607) | ​ | —
Reclassification (g) | ​ | 26,302 | ​ | — | ​ | (23,489) | ​ | — | ​ | — | ​ | — | ​ | 2,813
Cost as of December 31, 2019 | ​ | 830,937 | ​ | 19,549 | ​ | 172,507 | ​ | 11,770 | ​ | 69,587 | ​ | 48,036 | ​ | 1,152,386
Additions | ​ | (2,863) | (b) | 1,180 | ​ | — | ​ | 422 | ​ | 55,267 | ​ | 18,429 | ​ | 72,435
Acquisitions (Note 36.1) | ​ | 185,533 | ​ | 553 | ​ | 16,181 | ​ | 212 | ​ | 1,199 | ​ | 73,310 | ​ | 276,988
Currency translation differences | ​ | (14,399) | ​ | (194) | ​ | (1,036) | ​ | (59) | ​ | (47) | ​ | (401) | ​ | (16,136)
Disposals | ​ | — | ​ | (555) | ​ | — | ​ | (227) | ​ | (33) | ​ | — | ​ | (815)
Write-off / Impairment | ​ | (77,667) | (c) | — | ​ | (11,357) | ​ | — | ​ | (44,840) | ​ | (52,652) | (e) | (186,516)
Transfers | ​ | 48,361 | ​ | 174 | ​ | 21,534 | ​ | 324 | ​ | (62,285) | ​ | (8,108) | ​ | —
Assets held for sale (Note 36.2.2) | ​ | (1,285) | ​ | — | ​ | — | ​ | — | ​ | — | ​ | — | ​ | (1,285)
Cost as of December 31, 2020 | ​ | 968,617 | ​ | 20,707 | ​ | 197,829 | ​ | 12,442 | ​ | 18,848 | ​ | 78,614 | ​ | 1,297,057
Additions | ​ | (1,094) | (b) | 930 | ​ | — | ​ | — | ​ | 82,094 | ​ | 46,234 | ​ | 128,164
Currency translation differences | ​ | (3,284) | ​ | (43) | ​ | (246) | ​ | (16) | ​ | (18) | ​ | (30) | ​ | (3,637)
Disposals | ​ | — | ​ | (1,762) | ​ | (900) | ​ | (978) | ​ | (3,372) | ​ | (338) | ​ | (7,350)
Write-off / Impairment | ​ | (1,575) | (c) | — | ​ | (2,759) | (c) | — | ​ | — | (c) | (12,262) | (f) | (16,596)
Transfers | ​ | 68,315 | ​ | 58 | ​ | 13,305 | ​ | 391 | ​ | (70,321) | ​ | (11,748) | ​ | —
Assets held for sale (Note 36.3.1) | ​ | (73,047) | ​ | (1,178) | ​ | (6,052) | ​ | (177) | ​ | (27) | ​ | — | ​ | (80,481)
Cost as of December 31, 2021 | ​ | 957,932 | ​ | 18,712 | ​ | 201,177 | ​ | 11,662 | ​ | 27,204 | ​ | 100,470 | ​ | 1,317,157
Depreciation and write-down as of January 1, 2019 | ​ | (359,358) | ​ | (13,361) | ​ | (103,704) | ​ | (5,902) | ​ | — | ​ | — | ​ | (482,325)
Depreciation | ​ | (83,276) | ​ | (2,096) | ​ | (16,708) | ​ | (804) | ​ | — | ​ | — | ​ | (102,884)
Disposals | ​ | — | ​ | 85 | ​ | 34 | ​ | — | ​ | — | ​ | — | ​ | 119
Currency translation differences | ​ | 2,492 | ​ | 223 | ​ | 480 | ​ | 110 | ​ | — | ​ | — | ​ | 3,305
Reclassification (g) | ​ | (27,664) | ​ | — | ​ | 24,851 | ​ | — | ​ | — | ​ | — | ​ | (2,813)
Depreciation and write-down as of December 31, 2019 | ​ | (467,806) | ​ | (15,149) | ​ | (95,047) | ​ | (6,596) | ​ | — | ​ | — | ​ | (584,598)
Depreciation | ​ | (89,344) | ​ | (2,317) | ​ | (16,820) | ​ | (490) | ​ | — | ​ | — | ​ | (108,971)
Disposals | ​ | — | ​ | 326 | ​ | — | ​ | 72 | ​ | — | ​ | — | ​ | 398
Currency translation differences | ​ | 8,572 | ​ | 155 | ​ | 1,880 | ​ | 39 | ​ | — | ​ | — | ​ | 10,646
Assets held for sale (Note 36.2.2) | ​ | 133 | ​ | — | ​ | — | ​ | — | ​ | — | ​ | — | ​ | 133
Depreciation and write-down as of December 31, 2020 | ​ | (548,445) | ​ | (16,985) | ​ | (109,987) | ​ | (6,975) | ​ | — | ​ | — | ​ | (682,392)
Depreciation | ​ | (66,011) | ​ | (1,960) | ​ | (12,468) | ​ | (700) | ​ | — | ​ | — | ​ | (81,139)
Disposals | ​ | — | ​ | 1,325 | ​ | 900 | ​ | 838 | ​ | — | ​ | — | ​ | 3,063
Currency translation differences | ​ | 2,219 | ​ | 37 | ​ | 246 | ​ | 16 | ​ | — | ​ | — | ​ | 2,518
Assets held for sale (Note 36.3.1) | ​ | 49,080 | ​ | 915 | ​ | 4,692 | ​ | 153 | ​ | — | ​ | — | ​ | 54,840
Depreciation and write-down as of December 31, 2021 | ​ | (563,157) | ​ | (16,668) | ​ | (116,617) | ​ | (6,668) | ​ | — | ​ | — | ​ | (703,110)
​ | ​ |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​
Carrying amount as of December 31, 2019 | ​ | 363,131 | ​ | 4,400 | ​ | 77,460 | ​ | 5,174 | ​ | 69,587 | ​ | 48,036 | ​ | 567,788
Carrying amount as of December 31, 2020 | ​ | 420,172 | ​ | 3,722 | ​ | 87,842 | ​ | 5,467 | ​ | 18,848 | ​ | 78,614 | ​ | 614,665
Carrying amount as of December 31, 2021 | ​ | 394,775 | ​ | 2,044 | ​ | 84,560 | ​ | 4,994 | ​ | 27,204 | ​ | 100,470 | ​ | 614,047
(a) | Exploration wells movement and balances are shown in the table below; mining property associated with unproved reserves and resources, seismic and other exploratory assets amount to US$ 90,166,000 (US$ 75,485,000 in 2020 and US$ 44,047,000 in 2019).
​
​ | ​ | ​
Amounts in US$ ‘000 | ​ | Total
Exploration wells as of December 31, 2019 | ​ | 3,989
Additions | ​ | 11,016
Acquisitions | ​ | 3,129
Write-offs | ​ | (7,947)
Transfers | ​ | (7,058)
Exploration wells as of December 31, 2020 | ​ | 3,129
Additions | ​ | 25,795
Write-offs | ​ | (6,814)
Transfers | ​ | (11,806)
Exploration wells as of December 31, 2021 | ​ | 10,304
​ As of December 31, 2021, there were three exploratory wells that has been capitalized for a period less than a year amounting to US$ 10,304,000. ​
(b) | Corresponds to the effect of change in estimate of assets retirement obligations.
(c) | See Note 37.
(d) | Corresponds to five unsuccessful exploratory wells, four wells drilled in Argentina (Sierra del Nevado, Puelen and Aguada Baguales Blocks) and a well drilled in Brazil (POT-T-747 Block). The charge also includes the write-off of wells and other exploration costs incurred in previous years in the Argentinean Blocks for which no additional work would be performed. In addition, due to the results from REC-T-94, SEAL-T-268 and POT-T-747 Blocks (Brazil), during December 2019 the Group decided to relinquish these blocks so the associated investment was written off.
(e) | Corresponds to three unsuccessful exploratory wells drilled in the Isla Norte Block (Chile), Llanos 94 Block (Colombia) and CPO-5 Block (Colombia), and exploration costs incurred in previous years in the POT-T-619 Block (Brazil) for which no additional work would be performed. The charge also includes the write-off of seismic and other exploration costs incurred in previous years in the Fell, Campanario, Flamenco and Isla Norte Blocks (Chile), where, as a result of the drilling campaign performed during 2020 and in accordance with the Group’s accounting policy, it cannot be clearly demonstrated that the carrying value of the investment is recoverable.
(f) | Corresponds to two unsuccessful exploratory wells drilled in the Llanos 32 Block (Colombia), other exploration costs incurred in the Fell Block (Chile), an exploratory well drilled in previous years in the CPO-5 Block (Colombia) and other exploration costs incurred in previous years in the PUT-30 Block (Colombia) for which no additional work would be performed.
(g) | Corresponds to the final closing of the sale of the La Cuerva and Yamu Blocks (Colombia).

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