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Exploration and evaluation of oil and gas reserves | 6 Months Ended
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Jun. 30, 2022
Exploration And Evaluation Of Oil And Gas Reserves |
Exploration and evaluation of oil and gas reserves |
| 18. | Exploration and evaluation of oil and gas reserves
Changes in the balances of capitalized costs directly associated with exploratory wells pending determination of proved reserves and the balance of amounts paid for obtaining rights and concessions for exploration of oil and natural gas (capitalized acquisition costs) are set out in the following table:
Capitalized Exploratory Well Costs / Capitalized Acquisition Costs (*) | Jan-Jun/2022 | Jan-Jun/2021
Property plant and equipment |  |
Opening Balance | 2,376 | 3,024
Additions | 95 | 222
Write-offs | (14) | (178)
Transfers | (42) | (145)
Cumulative translation adjustment | (259) | 104
Closing Balance | 2,156 | 3,027
Intangible Assets | 2,734 | 15,057
Capitalized Exploratory Well Costs / Capitalized Acquisition Costs | 4,890 | 18,084
(*) | Amounts capitalized and subsequently expensed in the same period have been excluded from this table. |  |
Exploration costs recognized in the statement of income and cash used in oil and gas exploration and evaluation activities are set out in the following table:
| Jan-Jun/2022 | Jan-Jun/2021 | Apr-Jun/2022 | Apr-Jun/2021
Exploration costs recognized in the statement of income |  |  |  |
Geological and geophysical expenses | 136 | 154 | 83 | 87
Exploration expenditures written off (includes dry wells and signature bonuses) | 94 | 187 | 71 | 56
Contractual penalties on local content requirements (*) | (108) | 43 | (110) | 28
Other exploration expenses | 1 | 21 | - | 19
Total expenses | 123 | 405 | 44 | 190
Cash used in : |  |  |  |
Operating activities | 135 | 174 | 81 | 106
Investment activities | 980 | 245 | 904 | 130
Total cash used | 1,115 | 419 | 985 | 236
(*) | There was a US$ 127 reversal on June 30, 2022, as described in note 30. |  |  |  |

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- Definition The entire disclosure for exploration and evaluation assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2021-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2021-en-r&doctype=Standard&dita_xref=IFRS06_g23-25_TI -URIDate 2021-03-24 + Details
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