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Exploration and evaluation of oil and gas reserves (Details 1) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Exploration costs recognized in the statement of income |  |  |  |
Geological and geophysical expenses | $ (192) | $ (83) | $ (317) | $ (136)
Exploration expenditures written off (includes dry wells and signature bonuses) | (6) | (71) | (38) | (94)
Contractual penalties on local content requirements | 7 | 110 | 7 | 108
Other exploration expenses |  |  |  | (1)
Total expenses | (191) | (44) | (348) | (123)
Cash used in: |  |  |  |
Operating activities | 192 | (81) | 317 | (135)
Investment activities | 241 | (904) | 306 | (980)
Total cash used | $ 433 | $ (985) | $ 623 | $ (1,115)

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- Definition The cash flows from (used in) the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource, classified as investing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2023-en-r&anchor=para_24_b&doctype=Standard -URIDate 2023-03-23 + Details
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