| Revenues | — | — |
| Revenue from sales | 8,698.46a | 8,511.08a |
| Revenue from pipeline transportation | 143.84a | 128.07a |
| Other income | — | — |
| Gain on foreign exchange rate | 6.49a | 48.13a |
| Gain on remeasuring of financial instruments | 11.09a | 0a |
| Gain on disposal of participating interests | 0a | 73.24a |
| Interest income | 238.34a | 152.27a |
| Other income | 174.59a | 144.55a |
| Total revenues | 9,272.81a | 9,057.33a |
| Expenses | — | — |
| Operating expenses | -1,401.81a | -1,224.84a |
| Exploration expenses | -124.79a | -94.04a |
| Administrative expenses | -516.07a | -486.94a |
| Petroleum royalties | -396.39a | -450.16a |
| Depreciation, depletion and amortisation | -2,688.94a | -2,334.71a |
| Other expenses | — | — |
| Loss on remeasuring of financial instruments | 0a | -55.59a |
| Impairment loss on goodwill | -120a | 0a |
| Finance costs | -334.47a | -294.46a |
| Total expenses | -5,462.47a | -5,060.73a |
| Share of profit of associates and joint ventures | 37.75a | 42.56a |
| Profit before income taxes | 3,848.1a | 4,039.16a |
| Income taxes | -1,621.18a | -1,831.39a |
| Profit for the year | 2,226.92a | 2,207.77a |
| Profit (loss) attributable to: owners of the parent | 2,227.12a | 2,207.83a |
| Profit (loss) attributable to: non-controlling interests | -0.21a | -0.06a |