| Continent | Oil and gas geological structures in % of total deposit area | Total, % | |
| Onshore, % | Offshore, % | ||
| Australia | 1.1 | 0.5 | 1.6 |
| Africa | 4.0 | 1.4 | 5.4 |
| South America | 4.1 | 1.1 | 5.2 |
| North America | 19.8 | 3.3 | 23.1 |
| Europe | 20.7 | 7.9 | 28.6 |
| Asia | 31.4 | 4.6 | 36.0 |
| Total | 81.1 | 18.8 | 99.9 |