Part of Geology, one of the key areas of Reservoir Study & Modelling and one of the Subsurface E&P Disciplines, related to the locations of the subsurface extractable hydrocarbon deposits with the major concern on the following seven elements in sedimentary basins:
| Source Rock | Reservoir | Seal | Trap | Timing | Maturation | Migration |
Petroleum geology splits into three major areas:
| Depositional facies | Lithological facies | Fluid migration | Hydrocarbon deposits |