| Reservoir Engineering | Field development Planning with inputs from below disciplines |
| Petroleum Geology | Studying reserves structure and volumes |
| Petrophysics | Studying rock properties |
| Well & Log Analysis | Designing and interpretation of well logs |
| Well Testing | Designing and interpretation of well tests |
| Reservoir Simulations | Modelling well and reservoir flow dynamics and generating forecasts |
| Production Technology | Well performance analysis and production optimisation |
See Also
Upstream (Exploration & Production = E & P)