Fluids which may occur in petroleum reservoir, either naturally or as a result of Anthropogenic Invasion:
| Liquid hydrocarbons | Gases hydrocarbons | Water |
|---|---|---|
| Oil | Natural gas | Formation water |
| Condensate | Solution gas | Injected water |
| Injected gas |
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology