Subsurface reservoir containing hydrocarbons with or without formation water.
It's structure and properties are described by Depositional facies structure, Lithological facies structure and Petrophysical rock properties.
| High perm | Medium perm | Low perm | Shale | |
|---|---|---|---|---|
| Gas | ||||
| Gas condensate | ||||
| Light oil | ||||
| Oil | x | |||
| Heavy oil | x | x | ||
| Bitumen | x | x | x |
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology