Synonym: Hydrocarbon Reservoir = Hydrocarbon Deposit
Petroleum Reservoir or its part with dominating petroleum hydrocarbons saturation.
It normally classifies as Gas Reservoir and Oil Reservoir.
Sometimes the two share the same Petroleum Reservoir with Gas Reservoir overlying Saturated Oil Reservoir.
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology / Petroleum Reservoir