Reservoir Types

Oil Reservoir

Reservoir temperature is less than the critical temperature of the reservoir fluids.

Under saturated

Initial reservoir pressure is greater than the bubble point pressure.

Saturated

Initial reservoir pressure is equal to the bubble point pressure.

 Gas-Cap

Initial reservoir pressure is below the bubble point pressure. In this case the reservoir is a two phase reservoir with the gas or vapour phase underlain by the oil phase.

Gas Reservoir

Reservoir temperature is greater than the critical temperature of the hydrocarbon fluid.

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