POSC Specifications Version 3.0 |
Epicentre Standard Values ref_drive_mechanism |
identifier | description | source _reference | source | version | status |
---|---|---|---|---|---|
ref _version .identifier | |||||
solution gas drive | Oil is mobilized by the expansion of gas dissolved in the reservoir fluids. This expansion begins at the wellbore where the reservoir pressure has dropped below the bubble point. Gas is liberated from solution and its expansion provides the main driving energy. | Petroleum Development Geology | POSC | epicentre 2.1 | current |
water drive | The energy necessary to mobilize the oil is provided from the aquifer by rock and fluid expansion and subsequent water influx into the accumulation to replace the volume of oil produced to the surface. | Petroleum Development Geology | POSC | epicentre 2.1 | current |
gravity drainage | The energy necessary to mobilize the oil is provided by the potential energy of the fluid itself. The fluid is expelled into the down flank producers. | Petroleum Development Geology | POSC | epicentre 2.1 | current |
gas cap drive | The energy necessary to mobilize the oil is provided by the pressure within the gas cap of the reservoir. In some cases this pressure may be artificially maintained by the re-injection of produced gas. | Petroleum Development Geology | POSC | epicentre 2.1 | current |
compaction | Oil is mobilized by the reduction in pore volume that results from compaction of the matrix as the supporting reservoir fluid pressure is decreased. | Petroleum Development Geology | POSC | epicentre 2.1 | current |
depletion drive | The energy necessary to mobilize the fluid is provided by the expansion of the compressed reservoir fluid and matrix itself. | Petroleum Development Geology | POSC | epicentre 2.1 | current |