oil racovery difintion

1. Primary Oil Recovery: Point to be
considered
• Optimum Production Rate
• Maximum Recovery Factor
• Pressure decline under control
• Gas Injection
• Water Injection
• Production under stabilized conditions
• Monitoring WOR & GOR
• Reservoir Management
Secondary Recovery 15 TO 60%
To produce more oil, the pressure in the reservoir must
be maintained by injecting another fluid.
- Water injection
- Gas injection
• Small oil field:
- Water into the aquifer
- Gas into the gas cap
• Large field: Fluid injection must be distributed through
the reservoir
Tertiary Recovery
• Producing the oil that remain in the part of the reservoir
already swept by the displacing.
• A) Increasing the displacement efficiency
(Part of the reservoir that was already swept in secondary recovery)
• B) Increasing the sweep efficiency
(producing oil that remains in the part of the reservoir not swept by displacing fluid)
• C) Increasing both displacement and sweep efficiencies