Oil recovery by a combination of solution gas drive and waterflooding
Patent
·
OSTI ID:5825383
Primary production of oil from subterranean oil-bearing reservoirs is normally obtained by exploiting the natural energy of the reservoir in the form of water drive, gas cap drive, solution gas drive or combinations. Improved oil recovery from an oil-bearing reservoir is obtained by a combination of solution gas drive and water flooding whereby the reservoir is produced by solution gas drive until the pressure of the reservoir is reduced below the bubble point pressure. A critical gas saturation is established and thereafter the reservoir is produced by a waterflood until the rate of oil production reaches a predetermined value or termination point, whereafter the cycle is repeated. (4 claims)
- Assignee:
- Texaco Inc.
- Patent Number(s):
- US 3580335
- OSTI ID:
- 5825383
- Country of Publication:
- United States
- Language:
- English
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