Recovering oil by injecting aqueous alkali, cosurfactant and gas

Details Recovering oil by injecting aqueous alkali, cosurfactant and gas Recovering oil by injecting aqueous alkali, cosurfactant and gas

1983-07-29

1985-01-15

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 855D, E21B 4322

Patent

active

044933711

ABSTRACT:
A process of recovering oil from a subterranean reservoir in which the oil is acidic but forms monovalent cation soaps of only relatively low interfacial activity when reacted with aqueous alkaline solutions, comprises displacing the oil toward a production location with a mixture of gas and cosurfactant-containing aqueous alkaline solution.

REFERENCES:
patent: 3386506 (1968-06-01), Quance
patent: 3387655 (1968-06-01), Hurd
patent: 3927716 (1975-12-01), Burdyn et al.
patent: 3929190 (1975-12-01), Chang et al.
patent: 4004638 (1977-01-01), Burdyn et al.
patent: 4044831 (1977-08-01), Allen
patent: 4110224 (1978-08-01), Allen

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