Staged preformed-surfactant-optimized aqueous alkaline flood

Details Staged preformed-surfactant-optimized aqueous alkaline flood Staged preformed-surfactant-optimized aqueous alkaline flood

1983-11-07

1985-03-05

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166270, 252 855D, E21B 4322

Patent

active

045025410

ABSTRACT:
Oil is recovered from an acidic oil reservoir by injecting an alkaline, saline, aqueous solution containing proportions of preformed cosurfactant which are decreased as increasing amounts of the solution are injected.

REFERENCES:
patent: 3493051 (1970-02-01), Gogarty
patent: 3599716 (1971-08-01), Thompson
patent: 3637018 (1972-01-01), Kelly et al.
patent: 3927716 (1975-12-01), Burdyn et al.
patent: 3952803 (1976-04-01), Kerfoot et al.
patent: 3977470 (1976-08-01), Chang
patent: 4008769 (1977-02-01), Chang
patent: 4232737 (1980-11-01), Tyler et al.
patent: 4274488 (1981-06-01), Hedges et al.
patent: 4433730 (1984-02-01), Trushenski

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