Foam drive oil displacement with outflow pressure cycling

Details Foam drive oil displacement with outflow pressure cycling Foam drive oil displacement with outflow pressure cycling

1984-05-10

1986-07-22

Novosad, Stephen J.

Wells

Processes

Cyclic injection then production of a single well

166268, E21B 4316

Patent

active

046013377

ABSTRACT:
Oil is recovered from a subterranean oil reservoir by injecting foam-forming components through an injection well while preventing fluid outflow from an adjacent production well, so that the pressure is increased in the zone between the wells, then permitting fluid outflow from the production well while continuing the injection, until the rate of the outflow is significantly reduced, and repeating the injecting and outflowing steps until the rate of oil production is significantly reduced.

REFERENCES:
patent: 3311167 (1967-03-01), O'Brien et al.
patent: 3376924 (1968-04-01), Felsenthal et al.
patent: 3648772 (1972-03-01), Earlougher, Jr.
patent: 3893511 (1975-07-01), Root
patent: 4488976 (1984-12-01), Dilgren et al.

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