Reservoir preflushing process for increasing the rate of surfact

Details Reservoir preflushing process for increasing the rate of surfact Reservoir preflushing process for increasing the rate of surfact

1985-02-26

1986-07-01

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166273, 166274, 166303, E21B 4322, E21B 4324

Patent

active

045974420

ABSTRACT:
In a process in which steam and steam-foaming surfactant are injected into a subterranean reservoir having significant cation-exchange capacity, the rate of transport of the steam-foaming surfactant is increased by a prior injection of an aqueous liquid solution of surfactant and monovalent cation salt.

REFERENCES:
patent: 3087539 (1963-04-01), Maurer, Jr.
patent: 3369602 (1968-02-01), Fallgatter et al.
patent: 3437141 (1969-04-01), Brandner et al.
patent: 4074755 (1978-02-01), Hill et al.
patent: 4086964 (1978-05-01), Dilgren et al.
patent: 4129182 (1978-12-01), Dabbous
patent: 4274488 (1981-06-01), Hedges et al.
patent: 4393937 (1983-07-01), Dilgren et al.
patent: 4532993 (1985-08-01), Dilgren et al.

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