Alkaline surfactant polymer flooding composition and process

Details Alkaline surfactant polymer flooding composition and process Alkaline surfactant polymer flooding composition and process

1997-04-04

2000-02-08

Wu, Shean C.

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

507255, 507261, 507264, 507266, 507935, 507936, 507937, 166268, 166275, E21B 4316

Patent

active

060228342

ABSTRACT:
An improved concentrated surfactant formulation and process for the recovery of residual oil from subterranean petroleum reservoirs, and more particularly an improved alkali surfactant flooding process which results in ultra-low interfacial tensions between the injected material and the residual oil, wherein the concentrated surfactant formulation is supplied at a concentration above, at, or, below its CMC, also providing in situ formation of surface active material formed from the reaction of naturally occurring organic acidic components with the injected alkali material which serves to increase the efficiency of oil recovery.

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patent: 3882938 (1975-05-01), Bernard
patent: 4856589 (1989-08-01), Kuhlman et al.
patent: 5000262 (1991-03-01), Danzik
patent: 5068043 (1991-11-01), Thigpen et al.

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