Surfactant waterflooding employing amphoteric sulfonium sulfonat

Details Surfactant waterflooding employing amphoteric sulfonium sulfonat Surfactant waterflooding employing amphoteric sulfonium sulfonat

1977-12-29

1979-08-28

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 166275, E21B 4322

Patent

active

041660382

ABSTRACT:
Waterflood process for the recovery of oil from a subterranean oil reservoir involving injecting into the reservoir an aqueous solution of an amphoteric surfactant having an inner sulfonium group linked to a terminal sulfonate group. The amphoteric sulfonium sulfonate may be employed in relatively low concentrations within the range of 0.001-0.1 weight percent and injected in an aqueous slug of at least 0.5 pore volume. The invention may be applied in situations in which the reservoir waters and/or the waters employed in formulating the surfactant solution contain relatively high amounts of divalent metal ions. Specifically disclosed sulfonium sulfonates include dodecylmethylsulfonium propane sulfonate, tetradecylmethylsulfonium propane sulfonate, and hexadecylhydroxyethylsulfonium propane sulfonate.

REFERENCES:
patent: 2813898 (1957-11-01), Gaertner
patent: 3390094 (1966-06-01), Diehl et al.
patent: 3469630 (1969-09-01), Hurd et al.
patent: 3939911 (1976-02-01), Maddox et al.
patent: 3977471 (1976-08-01), Gale et al.
patent: 4076743 (1978-02-01), Koch et al.

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