Oil recovery process

Details Oil recovery process Oil recovery process

1978-02-14

1980-04-22

Guynn, Herbert B.

Wells

Processes

Distinct, separate injection and producing wells

252 855D, E21B 4322

Patent

active

041990277

ABSTRACT:
A thickener and surfactant for a driving fluid used in enhanced oil recovery comprises a salt of a sulphated polyoxyethylene alcohol in which at least 40 wt % of the alcohol portion of the sulphated polyoxyethylene alcohol is a C.sub.8 to C.sub.20 primary alcohol having a C.sub.1 to C.sub.3 alkyl substituent in the 2-position of an otherwise linear chain. The balance of the alcohol portion may be made up of a linear primary alcohol of same carbon number as the 2-alkyl branched alcohol.

REFERENCES:
patent: 3500923 (1970-03-01), Reisberg
patent: 3888308 (1975-06-01), Gale et al.
patent: 3946812 (1976-03-01), Gale et al.
patent: 4017405 (1977-04-01), Holm

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