Steam recovery processes employing stable forms of alkylaromatic

Details Steam recovery processes employing stable forms of alkylaromatic Steam recovery processes employing stable forms of alkylaromatic

1986-02-24

1987-07-28

Suchfield, George A.

Wells

Processes

Heating, cooling or insulating

252 8554, E21B 4322, E21B 4324

Patent

active

046826530

ABSTRACT:
Alkylaromatic sulfonates, and particularly dialkylaromatic sulfonates, useful as surfactants in steam recovery methods for enhancing oil recovery from subterranean formations, have been found to comprise mixtures of meta- and para-isomers of the same obtained by alkylating alkylaromatics, where the alkyl group has from 1 to 4 carbon atoms, with a C.sub.14-30 olefin. It has been found that when the ratio of para-isomer to meta-isomer is increased in this mixture, a significantly more hydrolytically, thermally stable surfactant under steam recovery operating conditions is obtained.

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