Enhanced oil recovery

Details Enhanced oil recovery Enhanced oil recovery

1981-06-18

1983-11-08

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 166275, 260505A, E21B 4322

Patent

active

044141203

ABSTRACT:
Petroleum may be recovered from subterranean reservoirs containing oil in an enhanced oil recovery process by utilizing an aqueous surfactant slug comprising a mixture of a neutralized sulfonate salt of an alkylated gas oil, said gas oil having been obtained from the thermal cracking of coal, a lower alkyl alcohol containing from about 3 to about 6 carbon atoms and a non-ionic surfactant comprising an ethoxylated alcohol containing from about 12 to about 15 carbon atoms. The surfactant slug will provide a low interfacial tension against the oil.

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