Oil recovery process using alkyl hydroxyaromatic dianionic surfa

Details Oil recovery process using alkyl hydroxyaromatic dianionic surfa Oil recovery process using alkyl hydroxyaromatic dianionic surfa

1988-12-07

1989-05-09

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166273, 166274, 166303, 1663051, 166309, 252 8554, E21B 4322, E21B 4324

Patent

active

048280321

ABSTRACT:
A method for recovering oil from a subterranean formation is disclosed wherein an aqueous surfactant solution is injected into the formation to reduce the mobility of gas in a gas-flooding process. The gas may include hydrocarbon gas, inert gas, carbon dioxide, and steam. The surfactant is represented by the general formula ##STR1## where R is a linear or branched chain alkyl group with n carbon atoms wherein n ranges from 0 to about 18, except that if the gas is steam n ranges from about 9 to about 30;

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