Oil recovery process using arkyl aryl polyalkoxyol sulfonate sur

Details Oil recovery process using arkyl aryl polyalkoxyol sulfonate sur Oil recovery process using arkyl aryl polyalkoxyol sulfonate sur

1988-06-10

1991-09-10

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166268, 166273, 166274, 166303, 1663051, 252 8554, E21B 4322, E21B 4324

Patent

active

050465600

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, or mixtures thereof. 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 about 6 to about 50, except that if the gas is steam n ranges from about 9 to about 50;

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