Enhanced oil recovery process with reduced gas drive mobility

Details Enhanced oil recovery process with reduced gas drive mobility Enhanced oil recovery process with reduced gas drive mobility

1987-03-24

1988-09-27

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166273, 166275, 252 8554, E21G 4322

Patent

active

047734841

ABSTRACT:
A process for recovering crude oil from a subterranean formation comprising injecting into the formation a liquid solution consisting essentially of at least one surfactant such as alkyl toluene sulfonate in an aqueous medium and injecting a gas to displace the movable oil effectively toward a production well. The process is advantageous in formations where temperatures preclude effective oil recovery using micellar/polymer chemical floods.

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