Surfactant-stabilized foams for enhanced oil recovery

Details Surfactant-stabilized foams for enhanced oil recovery Surfactant-stabilized foams for enhanced oil recovery

1990-07-03

1991-12-24

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166268, 166274, 166309, 252 8554, E21B 4322

Patent

active

050743589

ABSTRACT:
A foam is provided for use in a subterranean oil-bearing formation for reducing and controlling the mobility of a gaseous drive fluid. The foam is generated using an inert gas and a fluorocarbon surfactant solution in admixture with an amphoteric or anionic hydrocarbon surfactant solution. A relatively small amount of the fluorocarbon surfactant is operative, when mixed with the hydrocarbon surfactant and foamed, to generate a foam that has better stability when in contact with oil than a foam made with hydrocarbon surfactant alone.

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patent: 4836281 (1989-06-01), Robin et al.
patent: 4860828 (1989-08-01), Oswald et al.
patent: 4923009 (1990-05-01), Watkins

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