Surfactant-stabilized foams

Details Surfactant-stabilized foams Surfactant-stabilized foams

B - Operations, Transporting

01

F

31/14, 134/44

B01F 3/04 (2006.01) C09K 8/94 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2017517

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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