Oil recovery by surfactant-alcohol waterflooding

Details Oil recovery by surfactant-alcohol waterflooding Oil recovery by surfactant-alcohol waterflooding

E - Fixed Constructions

21

B

31/30

E21B 43/22 (2006.01) C09K 8/584 (2006.01)

Patent

CA 1184023

F-0870-L OIL RECOVERY BY SURFACTANT-ALCOHOL WATERFLOODING ABSTRACT: In a waterflooding technique for recovering oil from a subterranean formation, at least a portion of the injected water contains a preferentially oil-soluble alcohol, a sulfobetaine, a quaternary ammonium compound containing at least one long chain hydrocarbon group and a quaternary ammonium compound with short chain hydrocarbon groups, such a formulation serving both as a surfactant and a mobility control agent.

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