Method for concentrating surfactant from a brine solution

Details Method for concentrating surfactant from a brine solution Method for concentrating surfactant from a brine solution

C - Chemistry, Metallurgy

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C02F 1/56 (2006.01) B01D 12/00 (2006.01) B01D 17/04 (2006.01) B01F 17/00 (2006.01) C09K 8/584 (2006.01) C12P 19/06 (2006.01) E21B 43/40 (2006.01)

Patent

CA 1284693

Abstract A method is disclosed for concentrating surfactant in an aqueous solution. The method comprises adding to the solution a component incompatible with the surfactant, such as a water-soluble polymer, thereby displacing the surfactant from the aqueous phase of the solution. The component remains in the aqueous phase and the surfactant goes into a surfactant- rich phase. The surfactant-rich phase can then be separated from the aqueous phase by conventional separation devices or techniques. This method is particularly applicable to concen- trating surfactant recovered from a reservoir following an enhanced oil recovery process employing surfactant. The method may be practiced in the field or off-site.

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