Surfactant waterflooding in a high brine environment

Details Surfactant waterflooding in a high brine environment Surfactant waterflooding in a high brine environment

E - Fixed Constructions

21

B

31/13, 166/31

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

Patent

CA 1168847

ABSTRACT OF THE DISCLOSURE An improved recovery process is provided for fluent petroleum in a porous formation having spaced injection means and production well recovery means which includes a concentrated brine drive and surfactant carrier system. Advantageously, an effective aqueous surfactant composition is formulated containing a water-soluble ether-linked sulfonate surfactant, a cosolvent alcohol, and at least one cosurfactant (as for example, petroleum sulfonate or alkylbenzene sulfonate) or sacrificial sulfonate material in a concentrated brine carrier.

383316

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