Polyalkoxy sulphonate, co.sub.2 and brine drive process for...

Details Polyalkoxy sulphonate, co.sub.2 and brine drive process for... Polyalkoxy sulphonate, co.sub.2 and brine drive process for...

E - Fixed Constructions

21

B

31/14

E21B 43/22 (2006.01) C09K 8/594 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1229477

A B S T R A C T POLYALKOXY SULPHONATE, CO2 AND BRINE DRIVE PROCESS FOR OIL RECOVERY Oil is displaced within a subterranean reservoir by injecting a combination of substantially liquefied CO2, brine and surfactant material into the reservoir, with the surfactant material being a polyalkoxy aliphatic sulphonate surfactant material which has specified dispersing and partitioning properties in contact with the brine and the fluids in the reservoir at the reservoir temperate and a pressure sufficient to substantially liquefy the CO2 within the reservoir.

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