Reservoir-tailored co.sub.2-aided oil recovery process

Details Reservoir-tailored co.sub.2-aided oil recovery process Reservoir-tailored co.sub.2-aided oil recovery process

E - Fixed Constructions

21

B

166/33

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

Patent

CA 1174965

A B S T R A C T RESERVOIR-TAILORED CO2-AIDED OIL RECOVERY PROCESS An oil recovery process that utilizes an injection of CO2, surfactant and water is improved by using a selected polyalkoxylated alcoholic or phenolic surfactant which is capable of forming three particular types of dispersions with the fluids in the reservoir at the reservoir conditions which are maintained during the process.

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