Reservoir treatment by injecting mixture of co2 and...

Details Reservoir treatment by injecting mixture of co2 and... Reservoir treatment by injecting mixture of co2 and...

E - Fixed Constructions

21

B

166/31

E21B 43/18 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1048404

RESERVOIR TREATMENT BY INJECTING MIXTURE OF CO2 AND HYDROCARBON GAS Abstract of the Disclosure A process is provided in which hydrocarbon gas containing CO2 is injected into an oil containing reservoir as an aid in recovering oil from the reservoir. Oil can be produced from at least one production well in said reservoir while hydrocarbon gas containing less CO2 than the injected mixture of hydrocarbon gas and CO2 can be recovered from production wells other than the oil producing well. Backflowing of the injection well produces a gas containing more CO2 than the gas originally injected. The method provides an in situ separation of CO2 from hydrocarbon gas.

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