Method of forming carbon dioxide mixtures miscible with...

Details Method of forming carbon dioxide mixtures miscible with... Method of forming carbon dioxide mixtures miscible with...

E - Fixed Constructions

21

C

166/32

E21C 45/00 (2006.01) E21B 43/16 (2006.01) E21B 43/40 (2006.01)

Patent

CA 1217127

ABSTRACT A method is disclosed for forming a carbon dioxide-containing mixture which is miscible with crude oil. The method comprises maintaining a mixture of crude oil and carbon dioxide in an extraction zone at a temperature and pressure such that multiple phase equilibrium is achieved therebetween. A carbon dioxide-rich phase that includes a mixture of carbon dioxide and hydrocarbons is withdrawn and is miscible with the reservoir crude oil when injected into the reservoir from which the crude oil was produced.

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