Method of in-situ recovery of viscous oils or bitumen...

Details Method of in-situ recovery of viscous oils or bitumen... Method of in-situ recovery of viscous oils or bitumen...

E - Fixed Constructions

21

B

166/33

E21B 43/24 (2006.01)

Patent

CA 1129336

METHOD OF IN-SITU RECOVERY OF VISCOUS OILS OR BITUMEN UTILIZING A THERMAL RECOVERY FLUID AND CARBON DIOXIDE (D#73,500-RCA-41-F) ABSTRACT OF THE DISCLOSURE A method for the in-situ recovery of viscous oils or bitumen from subterranean oil-bearing formations by the injection of steam or a mixture of steam and an oxygen- containing gas under operating conditions that utilize pressurization and drawdown cycles wherein carbon dioxide is injected at the start of the pressurization cycle. -I-

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