Production of heavy oil from tar sands

Details Production of heavy oil from tar sands Production of heavy oil from tar sands

E - Fixed Constructions

21

B

166/36

E21B 43/24 (2006.01) E21B 36/02 (2006.01) E21B 43/16 (2006.01) E21B 43/40 (2006.01)

Patent

CA 1163551

F-0697 PRODUCTION OF HEAVY OIL FROM TAR SANDS ABSTRACT OF THE DISCLOSURE An enhanced recovery process in which liquid sulfur is burned in an oxygen-containing gas underground to form SO2. The SO2 may itself act as a drive fluid for the recovery of oil or it may react with limestone in the formation to form CO2, an alternate drive fluid. 3760N

382475

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