Recovery of bitumen from tar sand material

Details Recovery of bitumen from tar sand material Recovery of bitumen from tar sand material

E - Fixed Constructions

21

B

196/25, 166/31

E21B 43/24 (2006.01) C09K 8/58 (2006.01) C09K 8/592 (2006.01) E21B 43/28 (2006.01)

Patent

CA 1122518

ABSTRACT The invention relates to a method for recovering bitumen from tar sand material by contacting the tar sand material with a heated aqueous fluid characterized in that said heated aqueous fluid contains an amine having the formula: R1R2NR3 wherein R1 and R2, which may be the same or different, are each hydrogen or C1 to C6 alkyl, and R3 is C3 to C20 alkyl or a group of the formula -R4NH2 wherein R4 is C2 to C18 alkylene, the total number of carbon atoms in R1, R2 and R3 being from 3 to 20. Various embodiments of the invention are described including a thermal recovery process, a hydraulic mining process, and the treatment of mined tar sand.

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