In-situ bitumen recovery from oil sands

Details In-situ bitumen recovery from oil sands In-situ bitumen recovery from oil sands

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) E21B 43/26 (2006.01) E21B 43/30 (2006.01)

Patent

CA 2108723

ABSTRACT OF THE DISCLOSURE Bitumen is recovered from subterranean oil sand formations by forming a generally horizontal production well or gallery in the formation and causing bitumen to flow by gravity from the formation into the production well, generally by heating bitumen in the formation using steam. Bitumen in the production well is emulsified using a dilute aqueous solution of sodium hydroxide and the emulsion is transported to the surface or to another remote location for recovery of bitumen from the emulsion at the remote location.

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