Recovery of heavy oil

Details Recovery of heavy oil Recovery of heavy oil

E - Fixed Constructions

21

B

166/29

E21B 43/28 (2006.01) C10C 3/00 (2006.01) C10G 1/00 (2006.01) C10G 1/04 (2006.01)

Patent

CA 1300000

ABSTRACT OF THE DISCLOSURE RECOVERY OF HEAVY OIL A two stage method for the recover of heavy crude oil or bitumen associated with a solid inorganic substance and water from an underground deposit comprises chemically conditioning the deposit in situ with an aqueous solution of an alkaline compound and subsequently treating the conditioned deposit to recover the heavy crude oil or bitumen from it. The method is particularly suitable for recovering bitumam from tar sand. In situ conditioning increases the yield of product.

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