In-situ heated annulus refining process

Details In-situ heated annulus refining process In-situ heated annulus refining process

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) C09K 8/592 (2006.01) C10G 1/06 (2006.01) E21B 43/16 (2006.01) E21B 43/30 (2006.01)

Patent

CA 2047653

Recovery of viscous petroleum such as from tar sands is assisted using a controlled flow of hot fluid and hydrogen- containing gas in a flow path within the formation; thus a solid-wall hollow tubular member in the formation is used for conducting hot fluid to promote hydrogenation in conjunction with a hydrogen-containing gas and reduce viscosity of the petroleum to develop a potential passage in the formation outside the tubular member into which a drive fluid is injected to promote movement of the petroleum to a production position.

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