Producing hydrocarbon material from a layer of oil sand

Details Producing hydrocarbon material from a layer of oil sand Producing hydrocarbon material from a layer of oil sand

E - Fixed Constructions

21

B

E21B 43/29 (2006.01)

Patent

CA 2744024

A method of producing hydrocarbon material from a layer of oil sand located in an earth formation, the layer of oil sand having a thickness and extending in an extension direction for more than its thickness, the method comprising creating a borehole arrangement in the earth formation, including an injection borehole having an injection borehole section extending in an injection borehole direction, and a discharge borehole having a discharge borehole section extending in a discharge borehole direction below the injection borehole section, wherein both the injection and the discharge borehole directions are deviating less than 45 degrees from the extension direction; creating a cavity in the layer of oil sand, the cavity being in fluid communication with both the injection and the discharge borehole sections; extending the cavity by operating fluid jetting means via the injection borehole to jet a stream of fluid against a wall of the cavity, to obtain a slurry comprising fluid, hydrocarbon material, and sand; and withdrawing the slurry from the cavity via the discharge borehole to a processing facility for processing the slurry.

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