Enhanced hydrocarbon recovery by steam injection of oil sand...

Details Enhanced hydrocarbon recovery by steam injection of oil sand... Enhanced hydrocarbon recovery by steam injection of oil sand...

2011-01-18

2011-01-18

Bates, Zakiya W (Department: 3676)

Wells

Processes

Heating, cooling or insulating

C166S062000, C166S308200

Reexamination Certificate

active

07870904

ABSTRACT:
A method and apparatus for enhanced recovery of petroleum fluids from the subsurface by injection of a steam and hydrocarbon vaporized solvent in contact with the oil sand formation and the heavy oil and bitumen in situ. Multiple propped hydraulic fractures are constructed from the well bore into the oil sand formation and filled with a highly permeable proppant. Steam, a hydrocarbon solvent, and a non-condensing diluent gas are injected into the propped fractures, and flows upwards and outwards to contact and heat the in situ bitumen, which softens and flows by gravity to the well bore, and is pumped to the surface where the solvent can be recycled for further injection.

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