Hydrocarbon recovery

Details Hydrocarbon recovery Hydrocarbon recovery

E - Fixed Constructions

21

B

166/31

E21B 43/00 (2006.01) E21B 43/16 (2006.01)

Patent

CA 1059432

Abstract of the Disclosure The viscosity of heavy hydrocarbons in oil sand is substantially reduced by disolving solvent gases, e.g. CO2 and ethane, in the hydrocarbons at the ambient temperature and at pressures above, equal to or slightly less than the liquefaction pressure of the solvent gas. This allows removal of the hydro- carbons from an oil sand deposit under the action of a driving force such as gravity, differential gas pressure, or a displacement medium e.g. water.

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