Solvent stimulation of heavy oil reservoirs

Details Solvent stimulation of heavy oil reservoirs Solvent stimulation of heavy oil reservoirs

E - Fixed Constructions

21

B

166/31

E21B 43/28 (2006.01)

Patent

CA 1208539

SOLVENT STIMULATION OF HEAVY OIL RESERVOIRS ABSTRACT OF THE DISCLOSURE This invention provides a method for cyclic solvent stimulation of production of heavy oil from an underground reservoir penetrated by a well which comprises: (a) injecting into the reservoir a solvent in an amount between .79 and 4.0 m3 per meter of oil-bearing formation (5 barrels and 25 barrels per foot); (b) letting the reservoir stand for a soak time of between less than one hour and 48 hours; and (c) producing a solvent-oil mixture.

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