Solvent stimulation in heavy oil wells producing a large...

Details Solvent stimulation in heavy oil wells producing a large... Solvent stimulation in heavy oil wells producing a large...

E - Fixed Constructions

21

B

166/29

E21B 43/28 (2006.01)

Patent

CA 1205007

SOLVENT STIMULATION IN HEAVY OIL WELLS PRODUCING A LARGE FRACTION OF WATER ABSTRACT A method for the solvent stimulation of a well producing heavy oil containing large fractions of free water comprises injecting into the producing well a solvent having a density and viscosity substantially less than the viscous formation oil and a viscosity equal to or slightly greater than water at formation conditions, shutting-in the producing well to allow a soak period, and returning the well to production with substantially less water production than prior to stimulation.

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