Solvent stimulation in heavy oil wells producing a large fractio

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

1985-01-22

1985-12-24

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

E21B 4325

Patent

active

045600031

ABSTRACT:
A method for the solvent stimulation of a well producing heavy oil containing large fractions of free water by injecting a solvent into the producing well, 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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patent: 3525400 (1970-08-01), Pollock et al.
patent: 3554289 (1971-01-01), Webb
patent: 3978926 (1976-09-01), Allen

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