Method and apparatus for producing tar sand deposits containing

Details Method and apparatus for producing tar sand deposits containing Method and apparatus for producing tar sand deposits containing

1990-08-23

1991-10-29

Suchfield, George A.

Wells

Processes

Electric current or electrical wave energy through earth for...

166 50, 166 60, 166245, 166272, E21B 4324, E21B 4330

Patent

active

050607260

ABSTRACT:
An apparatus and method are disclosed for producing thick tar sand deposits by preheating of thin, relatively highly conductive layers which are a small fraction of the total thickness of a tar sand deposit, with horizontal electrodes and steam stimulation. The preheating is continued until the viscosity of the tar in a thin preheated zone adjacent to the highly conductive layers is reduced sufficiently to allow steam injection into the tar sand deposit. The entire deposit is then produced by steam flooding.

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Hiebert et al., "Numerical Simulation Results for the Electrical Heating of Athabasca Oil Sand Formations," Reservoir Engineering Journal, SPE, Jan. 1986.

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