Electrode well for electrically heating a subterranean...

E - Fixed Constructions – 21 – B

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166/38, 309/6

E21B 43/25 (2006.01) E21B 7/04 (2006.01) E21B 43/24 (2006.01)

Patent

CA 1093131

Abstract of the Disclosure An improved electrode for electrically heating a subterranean formation includes a plurality of electrically conductive rod-like members that extend outwardly from a cen- tral well bore to provide increased area for conducting elec- trical current from a source into said subterranean formation. The improved electrode apparatus is adapted to be lowered into a well bore which has been drilled into the subterranean for- mation and, thereafter, the plurality of rod-like members are driven outwardly from the central well bore. Guide means are provided to direct the rod-like members outwardly into the subterranean formation as a central member is forced downwardly.

288030

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