Electrode device for electrically heating underground...

Details Electrode device for electrically heating underground... Electrode device for electrically heating underground...

H - Electricity

05

B

309/6

H05B 3/03 (2006.01) H05B 3/46 (2006.01)

Patent

CA 1168283

M14-25429M/KH/81 ABSTRACT OF THE DISCLOSURE An electrode device for electrically heating underground deposits of hydrocarbons such as oil sand or oil shale. Plural well pipe sections are joined through insulated pipe joints with an electrode connected through one of the insulated pipe joints to a lower one of the pipe sections. Each of the insulated pipe joints includes a first tubular member having a flange portion at one end thereof, a second tubular member having a cap portion at one end which is received in the flange portion of the first tubular member with a gap therebetween, and an insulating member disposed in the gap for hermetically coupling the first and second tubular members and for electrically insulating first and second tubular members from one another.

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