E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
309/6
E21B 43/24 (2006.01) E21B 36/04 (2006.01) E21B 43/25 (2006.01) H05B 3/44 (2006.01)
Patent
CA 1165360
14-25432M/KH/81 ABSTRACT OF THE DISCLOSURE An electrode device for electrically heating under- ground deposits of hydrocarbons in which an insulated pipe is disposed between an electrode and a main guide pipe. The two end portions of the insulated pipe are formed as flanges having outer circumferential surfaces counter tapered to diverge at a predetermined angle toward the end portions. Shock absorbers are disposed between fastening fixtures and the counter-tapered surfaces of the insulated pipe and the fastening mixtures are coupled to connectors on the main guide pipe and the electrode through bolts. If desired, the abutting surfaces of the main guide pipe and the electrode can be formed counter tapered similarly to the counter-tapered surfaces of the insulated pipe.
375337
Inoue Takeo
Kobayashi Toshiyuki
Koshirakawa Nobutaka
Nagano Toshio
Mitsubishi Denki Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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