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 3/03 (2006.01) H05B 3/44 (2006.01)
Patent
CA 1165361
14-25811M/KH/81 ABSTRACT OF THE DISCLOSURE An electrode unit for electrically heating undergound hydrocarbon deposits having a main conduit pipe assembly, a cylindrical water pipe and an electrical conductor arranged co- axially with the electrical conductor disposed between the water pipe and the main conduit pipe assembly. The spaces between the main conduit pipe assembly and the cylindrical water pipe are filled with a solid insulating material, wherein it is not neces- sary to recirculate cooling oil through the assembly. Connectors are disposed for joining ends of adjacent main conduit pipe as- semblies, ends of adjacent water pipes and electrical conductors. Preferably, the electrical conductor is made of a material such as a metal mesh which can stretch longitudinally.
378650
Mitsubishi Denki Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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