E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/38, 309/6
E21B 43/14 (2006.01) E21B 17/00 (2006.01) E21B 36/04 (2006.01) F16L 9/147 (2006.01) F16L 25/01 (2006.01)
Patent
CA 1205008
ABSTRACT: An electrode supporting conduit tubes for electrical heating of underground hydrocarbon resources comprises a metal conduit tube; and an insulative covering adhered or and around the outer peripheral surface of the metal conduit tube, the insulative covering being a laminated body of polyether/ether/ketone resin and glass fiber, which is obtained by confining both polyether/ether/ketone resin and glass fiber wound on and around the metal conduit tube within a metal mold and subjecting the laminated materials to shaping under heat and pressure at a heating temperature of from 350°C to 450°C and a pressure of from 10 to 200 kg/cm2.
447530
Okahashi Kazuo
Okamoto Goro
Takahashi Ichiro
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
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