E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 36/04 (2006.01) H01B 7/29 (2006.01) H01B 13/14 (2006.01)
Patent
CA 2416006
A method for manufacturing an electrical cable provides an electrical cable suitable for use in heating wells. An elastomeric jacket is extruded over insulated conductors. A stainless steel plate is rolled around the jacket to form a cylindrical coiled tubing having a seam. The seam is welded, then the tubing is swaged down to a lesser diameter to cause the tubing to frictionally grip the jacket. A recess may be formed in the jacket adjacent the seam to avoid heat damage from the welding process.
Cox Don C.
Dalrymple Larry V.
Neuroth David H.
Wallace Thomson H.
Wilbourn Phillip R.
Baker Hughes Incorporated
Sim & Mcburney
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