A downhole power cable

摘要

The power cable has at least one conductor 56. An adhesively-bonded polyimide tape insulation layer 64 is wrapped about the conductor 56. A fluoropolymer tape layer 76 is wrapped over the polyimide insulation layer. The fluoropolymer tape layer is then processed into a uniform, bonded layer, preferably by sintering. Additional cable layers 78-84 may be employed to help provide protection in the harsh downhole environment.