Method and apparatus for maintaining electric cable inside...

Details Method and apparatus for maintaining electric cable inside... Method and apparatus for maintaining electric cable inside...

E - Fixed Constructions

21

B

166/3

E21B 7/00 (2006.01) E21B 17/00 (2006.01) E21B 23/14 (2006.01) E21B 47/12 (2006.01)

Patent

CA 1073807

ABSTRACT OF THE DISCLOSURE An insulated electric conductor employed in a tubular drill string to transmit electric energy between subsurface and surface locations is arranged within the drill string in a convoluted configuration to provide an excess length of conductor. The convoluted conductor is prevented from en- tangling during drilling by rotation limiting assemblies mounted in the drill string over a selected interval.

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