Patent ID: 9103181
Filing Date: 2015-08-11
Classification: E21B,H05B

Abstract:
1. A heater cable for a hydrocarbon drilling tubing, the heater cable comprising: at least one metallic thermo conductor duct adapted to be attached to the hydrocarbon drilling tubing the heater cable is adapted to be passed through at least one metallic thermo conductor duct, the heater cable having a flexible body including: a plurality of insulating conductors; an inner sheath wrapping the insulating conductors; a metallic band wound around said inner sheath in a helicoidal winding; a fluoropolymeric jacket surrounding said metallic band; an outer armour sheath surrounding said fluoropolymeric jacket in a helicoidal winding; and wherein successive spirals of said metallic band overlap between each other in at least 10% and 90% of a width of the metallic band.