A shielded conductor that prevents electrical corrosion from occurring in braided wires and a shield pipe. Separate from a shield pipe that is made of aluminium, a sub pipe that is tin-plated is provided, and an end-portion braided member that is tin-plated is connected to the sub pipe. The shield pipe and the sub pipe are connected by a braided relay member, and the connection portions between the pipes and the braided relay member are accommodated in a grommet in a state of being sealed. A rubber stopper for sealing a space between the sub pipe and the electrical wires (W) is fitted into the sub pipe.

A shielded conductor that prevents electrical corrosion from occurring in braided wires and a shield pipe. Separate from a shield pipe that is made of aluminium, a sub pipe that is tin-plated is provided, and an end-portion braided member that is tin-plated is connected to the sub pipe. The shield pipe and the sub pipe are connected by a braided relay member, and the connection portions between the pipes and the braided relay member are accommodated in a grommet in a state of being sealed. A rubber stopper for sealing a space between the sub pipe and the electrical wires (W) is fitted into the sub pipe.

An electric cable for powering a downhole tool in a wellbore. The electric cable includes a core including one or more electrically conductive wires and one or more electric insulating layers surrounding the conductive wires; a metal inner tube surrounding the core, where the metal inner tubing and the core includes one or more undulated segments with one or more curved outer extensions projecting outwards from a longitudinal axis of the electric cable; and an outer encapsulating tube surrounding the core and metal inner tube, where the outer surface of the metal inner tube has outermost portions at the curved outer extensions of the undulated segments that touch an inner surface of the outer encapsulating tube. A well system including the electric cable and a method of assembling the electric cable are also disclosed.

Process for manufacturing a power cable includes: providing a power cable core having an electric conductor; providing a copper foil; providing a protective strip over the power cable core, the protective strip having a radially inner and outer surface and being made of copper with a coating; folding the copper foil around the power cable core so as to bring two longitudinal copper foil rims to contact one to the other; welding the two contacted longitudinal copper foil rims thus obtaining a copper sheath in form of a tube with a welding seam; reducing the diameter of the copper sheath to put it into direct contact with the power cable core and the protective strip; heating the protective strip and the copper sheath at a temperature higher than the melting temperature of the coating of the strip so that the coating fuses in the welding seam.

Process for manufacturing a power cable includes: providing a power cable core having an electric conductor; providing a copper foil; providing a protective strip over the power cable core, the protective strip having a radially inner and outer surface and being made of copper with a coating; folding the copper foil around the power cable core so as to bring two longitudinal copper foil rims to contact one to the other; welding the two contacted longitudinal copper foil rims thus obtaining a copper sheath in form of a tube with a welding seam; reducing the diameter of the copper sheath to put it into direct contact with the power cable core and the protective strip; heating the protective strip and the copper sheath at a temperature higher than the melting temperature of the coating of the strip so that the coating fuses in the welding seam.

Provided is a device for processing an antistress cone of a main insulation layer of a cable. The device includes a support, a clamping unit, a cutting unit and an infeed unit. The clamping unit is mounted on the support and configured to clamp a cable. The cutting unit is slidably disposed on the support, capable of cutting the cable in the radial direction of the cable, and capable of performing feeding in the radial direction of the cable to adjust the cutting depth. The infeed unit is connected to and capable of driving the cutting unit and configured to drive the cutting unit to slide in the axial direction of the cable so that the cutting unit performs feeding and cutting in the axial direction of the cable.

Provided is a device for processing an antistress cone of a main insulation layer of a cable. The device includes a support, a clamping unit, a cutting unit and an infeed unit. The clamping unit is mounted on the support and configured to clamp a cable. The cutting unit is slidably disposed on the support, capable of cutting the cable in the radial direction of the cable, and capable of performing feeding in the radial direction of the cable to adjust the cutting depth. The infeed unit is connected to and capable of driving the cutting unit and configured to drive the cutting unit to slide in the axial direction of the cable so that the cutting unit performs feeding and cutting in the axial direction of the cable.

A wire harness including: a plurality of electric wires; a cylindrical protective tube that collectively houses the plurality of electric wires; a restricting member that is provided within the protective tube and includes a housing space through which the plurality of electric wires are passed and that is shaped and sized to restrict an arrangement direction of the plurality of electric wires to a specific direction; a plurality of grooves that are formed in an inner circumferential surface of the protective tube at a predetermined spacing in a circumferential direction of the protective tube; and a protrusion that is formed on an outer circumferential surface of the restricting member and is fitted into one groove of the plurality of grooves.

A wire harness including: a plurality of electric wires; a cylindrical protective tube that collectively houses the plurality of electric wires; a restricting member that is provided within the protective tube and includes a housing space through which the plurality of electric wires are passed and that is shaped and sized to restrict an arrangement direction of the plurality of electric wires to a specific direction; a plurality of grooves that are formed in an inner circumferential surface of the protective tube at a predetermined spacing in a circumferential direction of the protective tube; and a protrusion that is formed on an outer circumferential surface of the restricting member and is fitted into one groove of the plurality of grooves.

A wire harness including: an electrical wire including a core wire and an insulating cover that covers an outer circumference of the core wire; a pipe that covers the electrical wire; and a holder that holds the electrical wire and is fixed to an end of the pipe in a length direction, wherein: the insulating cover includes a recess formed in an outer circumferential surface of the electrical wire, and the holder includes a catch that restricts movement of the electrical wire in a length direction of the electrical wire relative to the holder by the catch fitting into the recess.