A data cable assembly includes at least one pair of conductors twisted about one another, optionally disposed along an outer surface of a pair separator. The conductors are covered by an inner jacket, and an armor disposed on the outer surface of the inner jacket. The inner jacket is covered by an outer jacket with a rip cord disposed between the armor and the outer jacket.

A method of manufacturing hybrid cable applicable in oil wells provides an FIMT, a conductor layer formed by continuous laser welding and cylindrically covered the outer surface of the FIMT, the outer cylindrical surface of the conductor layer being covered with a high temperature resistant insulating layer by a continuous extrusion method or by wrapped helically with insulating tapes around the outer surface of the conductor layer and the external steel tube cylindrically covered the outer surface of the insulating layer. The conductor layer is coaxial with the FIMT, the inner space of the hybrid cable to accommodating excess length of the optical fiber to allow for thermal expansions and tensile stress on the optical cable. The thickness of the insulating layer cylindrically covering the outer surface of the conductor layer is able to be increased, improving the insulating property.

A shielded conductive path, including: a cylindrical shielding pipe that is in a state in which two semi-cylindrical members made of a metal material are joined together, and that is provided with a bend at a portion located in an axial direction; an electrical wire housed in the shielding pipe; and a weld that is provided only in a partial region of the shielding pipe that includes at least the bend in the axial direction, the weld joining the two semi-cylindrical members.

A shielded conductive path, including: a cylindrical shielding pipe that is in a state in which two semi-cylindrical members made of a metal material are joined together, and that is provided with a bend at a portion located in an axial direction; an electrical wire housed in the shielding pipe; and a weld that is provided only in a partial region of the shielding pipe that includes at least the bend in the axial direction, the weld joining the two semi-cylindrical members.

An anchoring assembly for securing a cable having both an optical fiber and an electrical conductor in order to provide a conductive pathway to a downhole tool. The anchoring assembly has a head and tail each having a throughbore with anchor receiving portions. An anchor with a deformable portion maybe inserted into the anchor receiving portions and the head and tail drawn together about the anchor. The anchor receiving portions have a narrowing diameter, which, upon abutment with the anchor causes the deformable portion of the anchor to deflect inward and secure a cable inserted therein. A conductive body is provided in the head or tail for coupling with the cable and providing a conductive pathway to a downhole tool.

An anchoring assembly for securing a cable having both an optical fiber and an electrical conductor in order to provide a conductive pathway to a downhole tool. The anchoring assembly has a head and tail each having a throughbore with anchor receiving portions. An anchor with a deformable portion maybe inserted into the anchor receiving portions and the head and tail drawn together about the anchor. The anchor receiving portions have a narrowing diameter, which, upon abutment with the anchor causes the deformable portion of the anchor to deflect inward and secure a cable inserted therein. A conductive body is provided in the head or tail for coupling with the cable and providing a conductive pathway to a downhole tool.

A shielded conductive path, including: a cylindrical shielding pipe that is in a state in which two semi-cylindrical members made of a metal material are joined together, and that is provided with a bend at a portion located in an axial direction; an electrical wire housed in the shielding pipe; and a weld that is provided only in a partial region of the shielding pipe that includes at least the bend in the axial direction, the weld joining the two semi-cylindrical members.

A shielded conductive path, including: a cylindrical shielding pipe that is in a state in which two semi-cylindrical members made of a metal material are joined together, and that is provided with a bend at a portion located in an axial direction; an electrical wire housed in the shielding pipe; and a weld that is provided only in a partial region of the shielding pipe that includes at least the bend in the axial direction, the weld joining the two semi-cylindrical members.

A cable connecting structure includes three three-phase power cable pairs respectively including a pair of power cables that are mutually connected, three insulating rubber connecting tubes covering connecting sections of the three three-phase power cable pairs, respectively, a steel pipe accommodating portions of each of the three three-phase power cable pairs, and the three rubber connecting tubes, and a heat dissipation material. The heat dissipation material is provided between the steel pipe and each of the three rubber connecting tubes, and makes contact with the steel pipe and each of the three rubber connecting tubes. The heat dissipation material includes a heat dissipating metal that has a melting point lower than a melting point of the steel pipe.

A wire harness includes a plurality of electric wires, a plurality of flexible and conductive tubular individual shields individually covering and electromagnetically shielding the plurality of electric wires, a flexible and conductive tubular collective shield collectively covering and electromagnetically shielding at least portions of the plurality of electric wires that are not covered by the individual shields, and a connector configured to electrically connect the collective shield and the plurality of individual shields to each other in a state in which the collective shield and the plurality of individual shields overlap each other.