A cable that has a cable core with a first armor wire layer and a second armor wire layer. The second armor wire layer is segregated from the first armor wire layer, and an outer jacket is disposed about the second armor wire layer.

High reliability power cables for subsea application are provided. Example power cables provide enhanced resistance to partial discharge dielectric breakdown as well as resistance to explosive gas decompression, by eliminating micro-defects and voids at the interface between the insulation layer and the barrier layer during the cable manufacturing process. Lead metal, which is conventionally extruded as a primary barrier layer, is replaced in the example power cables by a gas-and-fluid-resistant thermoplastic that is co-extruded or tandem extruded with surface-modified insulation to promote bonding between the two layers. Elimination of lead metal in the example power cables also significantly reduces their overall weight. The improved resistance to partial discharge and resistance to rapid gas decompression translates to lower workover and lower cost of ownership.

An optical cable can include one or more graphenic elements disposed about one or more optically transmissive fibers. A graphenic element can be a coating of graphene or amorphous graphite, a ribbon of graphene or amorphous graphite, or fibers of graphene or amorphous graphite. The graphenic element provides a path for electrical conduction while the optically transmissive fiber provides a path for optical transmission. An optical cable as disclosed herein can include a plurality of electrical and optical paths with a much smaller diameter and weight than traditional cables.

This invention relates to cable equipment, specifically, to geophysical cables, and is intended for lowering and lifting of geophysical instruments and devices, for supplying them with electric power, and for providing communication between surface equipment and instruments used during geophysical studies of horizontal and uphill portions of oil and gas wells. The geophysical cable for study of horizontal and uphill portions of wells contains at least one current-conducting core and an outside coating; at least one current-conducting core is located in a mass of polymer composite material armoured with glass or carbon fibers. The technical result of the proposed invention is to increase the longitudinal elasticity of a geophysical cable for study of horizontal and uphill portions of wells, which would ensure its self-rectification during operation, while preserving its strength and stiffness for pushing geophysical devices in horizontal portions of wells.

An umbilical for use in the offshore production of hydrocarbons, the umbilical comprising at least one electric cable, the electric cable comprising at least one electric conductor (18), and at least one electric conductor (18) comprising plurality of electric strands having interstices (15), wherein the interstices are filled with a metal-based material. In this way, there is provided an umbilical with a void-free1 or completely gap-filled conductor construction which therefore prevents water or gas migration or transport along such a conductor.

In accordance with embodiments of the present disclosure, a cable system for conveying well servicing equipment into a wellbore includes a core support structure extending longitudinally along an axis of the cable system. The core support structure comprises polymer reinforced with fibers, and the fibers are oriented substantially parallel to the axis of the cable system. The cable system also includes a mesh layer disposed around and bonded to the core support structure. The mesh layer includes metal wrapped around the core support structure. The cable system also includes a polymeric coating disposed around and bonded to the mesh layer. The mesh layer enables increased structural support of the cable system, particularly against forces in the radial direction relative to the axis of the cable system. In some applications, the mesh layer acts as a return conductive path for conductors embedded in the core support structure.

Provided is a method of manufacturing a downhole cable, the method including, forming a helical shape in an outer circumferential surface of a metal tube, the metal tube having a fiber element housed therein, and stranding a copper element in a helical space formed by the metallic tube. Also provided is a downhole cable including, a metallic tube having a helical space in an outer circumferential surface thereof, wherein the metallic tube has a fiber element housed therein, and a copper element, disposed in a helical space formed by the steel tube. Double-tube and multi-tube configurations of the downhole cable are also provided.

A power cable bundle is provided herein. The power cable bundle includes a spool having an axle, and a power cable wound there around. The power cable comprises a plurality of conductor wires, and a non-conductive, high-strength, synthetic material around the plurality of conductor wires substantially along its length. The power cable has a tensile strength of at least 2,000 MPa, and a weight that is less than 0.1 lb./ft. in air. Preferably, the power cable is at least 2,000 feet in length. A method of pumping fluids from a wellbore using an electrical submersible pump that receives electrical power through the power cable is also provided herein.

A high-power low-resistance electromechanical cable constructed of a conductor core comprising a plurality of conductors surrounded by an outer insulating jacket and with each conductor having a plurality of wires that are surrounded by an insulating jacket. The wires can be copper or other conductive wires. The insulating jacket surrounding each set of wires or each conductor can be comprised of ethylene tetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene tape, perfluoroalkoxyalkane, fluorinated ethylene propylene or a combination of materials. A first layer of a plurality of strength members is wrapped around the outer insulating jacket. A second layer of a plurality of strength members may be wrapped around the first layer of a plurality of strength members. The first and/or second layer of strength members can be made of single wires, synthetic fiber strands multi-wire strands, or rope. If either or both layers are made up of synthetic fiber, then the synthetic fibers may be surrounding and encapsulated by an additional insulating and protective layer.

The disclosure relates to a cable (100) comprising a core (102) and a plurality of reinforcing elements (107) arranged around the core (102) so as to cover the core (102), wherein each reinforcing element (107) includes at least a bundle of reinforcement fibers comprising at least one fiber and a thermoset matrix impregnating the bundle of fibers, wherein each reinforcing element (107) is individually tubed with a thermoplastic coating (112).