Power cable for high temperature environments

Patent metadata

Field	Value
Publication number	US-9564256-B2
Application number	US-201113330439-A
Country	US
Kind code	B2
Filing date	Dec 19, 2011
Priority date	Dec 11, 2008
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

An electrical power cable for high temperature environments comprises two or more sheathed conductors; each sheathed conductor comprising an electrical conductor, an electrical insulator surrounding the electrical conductor, and a sheath surrounding the electrical insulator; and a bonding material interconnecting the sheaths of the two or more sheathed conductors positioned adjacent to one another to form a cable.

First claim

What is claimed is:

1. An electrical power cable for high temperature environments, the power cable comprising:
three sheathed conductors, each sheathed conductor comprising an electrical conductor, an electrical insulator surrounding the electrical conductor, and a sheath surrounding the electrical insulator, wherein the sheathed conductors are arranged in a non-planar configuration such that each sheathed conductor contacts at least one other sheathed conductor; and
a plurality of beads formed by welding or adhesive material, the plurality of beads being located for interconnecting the sheaths of the three sheathed conductors to form a non-planar shaped cable without an outer armor layer.

2. The power cable of claim 1 , wherein the electrical insulator is constructed of a material that provides electric insulation when deployed in a temperature of at least 500 degrees Fahrenheit.

3. The power cable of claim 1 , wherein the electrical insulator comprises at least two layers of dielectric material.

4. The power cable of claim 1 , wherein the at least two layers of dielectric material are formed of different dielectric materials.

5. The power cable of claim 1 , wherein the electrical insulator is formed of a fluoropolymer selected from the group consisting of polytetrafluoroethylene, polytetrafluoroethene, fluorinated ethylene propylene, and perfluoroalkoxy.

6. The power cable of claim 1 , wherein the electrical insulator comprises an insulator layer formed of a polyimide material and an insulator layer formed of a fluoropolymer material.

7. A wellbore installation comprising:
an electric submersible pump (ESP) deployed in the wellbore; and
a power cable extending between the ESP and a distal electric power source, the power cable comprising:
three sheathed conductors, each sheathed conductor comprising an electrical conductor, an electrical insulator surrounding the electrical conductor, and a sheath surrounding the electrical insulator, wherein the sheathed conductors are arranged in a non-planar configuration such that each sheathed conductor contacts at least one other sheathed conductor; and
a plurality of beads formed by welding or adhesive material, the plurality of beads being located for interconnecting the sheaths of the three sheathed conductors to form a non-planar shaped cable.

8. The wellbore installation of claim 7 , wherein the electrical insulator is constructed of a material that provides electric insulation when deployed in a temperature of at least 500 degrees Fahrenheit.

9. The wellbore installation of claim 7 , wherein the electrical insulator comprises at least two layers of dielectric material.

10. The wellbore installation of claim 7 , wherein the at least two layers of dielectric material are formed of different dielectric materials.

11. The wellbore installation of claim 7 , wherein the electrical insulator is formed of one of a polyimide or a fluoropolymer.

12. An electric submersible pump (ESP) system, the system comprising:
a pump;
an electric motor connected to the pump; and
an electrical power cable connected between the motor and a distal electric power source, the power cable comprising:
a plurality of sheathed conductors, each sheathed conductor comprising an electrical conductor, an electrical insulator surrounding the electrical conductor, and a sheath surrounding the electrical insulator, wherein the sheathed conductors are arranged in a non-planar configuration such that each sheathed conductor contacts at least one other sheathed conductor; and
a plurality of beads formed by welding or adhesive material, the plurality of beads being located for interconnecting the sheaths of the sheathed conductors to form a non-planar shaped cable without an outer armor layer.

13. The electric submersible pump (ESP) system of claim 12 , wherein the electrical insulator is formed of a fluoropolymer selected from the group consisting of polytetrafluoroethylene, polytetrafluoroethene, fluorinated ethylene propylene, and perfluoroalkoxy.

14. The electric submersible pump (ESP) system of claim 12 , wherein the electrical insulator comprises an insulator layer formed of a polyimide material and an insulator layer formed of a fluoropolymer.

15. The electric submersible pump (ESP) system of claim 12 , wherein the electrical insulator is constructed of a material that provides electric insulation when deployed in a temperature of at least 500 degrees Fahrenheit.

Assignees

• Manke Gregory H
• Metzger Mark
• Ver Meer Melissa
• Lespreance Tricia
• Costa Wayne
• Hozmueller Jason
• Schlumberger Technology Corp

Inventors

• Manke Gregory H
• Metzger Mark
• Ver Meer Melissa
• Lespreance Tricia
• Costa Wayne
• Hozmueller Jason

Classifications

• H01B7/046

  attached to objects sunk in bore holes, e.g. well drilling means, well pumps · CPC title

• H01B3/445

  from vinylfluorides or other fluoroethylenic compounds · CPC title

• H01B7/292 Primary

  using material resistant to heat · CPC title

• F04B47/06

  having motor-pump units situated at great depth · CPC title

• H01B3/306

  Polyimides or polyesterimides · CPC title