Cable for down hole pump

Patent metadata

Field	Value
Publication number	US-9734936-B2
Application number	US-201414506814-A
Country	US
Kind code	B2
Filing date	Oct 6, 2014
Priority date	Nov 18, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A cable is provided for suspending a down hole pump that has a core with at least one tube for the transport of fluid and at least one conductor covered with an insulation layer made of a high temperature resistant insulating material. The core is covered by a steel tape and a first layer of steel wires are positioned radially outside the steel tape in contact with the steel tape. The wires of the first layer of steel wires are positioned side by side around the core with no filler in between the steel wires and an outer layer made of heat resistant polymer covers the steel wires.

First claim

The invention claimed is:

1. A cable for suspending a down hole pump wherein said cable comprising: a core having at least one tube for the transport of fluid and at least one conductor covered with an insulation layer made of a high temperature resistant insulating material, said core further having filing elements made of perfluoroalkoxy polymer wherein the core is covered by a steel tape that is in contact with the insulation layer of the at least one conductor and at least two layers of steel wires are positioned radially outside the steel tape with a polymer film between said two layers of steel wires, wherein an inner layer of said two layers of steel wires being in direct contact with the steel tape, and wherein individual steel wires forming said inner layer have a total of 37 individual steel wires which are positioned side by side around the core and in direct contact with the steel tape with no filler in between the individual steel wires and an outer layer made of heat resistant polymer covering the individual steel wires, and wherein a total diameter of the cable is substantially 45 mm.

2. The cable in accordance with claim 1 , wherein a total number of conductors within said cable is three.

3. The cable in accordance with claim 1 , wherein a total number of tubes within said cable is three.

4. The cable in accordance with claim 1 , wherein the conductor is made of copper.

5. The cable in accordance with claim 1 , wherein the heat resistant polymer of the outer layer comprises thermoplastic polyester.

6. The cable in accordance with claim 3 , wherein at least one of the tubes comprises optical fibres.

7. The cable in accordance with claim 1 , wherein the high temperature resistant insulating material of the insulation layer comprises perfluoroalkoxy polymer.

8. The cable in accordance with claim 1 , wherein the fluid to be transported in the at least one tube is a corrosion inhibitor.

Assignees

• Nexans

Inventors

• Hassel Arild
• Sangar Robin
• Wardeberg Jorn

Classifications

• H01B3/421

  Polyesters · CPC title

• H01B7/046 Primary

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

• H01B1/026

  Alloys based on copper · CPC title

• H01B7/0072 Primary

  Electrical cables comprising fluid supply conductors · CPC title

• H01B7/292

  using material resistant to heat · CPC title