Apparatus and method for supplying electric power to cable suspended submergible pumps

• US 4,681,169 A
• Filed: 07/02/1986
• Issued: 07/21/1987
• Est. Priority Date: 07/02/1986
• Status: Expired due to Fees

• Current Assignee: TRW Incorporated Cleveland Oh An Corporation
• Original Assignee: TRW Limited (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Brookbank, Earl B. III
• Primary Examiner(s): Askin, Laramie E.
• Application Number:
  US06/881,245
• Time in Patent Office: 384 Days
• Field of Search: 174/70 R, 174/70 C, 174/97, 174/103, 174/136, 29/728, 29/820, 156/54, 156/55, 166/65.1, 166/77, 166/241, 166/242, 166/379, 166/380, 166/385
• US Class Current: 166/385
• CPC Class Codes: E21B 17/1035 for plural rods, pipes or lines, e.g. for control lines
• CPC Class Codes: E21B 19/22 Handling reeled pipe or rod units, e.g. flexible drilling pipes lifting or hauling appliances using two or more cooperating endless chains B66D3/003
• CPC Class Codes: F16L 3/223 each support having one transverse base for supporting the pipes F16L3/23, F16L3/237 take precedence
• CPC Class Codes: H01B 7/046 attached to objects sunk in bore holes, e.g. well drilling means, well pumps
• CPC Class Codes: H01B 7/0869 comprising one or more armouring, tensile- or compression-resistant elements
• CPC Class Codes: H01B 7/221 Longitudinally placed metal wires or tapes
• CPC Class Codes: H02G 7/08 Members clamped to the supporting wire or to the line or cable
• CPC Class Codes: Y10T 29/53126 Means to place sheath on running-length core
• CPC Class Codes: Y10T 74/20456 Specific cable or sheath structure

Abstract

Electric power is supplied to downhole equipment, such as a submergible pump, by a power cable that is joined to a support cable by a cable carrier as the carrier and cables are fed into a well. The carrier comprises laterally displaced resilient clamping sections that are clamped about respective cables to form a continuous assembly, and the assembly is fed into the well as the equipment is installed.

Claims

1. A method of supporting and electrically energizing equipment in a well, that comprises providing a continuous length of electrical power cable, providing a continuous length of support cable, providing a continuous length of cable carrier, feeding said continuous lengths toward the well, continuously joining said cable carrier with said power cable and with said support cable to form a unitary assembly as said lengths are advanced toward said well, and feeding said unitary assembly into said well.

2. A method in accordance with claim 1, wherein said carrier is provided with laterally displaced clamping sections and wherein said joining of said carrier to said cables comprises clamping one section about said power cable and another section about said support cable.

3. A method in accordance with claim 2, wherein said clamping sections are resilient and each has an opening at one side thereof, and wherein said joining comprises spreading each resilient section, inserting a cable therein through the opening thereof, and releasing the spreading of the section so that the section embraces the inserted cable resiliently.

4. A method in accordance with claim 2, wherein one of said sections is open at one side of said carrier and the other of said sections is open at the opposite side of said carrier, and wherein said joining comprises spreading said sections, inserting respective cables therein through the open sides thereof, and releasing the spreading so that said sections embrace said cables resiliently.

5. A cable assembly comprising a continuous length of electrical power cable, a continuous length of support cable, and a continous length of cable carrier substantially coextensive longitudinally with said cables, said cable carrier comprising two laterally displaced resilient clamping sections open at opposite sides of the carrier, one of said sections resiliently embracing one of said cables and the other of said sections resiliently embracing the other of said cables.

6. A cable assembly in accordance with claim 5, including a pair of support cables displaced laterally at opposite sides of a power cable and wherein said cable carrier has a pair of sections embracing said support cables and an intermediate section embracing said power cable.

7. A cable assembly in accordance with claim 6, wherein said power cable comprises a plurality of laterally displaced insulated conductors, each of which is embraced in a subsection of said intermediate section.