US4472598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Braidless perforated cable
Assignee: Baker Hughes Holdings LLC
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Filing: 1983-04-27
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Granted: 1984-09-18
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Expires: 2003-04-27
Abstract
Abstract An electrical cable has features that allow its use in wells containing oil, water and gas, for use with submersible pumps. The cable has a number of conductors. Each conductor is surrounded by an insulating layer of oil and brine resistant thermosetting material. The insulating layer is permeable to gas. A polymeric jacket is extruded around all of the conductors, separating the conductors from each other and in direct physical contact with the insulating layers. Perforations are placed in the jacket at regular intervals. During rapid depressurization, gas absorbed in the insulating layers is able to flow freely from the cable by means of the perforations in the jacket. The jacket has sufficient strength to prevent rupturing of the insulating layers during depressurization.
Inventors
- 👤 Clinton A. Boyd
- 👤 Raymond L. Guzy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:46
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/1845; H01B7/08; H01B7/0823
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
An electrical cable, comprising in combination: a plurality of conductors; an insulating layer surrounding each conductor, the insulating layer being permeable to gas and being resistant to oil and brine; and a single polymeric jacket which has been extruded over all of the insulating layers in substantially fully surrounding intimate contact with the insulating layers, a portion of the jacket being located between each of the conductors to provide hoop strength for the insulating layers to resist rupturing of the insulation layers upon lowering of the ambient pressure; and the jacket having perforations extending from its surface to the insulating layers for releasing absorbed gas.
Claim 2
Dependent Claim
105 words
An electrical cable, comprising in combination: a plurality of conductors; an insulating layer surrounding each conductor, the insulating layer being permeable to gas and being resistant to oil and brine; and a single polymeric jacket which has been extruded over all of the insulating layers in substantially fully surrounding intimate contact with the insulating layers, a portion of the jacket being located between each of the conductors to provide hoop strength for the insulating layers to resist rupturing of the insulation layers upon lowering of the ambient pressure; and the jacket having perforations extending from its surface to the insulating layers for releasing absorbed gas.
Claim 3
Independent Claim
114 words
A method of manufacturing an electrical cable for use with submersible pumps, comprising in combination: extruding an insulating layer of oil and brine resistant thermosetting insulation material around a conductor; then extruding an elastomeric jacket around a plurality of the conductors in substantially fully surrounding intimate contact with the insulating layers of each conductor, each conductor being embedded in the jacket such that a portion of the jacket will be located between each of the conductors to provide hoop strength for the insulation layers to resist rupturing of the insulation layers upon lowering of the ambient pressure; then perforating the jacket with perforations extending from the insulating layers to the surface of the jacket.
Claim 4
Independent Claim
114 words
A method of manufacturing an electrical cable for use with submersible pumps, comprising in combination: extruding an insulating layer of oil and brine resistant thermosetting insulation material around a conductor; then extruding an elastomeric jacket around a plurality of the conductors in substantially fully surrounding intimate contact with the insulating layers of each conductor, each conductor being embedded in the jacket such that a portion of the jacket will be located between each of the conductors to provide hoop strength for the insulation layers to resist rupturing of the insulation layers upon lowering of the ambient pressure; then perforating the jacket with perforations extending from the insulating layers to the surface of the jacket.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |