US3889049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submersible cable
Assignee: Centrilift Hughes Inc
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Filing: 1974-01-14
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Granted: 1975-06-10
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Expires: 1994-01-14
Abstract
Abstract An electrical conducting cable for submersible motors adapted for use in high temperature, high pressure oil wells. The cable includes separately insulated conductors disposed within an epichlorohydrin rubber jacket. The conductors are insulated with a layer of high temperature, high molecular weight, extrudable fluorocarbon, such as 1:1 copolymer of ethylene and chlorotrifluoroethylene as the primary insulation. The jacketed cable unit is protected by an outer armor formed of a suitable metal. The cable thus formed is flexible, abrasion resistant, solvent resistant, liquid impervious, heat insensitive and unaffected by well environment.
Inventors
- 👤 Leo V Legg
- 👤 Donatas Tijunelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/02; H01B7/0275; H01B7/04; H01B7/046; H01B7/17; H01B7/18; H01B7/22; H01B7/226
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A MULTICOMPONENT ELECTRICAL CABLE FOR USE WITH A SUBMERSIBLE MOTOR IN HIGH TEMPERATURE, HIGH PRESSURE OIL WELLS AND IN THE PRESENCE OF OIL WELL FLUIDS COMPRISING: AT LEAST ONE ELECTRICAL CONDUCTOR, AN EXTRUDED LAYER OF INSULATING MATERIAL HAVING AN AVERAGE THICKNESS OF 0.010 INCH TO 0.080 INCH SURROUNDING THE CONDUCTOR; SAID LAYER BEING OF AN EXTRUDABLE FLUOROCARBON HAVING A MELTING POINT OF ABOUT 460*F, A RESILIENT FLUID IMPERVIOUS JACKET SURROUNDING SAID INSULATING MATERIAL; SAID IMPERVIOUS JACKET BEING OF AN EPICHLOROHYDRIN RUBBER OF HIGH MOLECULAR WEIGHT PROTECTING SAID EXTRUDED LAYER FROM WELL FLUIDS; AND AN OUTER ARMOR SURROUNDING SAID RESILIENT JACKET.
Claim 2
Dependent Claim
100 words
A MULTICOMPONENT ELECTRICAL CABLE FOR USE WITH A SUBMERSIBLE MOTOR IN HIGH TEMPERATURE, HIGH PRESSURE OIL WELLS AND IN THE PRESENCE OF OIL WELL FLUIDS COMPRISING: AT LEAST ONE ELECTRICAL CONDUCTOR, AN EXTRUDED LAYER OF INSULATING MATERIAL HAVING AN AVERAGE THICKNESS OF 0.010 INCH TO 0.080 INCH SURROUNDING THE CONDUCTOR; SAID LAYER BEING OF AN EXTRUDABLE FLUOROCARBON HAVING A MELTING POINT OF ABOUT 460*F, A RESILIENT FLUID IMPERVIOUS JACKET SURROUNDING SAID INSULATING MATERIAL; SAID IMPERVIOUS JACKET BEING OF AN EPICHLOROHYDRIN RUBBER OF HIGH MOLECULAR WEIGHT PROTECTING SAID EXTRUDED LAYER FROM WELL FLUIDS; AND AN OUTER ARMOR SURROUNDING SAID RESILIENT JACKET.
Claim 3
Dependent Claim
100 words
A multicomponent electrical cable for use with a submersible motor in high temperature, high pressure oil wells and in the presence of oil well fluids comprising: at least one electrical conductor; an extruded layer of insulating material having an average thickness of 0.010 inch to 0.080 inch surrounding the conductor; said layer being of an extrudable fluorocarbon having a melting point of about 460*F; a resilient fluid impervious jacket surrounding said insulating material; said impervious jacket being of an epichlorohydrin rubber of high molecular weight protecting said extruded layer from well fluids; and an outer armor surrounding said resilient jacket.
Claim 4
Dependent Claim
100 words
A multicomponent electrical cable for use with a submersible motor in high temperature, high pressure oil wells and in the presence of oil well fluids comprising: at least one electrical conductor; an extruded layer of insulating material having an average thickness of 0.010 inch to 0.080 inch surrounding the conductor; said layer being of an extrudable fluorocarbon having a melting point of about 460*F; a resilient fluid impervious jacket surrounding said insulating material; said impervious jacket being of an epichlorohydrin rubber of high molecular weight protecting said extruded layer from well fluids; and an outer armor surrounding said resilient jacket.
Claim 5
Dependent Claim
16 words
A multicomponent electrical cable as recited in claim 1 in which said outer armor is metal.
Claim 6
Dependent Claim
26 words
A multicomponent electrical conductor as recited in claim 1 in which said extrudable flurocarbon comprises a 1:1 copolymer of ethylene and chlorotrifluoroethylene having a formula (CH2CH2CF2CFCl).
Claim 7
Dependent Claim
16 words
A multicomponent electrical cable as recited in claim 3 in which said outer armor is metal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |