Conduit in supplying electrical power and pressurized fluid to a point in a subterranean well
US4346256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1980 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Apr 1, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B7/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A conduit is provided for transmitting both electrical power and pressured hydraulic fluid from the surface to a point in a subterranean well. The conduit comprises an outer housing formed of steel or other high tensile strength material and one or more insulated wires of copper or similar low tensile strength, highly conductive metal which are run through the outer housing. Supports are provided between the external surfaces of the insulated wires and the internal wall of the housing to frictionally anchor the insulated wires to the housing. The supports also define fluid passages therethrough so that pressured fluid may be transmitted through the bore of the housing. So that the wires are gravitationally stabilized within the outer housing, the average density of the supports and the pressured fluid is approximately equal to the average density of the insulated wires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.