Heated power cable
US5974226A · kind A · utility
6Cited by
5References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jun 1, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jun 1, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B7/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heated power cable for oil wells providing controllable, variable power output and heater redundancy. Heating elements are electrically and thermally insulated within the same armor in a manner that permits the heating elements to direct heat to the oil in the well, while simultaneously protecting the power conductors from excess heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.