Downhole power transmission system
US5744877A · kind A · utility
37Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1997 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Jan 13, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/909
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for providing large quantities of power at a selected voltage to a downhole well tool. A conductor extends between a surface regulator and the well tool. The voltage is continuously measured downhole at the well tool, and a signal proportional to such downhole voltage is transmitted to the surface regulator. The power transmitted by the surface regulator to the conductor is increased or decreased depending on fluctuations in the tool requirements and the downhole voltage. The downhole voltage signal can be modulated through the conductor to the surface regulator or can be transmitted through another conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.