Active cable for wellbore heating and distributed temperature sensing
US7730936B2 · kind B2 · utility
57Cited by
18References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Feb 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4488
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A heating and distributed-temperature-sensor cable permanently fixed in a wellbore that permits known amounts of heat to be introduced to subsurface formations and improved temperature measurement thereof. The heat is introduced into a target zone of the wellbore by forming the cable in two sections: an upper section that carries an electrical current without generating significant amounts of heat, and a lower section that generates heat from the electrical current. Continuous distributed-temperature-sensing is performed through measuring various scattering mechanism in optical fibers that run the length of the cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.