Method and apparatus for determining the temperature of subterranean wells using fiber optic cable
US7000696B2 · kind B2 · utility
27Cited by
8References
52Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2003 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Aug 31, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/07
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatuses to determine the temperature profile of a pressurized wellbore using a fiber optic cable and an anchor are disclosed. Furthermore, a pressurized wellhead spool that couples to a standard Christmas tree structure on a well head to facilitate the injection of fiber optic cable into an oil and gas well is disclosed. The wellhead spool is portable and may be connected to fiber optic cable already located at the site, for quick connection to on-site instrumentation. A method of using the apparatuses disclosed to measure wellbore temperature at multiple depths of investigation is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.