Fluid level indication system and technique
US7731421B2 · kind B2 · utility
15Cited by
8References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 15, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Feb 4, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/047
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A technique that is usable with a well includes changing the temperature of a local environment of a distributed temperature sensor, which is deployed in a region of the well and using the sensor to acquire measurements of a temperature versus depth profile. The region contains at least two different well fluid layers, and the technique includes determining the depth of a boundary of at least one of the well fluid layers based at least in part on a response of the temperature versus depth profile to the changing of the temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.