Downhole thermal anomaly detection for passive ranging to a target wellbore
US10947839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2014 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Feb 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V9/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method can include measuring temperature along a relief wellbore, thereby detecting a temperature anomaly in an earth formation penetrated by the relief wellbore, and determining a location of an influx into a target wellbore, based on the temperature anomaly detecting. A thermal anomaly ranging system for use with a subterranean well can include a temperature sensor in a relief wellbore that penetrates an earth formation, the temperature sensor detecting a temperature anomaly in the formation, and the temperature anomaly being caused by an influx into a target wellbore. Another method can include measuring optical scattering in an optical waveguide positioned in a relief wellbore, thereby detecting a temperature anomaly in an earth formation penetrated by the relief wellbore, and determining a location of an influx into a target wellbore, based on the temperature anomaly detecting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.