Downhole microseismic detection for passive ranging to a target wellbore
US10364667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2014 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method can include measuring microseismic activity in a relief wellbore, thereby detecting a microseismic event in an earth formation penetrated by the relief wellbore, and determining a location of an influx into a target wellbore, based on the microseismic event detecting. A microseismic ranging system for use with a subterranean well can include at least one microseismic sensor in a relief wellbore that penetrates an earth formation, with the microseismic sensor detecting a microseismic event in the formation, the microseismic event 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 microseismic event in an earth formation penetrated by the relief wellbore, and determining a location of an influx into a target wellbore, based on the microseismic event detecting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.