Multiple magnetic sensor ranging method and system
US10113414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2009 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Apr 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods for drilling a second well in a spatial relationship to a first well include positioning a magnetic field source in a first well or borehole and deploying at least two magnetometers in a second well or borehole. The magnetometers are separated by a known distance and each measure the magnetic field created by the magnetic field source that is located in the first borehole. The magnetic field measurements are used to calculate the locations of the two magnetometers with respect to the magnetic field source. The two locations define the axis of the second borehole with respect to the magnetic field source in the first borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.