Downhole surveying utilizing multiple measurements
US8781744B2 · kind B2 · utility
27Cited by
74References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2013 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Apr 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Certain embodiments described herein provide an estimate of the magnetic interference incident upon a drilling system using multiple magneticclaim sensors within a downhole portion of the drilling system in a first wellbore. Certain embodiments utilize the magnetic measurements to determine an axial interference resulting from one or more magnetic portions of the downhole portion and to provide an estimate of a relative location of a second wellbore spaced from the first wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.