Method of calibrating an azimuthal inductive cross-coil or tilted coil instrument
US7915895B2 · kind B2 · utility
15Cited by
39References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2007 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Sep 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A phase error in measurements made by a resistivity logging tool is estimated by positioning the tool above a conducting surface. Deviation of the measured phase difference between the transmitter and the receiver from 90° gives the phase error in the electronics. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.