Method and apparatus for use of the real component of a magnetic field of multicomponent resistivity measurements
US7336080B2 · kind B2 · utility
2Cited by
12References
26Claims
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Key dates
| Filing date | Nov 22, 2004 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Apr 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Multi-component induction measurements are made using a resistivity logging tool in an anistropic earth formation. A subset of the multi-component measurements are inverted to first determine horizontal resistivities. Using the determined horizontal resistivities and another subset of the multi-component measurements, the vertical resistivities are obtained. Results of using the in-phase signals are comparable to those obtained using multifrequency focusing of quadrature signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.