Error correction and calibration of a deep reading propagation resistivity tool
US7141981B2 · kind B2 · utility
30Cited by
9References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jan 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A resistivity logging tool suitable for downhole use includes a transmitter, two spaced apart receivers. The measured resistivities at the two receivers are corrected for differences in receiver characteristics based on measuring the responses of the receivers to a calibration signal passed through calibration circuits. The logging tool may be used in reservoir navigation. A calibration antenna positioned between the two receivers may be used to identify factors other than the distance to a bed boundary that may effect the receiver signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.