Correction of motion influences in NMR signals
US7268547B2 · kind B2 · utility
20Cited by
10References
63Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 5, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Nov 8, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N24/081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for compensating for the effect of tool motion in NMR MWD measurements. Signals obtained from a directionally sensitive receiver are compensated for the effects of tool motion. In an alternative embodiment, directional transmitters and receivers are used, with the pulsing of the transmitter controlled by the output of motion sensors. In another embodiment, the transmitters and receivers may be axisymmetric and the received signals are corrected using results of a NMR simulation program that takes account of the recorded motion of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.