NMR apparatus and method for stochastic pulsing of earth formations
US7015694B2 · kind B2 · utility
9Cited by
21References
28Claims
0Family size
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Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Aug 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Stochastic pulsing using random or pseudo-random sequences is used for determination of nuclear spin properties of earth formations. This reduces the power requirements. Processing of the received signals may include linear or nonlinear cross-correlation with the excitation pulse sequence. Inversion of the results of the processing gives the desired nuclear spin property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.