NMR imaging of materials for transport properties
US4719423A · kind A · utility
322Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Aug 13, 1985 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Aug 13, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
NMR imaging methods are provided for determining spatial diffusion coefficients, formation resistivity factors, mean pore size, and permeability of a porous material. The imaging methods employ a constant magnetic field and two images are obtained for the material, one with a non-imaging gradient and one without a non-imaging gradient. These images are combined to produce diffusion coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.