Producible fluid volumes in porous media determined by pulsed field gradient nuclear magnetic resonance
US5565775A · kind A · utility
44Cited by
5References
9Claims
0Family size
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Key dates
| Filing date | Jun 23, 1995 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Jun 23, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N24/081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a method to determine the bound and free fluid index of fluids in porous media by pulsed field gradient (PFG) NMR diffusion measurements. The PFG NMR signal is evaluated using a two-fluid model that describes the self diffusion coefficients for the fluid fractions with low and high translational mobilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.