Methods and apparatus for measuring capillary pressure in a sample
US7352179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2005 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Oct 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are provided for measuring a parameter such as capillary pressure in porous media such as rock samples. The method comprises mounting a sample in a centrifuge such that different portions of the sample are spaced at different distances from the centrifuge axis, rotating the sample about the axis, measuring a first parameter in the different portions of the sample, and determining the value of a second parameter related to the force to which each portion is subjected due to rotation of the sample. In one embodiment, the first parameter is relative saturation of the sample as measured by MRI techniques, and the second parameter is capillary pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.