Method and apparatus for nonsteady state testing of permeability
US4555934A · kind A · utility
47Cited by
9References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0826
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The permeability of a core sample is measured during nonsteady state flow of fluid therethrough. A predetermined test pressure is supplied to an upstream end of the core sample while that sample is disposed in a fixed, closed volume and is subjected to a constant, predetermined confining pressure. The change in pressure across the core sample, with the passage of time, is measured; and the permeability of the core sample is determined as a function of the time-related measure of pressure change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.