Method for determining relative wettability
US5162733A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Feb 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N24/082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is provided for determining the relative wettability of a sample of a porous media with respect to a first liquid and a second liquid. The method includes the steps of providing the sample at a partially saturated state with respect to the first liquid; obtaining a first nuclear magnetic resonance (NMR) parameter value for the partially saturated sample; exposing the partially saturated sample to the second liquid for a predetermined period of time, wherein the second liquid is treated with a paramagnetic species such that the presence of the second liquid in the sample does not substantially affect the NMR signal response of the sample; obtaining a second NMR parameter value for the sample after exposure to the second liquid; and determining the relative wettability by comparing the first and second NMR parameter values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.