Method of measuring rock wettability by means of nuclear magnetic resonance
US7397240B2 · kind B2 · utility
24Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2003 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Aug 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N24/082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring the wettability of rocks by low-field nuclear magnetic resonance is described which has application for hydrocarbon reservoir engineering or development, or in civil engineering. The method essentially determines the water wet pore surface and the oil wet pore surface when the sample is saturated with water and oil, by measurements of relaxation times (T1, T2) of the sample placed in a nuclear magnetic resonance device, previously brought to various water or oil saturation states, and calculating the wettability index by combination of values the relaxation times obtained for said surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.