Nuclear magnetic resonance determination of petrophysical properties of geologic structures
US5557200A · kind A · utility
71Cited by
14References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1994 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Jun 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved system for using magnetic resonance techniques to obtain information relating to geologic structures is disclosed. The system of the present invention uses values of the total porosity of a formation and the porosity obtained via NMR pulse echo techniques to derive additional information relating to the underlying geologic structures, including resistivity and water saturation. Independent estimate is provided to account for the presence of clay mineral content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.