Determination of rock core characteristics
US5525904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Sep 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/383
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for monitoring characteristics of rock cores using NMR. The apparatus is provided with a clad permanent magnet for generating a magnetic field having a saddle profile. The magnetic field is sufficiently uniform within a working volume to enable an NMR experiment to be performed. Rock cores are conveyed along a path about which the magnet is arranged. The cores pass through the working volume of the magnetic field orthogonally to the saddle profile of the magnetic field. An NMR experiment to monitor oil bearing rock characteristics, such as porosity is carried out on a portion of the rock core within the working volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.