Method and apparatus for nuclear logging using lithium detector assemblies and gamma ray stripping means
US5278758A · kind A · utility
28Cited by
7References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1990 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Apr 17, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for nuclear logging, and in particular, neutron porosity logging is presented. In accordance with the present invention, a pair of spaced lithium detectors, preferably Li.sup.6 I crystal or Li.sup.6 doped glass are used to detect neutrons emitted from a borehole formation being logged. In addition, novel data processing is used to strip the gamma-ray peak from the spectrum developed by the lithium detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.