Method and apparatus for determining density of earth formations
US5608215A · kind A · utility
59Cited by
15References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1996 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Feb 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/107
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for determining the density of underground formations surrounding a borehole, such as a wireline logging tool or a logging-while-drilling tool, includes a high energy neutron source for irradiating the formations from within the borehole and a detector which detects gamma rays in the borehole resulting from the irradiation of the formations with high energy neutrons. The detected gamma rays are analyzed to determine the density of the formations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.