Calibrator for radioactivity well logging tools
US4119847A · kind A · utility
9Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1976 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Oct 28, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radioactivity well logging tool including a gamma radiation detector is field calibrated with the help of a flexible sheet having a radioactive substance dispersed therein, which is wrapped about the tool so as to completely surround the detector. The sheet is made of an elastomer such as polyurethane, and the radioactive substance is carnotite. This sheet is placed within a nylon sheath which has straps for holding the calibrator wrapped around the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.