Naturally occurring radioactive material contamination detection means
US5675146A · kind A · utility
1Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Sep 11, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Radioactive contamination on tubing is detected as the tubing is withdrawn from a wellbore. The tubing is moved past a detector located on the wellhead, preferably through an annular shaped detector, and means responsive to the detected level of radiation exceeding predetermined limits activate both an alarm to gain the operator's attention and means to apply indicia to the contaminated tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.