Method and apparatus for fluid influx detection while drilling
US7804060B2 · kind B2 · utility
6Cited by
11References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 14, 2006 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Nov 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A C/O ratio is determined using measurements of inelastically scattered gamma rays with a pulsed neutron source. Combined with look-up tables, the C/O measurement is used as an indicator of formation fluid influx into wellbore such as gas kick.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.