Neutron-generator-based thermal neutron porosity device with high porosity sensitivity
US8759750B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Nov 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems, methods, and devices for determining porosity with high sensitivity are provided. In one example, a downhole tool with such high porosity sensitivity may include a neutron source, a near neutron detector, and a far neutron detector. The neutron source may emit neutrons into the subterranean formation, which may scatter and be detected by the near and far detectors. The near neutron detector may be disposed near enough to the neutron source to detect a maximum number of neutrons when the porosity of the subterranean formation is greater than 0 p.u.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.