Determining organic carbon downhole from nuclear spectroscopy
US7615741B2 · kind B2 · utility
8Cited by
13References
23Claims
0Family size
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Key dates
| Filing date | Jun 27, 2007 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Oct 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Elemental analysis of an earth formation is obtained using measurements from a gamma ray logging tool. From the elemental analysis, an estimate of the Calcium, Magnesium and Carbon content of the formation is determined. The amount of organic carbon in the formation is estimated from the total Carbon content and the inorganic carbon associated with minerals in the formation. An indication of source rock may be obtained from the Th/U ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.