Method of discerning water from hydrocarbon fluids using downhole NMR instruments in petroleum reservoirs with formation brine
US8115481B2 · kind B2 · utility
12Cited by
12References
18Claims
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Key dates
| Filing date | Jul 22, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Apr 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for analytically separating properties of hydrocarbon materials from other materials in a downhole environment, the method including: performing nuclear magnetic resonance (NMR) measurements downhole; determining a signal for sodium-23 (23Na) from the NMR measurements; and associating the 23Na signal with the other materials. A computer program product, an apparatus and additional methods are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.