Methods and apparatus for monitoring a property of a formation fluid
US7804296B2 · kind B2 · utility
15Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2008 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Apr 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for the characterization of formation fluids are disclosed. A downhole tool disposed in a borehole penetrating a subterranean formation obtains a NMR measurement, effects a change in a characteristic of the formation fluid, and obtains another NMR measurement subsequent to the change. Alternatively, the downhole tool effects a radial gradient of a characteristic of the formation and obtains NMR measurements at two or more selected radial distances from the wellbore wall. A parameter representative of the subterranean formation or the formation fluid is further determined from the NMR measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.