Method and apparatus for estimating of fluid contamination downhole
US7299136B2 · kind B2 · utility
29Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Aug 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/00702
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides method and apparatus for quantifying sample clean up in real time by providing curve-fitting measurements of optical or other physical properties of fluid downhole. Fluid is extracted from the formation surrounding a borehole. As fluid continues to be extracted the composition of the extracted fluid changes, altering the measured values of optical and physical properties of the fluid. Measurements are made of optical or physical properties of the sampled fluid, analysis is performed on the acquired measured data points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.