Logging method for determining characteristic of fluid in a downhole measurement region
US7511487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2007 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Feb 27, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5617
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
For use in logging downhole in an earth borehole, a method for determining a characteristic of oil, includes: providing and determining the viscosity of a plurality of crude oil samples; performing test measurements, using a predetermined operating mode, on media including the crude oil samples to obtain test data; applying a test processing procedure to the test data to obtain an output test parameter relating to the test data and the predetermined operating mode; deriving, for the plurality of crude oil samples, a correlation relating the output test parameter to the viscosities of the crude oil samples; performing downhole measurements in the measurement region with a logging device, operated with substantially the predetermined operating mode, to obtain logging data, and applying a measurement processing procedure to the logging data to obtain an output logging parameter; and determining the oil characteristic using the output logging parameter and the correlation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.