Method and apparatus for determining fluid viscosity
US6755079B1 · kind B1 · utility
26Cited by
14References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2000 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Mar 27, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/0875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A downhole tool and method for determining the viscosity of a reservoir fluid, the tool including a passage having entry, intermediate and exit regions, in which the reservoir fluid flowing through the passage will have a lower Reynolds number in the intermediate region as compared to the entry region, the tool also including differential pressure gauge for measuring the differential pressure across the intermediate region, and either a velocity controller or fluid velocity meter, for either setting or measuring the fluid velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.