Downhole determination of formation fluid properties
US7036362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2003 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Jan 20, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/0875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is disclosed for determining viscosity and density of fluid from formations surrounding an earth borehole, including the following steps: (a) suspending a formation testing device in the borehole; (b) drawing formation fluid into the device; (c) causing the fluid to flow in a flow line under a first set of conditions; (d) causing the fluid to flow in the flow line under a second set of conditions; (e) measuring a first fluid pressure differential in the flow line during fluid flow under the first set of conditions, and measuring a second pressure differential in the flow line during fluid flow under the second set of conditions; and (f) determining density and viscosity of the fluid as a function of the first and second measured pressure differentials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.