Downhole fluid sampler
US6609569B2 · kind B2 · utility
63Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Oct 11, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool and method of operation is described for collecting fluid samples in a downhole environment. The tool is connectable on a work string and is activated by dropping a ball through the work string. On activation a sleeve arranged on the body of the tool is caused to shift from a first to a second position thereby creating a chamber between the sleeve and body. The sample fluid is drawn into the chamber as it is created and is prevented from exiting by a non-return valve. The tool locks the sleeve in the second position to fix the chamber. The sample can then be retrieved along with the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.