Downhole sampling apparatus and method for using same
US7195063B2 · kind B2 · utility
20Cited by
23References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Jul 30, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/081
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for sampling formation fluid includes drawing formation fluid from the subterranean formation into the downhole tool and collecting the formation fluid in a sample chamber. An exit flow line is operatively connected to the sample chamber for selectively removing a contaminated and/or clean portion of the formation fluid from the sample chamber whereby contamination is removed from the sample chamber. For example, a clean portion of the formation fluid may be passed to another sample chamber for collection, or a contaminated portion may be dumped into the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.