Method and apparatus for downhole chromatography
US4739654A · kind A · utility
119Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Oct 8, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for downhole chromatography. A tool housing includes a chromatograph and a formation tester for extracting a fluid sample from a formation adjacent the wall of an uncased well bore. When such a sample is extracted it is directed into the chromatograph which analyzes the same and transmits the information to the surface. Thereafter, solvent from a reservoir in the housing is used to purge the chromatograph to enable the tool to be relocated to a different level for additional formation fluid analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.