Borehole sampling
US4811599A · kind A · utility
Inventors
Key dates
| Filing date | Oct 16, 1986 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Oct 16, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosed sampler comprises a reservoir formed as a stainless steel tube of narrow diameter. Two copper tubes are attached to the reservoir, one each end, and the copper tubes may be crimped so as to seal the sample within the reservoir. The sample (of water) is allowed into the reservoir through a check-valve which is opened and closed by controlling the pressure--from the surface --inside the sampler. The disclosed sampler is sealed into the borehole by means of an inflatable collar, which is also under the control of a surface-manipulated pressure. Samples transported and stored in the sampler are presented for analysis complete with contained gases and uncontaminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.