Non-invasive compressibility and in situ density testing of a fluid sample in a sealed chamber
US9938826B2 · kind B2 · utility
1Cited by
35References
5Claims
0Family size
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Key dates
| Filing date | Feb 22, 2016 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Aug 20, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/0875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In situ density and compressibility of a fluid sample are determined for a fluid sample collected downhole. The density and compressibility of the fluid sampled is determined by measuring a distance to a piston contained within the sample chamber using an external magnetic field sensor that senses a magnetic field emanating from a magnet provided on the piston internal to the sample chamber. The testing is performed quickly and at the surface in a noninvasive fashion (e.g., without opening the sample chamber).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.