Method and device for in situ detection of a mineral deposit fluid within a borehole
US4286461A · kind A · utility
14Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Nov 1, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/032
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The amplitude variation of an acoustic wave propagated within drilling mud mixed with a mineral-deposit fluid is measured and compared with the amplitude of a reference wave obtained from the drilling mud alone. The method and the device are primarily applied to the detection of an inflow of oil or gas during a well-drilling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.