Apparatus and method for measuring the acoustic impedance of wellbore fluids
US8824240B2 · kind B2 · utility
18Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2011 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Aug 28, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/107
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic scanner tool employs a transducer that excites a target plate at a known distance from the transducer. One side of the target plate forms a chamber that in operation is filled with wellbore fluid. On the other side of the target plate, a chamber is formed containing a vacuum or a fluid with a significantly lower acoustic impedance than the wellbore fluid and the target plate, allowing an improved measurement of the acoustic impedance of the wellbore fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.