System and device for acoustic measuring in a medium
US8984945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2012 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Jun 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/056
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for acoustic measuring in a medium in a borehole such as velocity of sound in the medium or velocity of the medium, includes at least a first acoustic array situated in a first, slanted sidewall of a measuring area and operating to emit a series of acoustic waveforms across a measuring area. In one form, the device includes a second acoustic array situated in a second, slanted sidewall of the measuring area and operating to receive an acoustic signal resulting from the emitted series of acoustic waveforms or to receive said acoustic signal and emit a second series of acoustic waveforms. A the processor measures a time between when a predefined portion of one of the series of acoustic waveforms was emitted and when a predefined portion of the received acoustic signal corresponding to the predefined portion of one of the series of acoustic waveforms is received by the acoustic receiver, and correlates the measured time to a reference time, then outputs a correlation factor for determining the velocity of sound in the medium in the measuring area. The processor may also calculate transit time for the two emitted acoustic signals or echoes from the first emitted acoustic signa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.