Resonant acoustic structure for measuring well or borehole depth
US10787899B2 · kind B2 · utility
0Cited by
8References
10Claims
0Family size
Inventor
Key dates
| Filing date | Jul 17, 2018 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Mar 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus to measure the fluid depth in a well or borehole is described. The approach reduces the effects of acoustic noise occurring near the top of the well or borehole that can interfere with the fluid depth measurement. A resonant acoustic structure between an acoustic transducer and the well or borehole provides efficient coupling of spectrally narrow acoustic signals into the well or borehole, as well as providing a bandpass acoustic filter on the returning signal, to improve the signal to noise ratio of the desired acoustic reflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.