Noise attenuation apparatus for borehole telemetry
US7345594B2 · kind B2 · utility
16Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2003 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | May 1, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A surface mud pipeline system is described with a mechanical acoustic filter (1245) tuned to a predetermined frequency band so as to attenuate pump noise (132) within this band. The filter can be combined with a Venturi constriction to provide enhanced attenuation and is used to improve signal transmission of a mud pulse telemetry system (113-2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.