Acoustic telemetry systems and methods with surface noise...

Details Acoustic telemetry systems and methods with surface noise... Acoustic telemetry systems and methods with surface noise...

2008-01-29

2008-01-29

Zimmerman, Brian (Department: 2612)

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

C367S082000, C166S250150

Reexamination Certificate

active

07324010

ABSTRACT:
Acoustic telemetry systems and methods with surface noise cancellation. One illustrative embodiment may include an acoustic telemetry system comprising a transmitter configured to generate an acoustic information signal that propagates along a drillstring, and a receiver configured to detect an acoustic receive signal from the drillstring and a noise signal from a surface environment. The receiver operates on the acoustic receive signal and the noise signal to produce a modified signal indicative of the acoustic information signal and having a reduced noise content relative to the acoustic receive signal.

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patent: 6781520 (2004-08-01), Smith et al.
patent: 2004/0155794 (2004-08-01), Gardner
patent: 2005/0024232 (2005-02-01), Gardner et al.

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