Pressure waves decoupling with two transducers

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering

Reexamination Certificate

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Details

C367S083000, C340S854400

Reexamination Certificate

active

08009511

ABSTRACT:
A telemetry system for communication in a borehole uses two spaced-apart transducers. The outputs from the two transducers are filtered to decoupled tool signals traveling in opposite directions. One of the two signals may be it telemetry signal while other signal may be pump noise.

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