Communications – electrical: acoustic wave systems and devices – Wellbore telemetering
Reexamination Certificate
2011-08-30
2011-08-30
Zimmerman, Brian A (Department: 2612)
Communications, electrical: acoustic wave systems and devices
Wellbore telemetering
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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Baker Hughes Incorporated
Mossman Kumar & Tyler PC
Murphy Jerold
Zimmerman Brian A
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