Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 9, 2011
Patent Application Number
10549277
Date Filed
March 24, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
An acoustic telemetry apparatus and method for communicating encoded digital data from a down-hole location through a borehole to the surface is described including an acoustic channel terminated at a down-hole end by a reflecting terminal (133, 134), an acoustic wave generator (140) located at the surface and providing an acoustic wave carrier signal through said acoustic, channel, a modulator (162, 163) located down-hole to modulate amplitude and/or phase of said carrier wave in response to an encoded digital signal and one or more sensors (150) located at the surface adapted to detect amplitude and/or phase related information of acoustic waves traveling within said acoustic channel to determine the encoded digital data.
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