Borehole Telemetry System

摘要

An acoustic telemetry apparatus and methods for communicating digital data from a down-hole location through a borehole to the surface or between locations within the borehole are described including a receiver and a transmitter linked by an acoustic channel wherein acoustic channel has a cross-sectional area of 58 cm² or less and the transmitter comprises an electro-active transducer generating a modulated continuous waveform.