Electromagnetic and acoustic repeater and method for use of same

Communications: electrical – Wellbore telemetering or control – Repeater in subsurface link

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3408533, 367 83, G01V 300

Patent

active

061443166

ABSTRACT:
An electromagnetic and acoustic signal repeater (34) for communicating information between surface equipment and downhole equipment and a method for use of the repeater (34) is disclosed. The repeater (34) comprises an electromagnetic receiver (48) and an acoustic receiver (49) for respectively receiving and transforming electromagnetic input signals (46) and acoustic input signals into electrical signals that are processed and amplified by an electronics package (50) that generates an electrical output signal that is forwarded to an electromagnetic transmitter (52) and an acoustic transmitter (51) for respectively generating an electromagnetic output signal (53) that is radiated into the earth and an acoustic output signal that is acoustically transmitted.

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