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1. (WO1997014869) METHOD AND APPARATUS FOR IMPROVED COMMUNICATION IN A WELLBORE UTILIZING ACOUSTIC SIGNALS

Pub. No.:    WO/1997/014869    International Application No.:    PCT/US1996/016670
Publication Date: Apr 24, 1997 International Filing Date: Oct 18, 1996
IPC: E21B 23/04
E21B 47/18
Applicants: BAKER HUGHES INCORPORATED
Inventors: GREEN, Robert, R.
HARRELL, John, W.
Title: METHOD AND APPARATUS FOR IMPROVED COMMUNICATION IN A WELLBORE UTILIZING ACOUSTIC SIGNALS
Abstract:
A method and apparatus for communication with downhole wellbore tools using acoustic transmission techniques is disclosed. A completion fluid (1108) disposed in the wellbore (1100) acts as the transmission medium between a surface acoustic transducer (1126) and a downhole acoustic transducer (1112). The transducers may be used to actuate a downhole tool from the surface or to receive data or communication at the surface from a downhole tool.