System for transmitting a signal

Details System for transmitting a signal System for transmitting a signal

1994-08-29

1996-10-22

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through drill string or casing

367156, 367168, 175 40, H04H 900

Patent

active

055684483

ABSTRACT:
A magnetostrictive element generates an ultrasonic wave and the generated ultrasonic wave is propagated through a propagation medium. An acoustic wave receiver receives the propagated ultrasonic wave at the other end of the propagation medium and converts it into an electric signal. A signal transmission is carried out in this way.

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patent: 3697940 (1972-10-01), Berka
patent: 3961308 (1976-06-01), Parker
patent: 4283780 (1981-08-01), Nardi
patent: 4293936 (1981-10-01), Cox et al.
patent: 4646999 (1987-01-01), Lygas
patent: 5022014 (1991-06-01), Kulczyk et al.
Grudzinski et al, "Telemetry Using the Propagation of an Electromagnetic Wave Along a Drill Pipe String", Louisiana State University, Baton Rouge, LA, Feb. 26-27, 1990, pp. 66-74.
A. Jitsumori et al., "Measured Data Transmission Technique at Underground in Oil Excavation", IEEE Journal Japan, vol. 112, No. 11, 1992, pp. 877-884.
A. Kawabata, "Ultrasonic Transducer", Measurement and Control, vol. 28, No. 5, May 1989, pp. 398-403.

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