Resonant acoustic transducer and driver system for a well drilli

Details Resonant acoustic transducer and driver system for a well drilli Resonant acoustic transducer and driver system for a well drilli

1980-01-21

1981-08-04

Birmiel, Howard A.

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through drill string or casing

367165, 367180, 310322, 310334, 310355, G01V 140

Patent

active

042825881

ABSTRACT:
The acoustic data communication system includes an acoustic transmitter and receiver wherein low frequency acoustic waves, propagating in relatively loss free manner in well drilling string piping, are efficiently coupled to the drill string and propagate at levels competitive with the levels of noise generated by drilling machinery also present in the drill string. The transmitting transducer incorporates a mass-spring piezoelectric transmitter and amplifier combination that permits self-oscillating resonant operation in the desired low frequency range.

REFERENCES:
patent: 2858108 (1958-10-01), Wise et al.
patent: 3900827 (1975-08-01), Lamel et al.

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