Piezoelectric mud pulser for measurement-while-drilling applications
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United States of America Patent
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Mar 23, 1993
Grant Date -
N/A
app pub date -
Jan 23, 1991
filing date -
Jan 23, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mud pulser for measurement-while-drilling applications is disclosed which employs piezoelectric transducers to provide for variations in the mud flow through a mud pulser sleeve. The piezoelectric transducers used in the mud pulser are comprised of two piezoelectric elements bonded together in a bender bar transducer configuration, thin metallic sheets to improve the rigidity of the transducer and to protect the ceramic material and electrodes from the effects of abrasive drilling fluid, and simplified mounting means.
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