Title:
PIEZOELECTRIC TRANSDUCER AND DOWNHOLE TOOL FOR MEASURING FLUID PROPERTIES
Document Type and Number:
WIPO Patent Application WO/2012/125934
Kind Code:
A3
Abstract:
A transducer includes a preload adapter having a sleeve portion and an end and a housing including a seating portion and a shaft portion that extends from the seating portion. The transducer also includes a piezoelectric element contained at least partially within a chamber that is at least partially defined by the sleeve portion and shaft portion and a diaphragm coupled to an external side of the end such that motion of the piezoelectric element causes motion of the diaphragm.
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Inventors:
SWETT DWIGHT W (US)
STIBBE HOLGER C (US)
STIBBE HOLGER C (US)
Application Number:
PCT/US2012/029461
Publication Date:
February 28, 2013
Filing Date:
March 16, 2012
Export Citation:
Assignee:
BAKER HUGHES INC (US)
SWETT DWIGHT W (US)
STIBBE HOLGER C (US)
SWETT DWIGHT W (US)
STIBBE HOLGER C (US)
International Classes:
E21B47/01; E21B19/24; E21B49/10
Foreign References:
| US3743869A | 1973-07-03 | |||
| US4638872A | 1987-01-27 | |||
| US4594584A | 1986-06-10 | |||
| US6938470B2 | 2005-09-06 | |||
| US5139087A | 1992-08-18 |
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