Flexcompressional acoustic transducer

Details Flexcompressional acoustic transducer Flexcompressional acoustic transducer

1988-11-03

1989-09-26

Kyle, Deborah L.

Acoustics

Geophysical or subsurface exploration

Well logging

181105, 367 35, 367 86, 367174, 367912, G01V 140

Patent

active

048693499

ABSTRACT:
A flexcompressional acoustic transducer is set forth. In the preferred and illustrated embodiment, multiple parallel magnetostrictive rods provided with coils are coupled through a plate affixed to a radiating element. The radiating element in one embodiment is an elongate hollow cylinder which is closed at both ends. Vibrations from the magnetostrictive members cause the cylinder to radially flex, creating an omnidirectional acoustic wave transmitted radially outwardly, the apparatus being positioned in a sonde for connecting an acoustic wave front through the wall of the sonde for transmission into the surrounding wellbore fluids and the adjacent formations.

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patent: 4700803 (1987-10-01), Mallett et al.
patent: 4706230 (1987-11-01), Inoue et al.

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