Composite transducer for downhole ultrasonic imaging and caliper measurement

Composite transducer for downhole ultrasonic imaging and caliper measurement

A transducer assembly for downhole imaging includes a 1-3 Piezoelectric composite transducer of high Q ceramic rods in a polymer matrix. The assembly also includes a Teflon® window, a fluid-filled cavity adjacent to the window, and impedance matching material between the composite transducer and the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Patterson, Douglas J, Achanta, Anjani R, Steinsiek, Roger R, Redding, Charles E
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
FOR PERFORMING MECHANICAL WORK IN GENERAL
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY
PERFORMING OPERATIONS
PHYSICS
TESTING
TRANSPORTING
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Beschreibung
Zusammenfassung:A transducer assembly for downhole imaging includes a 1-3 Piezoelectric composite transducer of high Q ceramic rods in a polymer matrix. The assembly also includes a Teflon® window, a fluid-filled cavity adjacent to the window, and impedance matching material between the composite transducer and the fluid. The transducer is positioned to reduce the reverberation time.