One of the most important components in a downhole system for ultrasonic logging is the acoustic insulator which is used to prevent signals from propagating along the case of the tool between the transmitters and receivers. A poor-quality insulator would result in the appearance of a false first arrival which would interfere with the wide usage of such logs.


Elastic Wave Copper Wire Seismic Wave Propagation Energy Absorber Resin Coating 
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Literature Cited

  1. 1.
    A. W. Engle and J. L. Casey, Acoustic insulator for acoustical well logging, U.S. Pat. 2,994,398 (August 1, 1961).Google Scholar
  2. 2.
    G. S. Summers and W. Gravley, Exploring unit for acoustic well logging, U.S. Pat. 2,897,478 (July 28, 1959).Google Scholar

Copyright information

© Consultants Bureau, New York 1969

Authors and Affiliations

  • V. G. Gratsinskii

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