1990•Chinese Journal of GeophysicsRequires access

A THEORETIC INVESTIGATION ON COMPRESSIONAL AND SHEAR ARRIVALS IN AN ACOUSTIC LOG

X Wang

Abstract

In this paper, the compressional and shear arrivals excited by a point source are analyzed. It is pointed out that the compressional and shear arrivals, propagating along a borehole with Vc and Vs respectively, are attenuated waves. In far-field, their characteristic frequencies are equal to the cut-off frequencies of leaky compressional and shear modes respectively. The elastic wave function of leaky modes has been obtained.

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Available abstract

Key concepts: Shear (geology), Longitudinal wave, Shear waves, Geology, Point source, Borehole, Point (geometry), Seismology