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Measured Anisotropy in Pierre Shale*

By
J. E. White
J. E. White
**
Colorado School of Mines, Golden, Colorado 80401, USA.
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L. Martineau-Nicoletis
L. Martineau-Nicoletis
***
Colorado School of Mines, Golden, Colorado 80401, USA, now at Institut Français du Pétrole, BP 311, 92500 Rueil Malmaison, France.
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C. Monash
C. Monash
**
Colorado School of Mines, Golden, Colorado 80401, USA.
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Published:
January 01, 2000

Abstract

White, J.E., Martineau-Nicoletis, L. and Monash, C. 1983, Measured Anisotropy in Pierre Shale, Geophysical Prospecting 31, 709-725.

The five elastic coefficients which characterize a transversely isotropic medium have been measured for the Pierre Shale. The first-arrival times deduced from two closely spaced vertical seismic profiles provide values of magnitude and direction of the phase velocity at a given depth for different locations of the sources. From these velocities, we can estimate the five elastic coefficients by assuming that the P- and SV-wave velocities have only a small dependence on the angle of propagation. On the other hand, it is shown that the accuracy in the difference between the directions of propagation and particle motion is not sufficient to determine the anisotropy.

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Contents

Society of Exploration Geophysicists Geophysics Reprint Series

Seismic Wave Propagation: Collected Works of J. E. White

J. E. White
J. E. White
Professor Emeritus, Colorado School of Mines
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Society of Exploration Geophysicists
Volume
21
ISBN electronic:
9781560802471
Publication date:
January 01, 2000

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