1887

Abstract

In crosshole tomography, the radiation pattern of the source has a large influence on the observed wavefield. Meredith et al . (1991) showed how the Mach wave, generated by the tube wave in a soft formation when its velocity is high than the shear wave velocity, can produce a large arrival in the receiver borehole and hide the direct shear wave arrival. In this paper we studied the problem of seismic source radiation from a borehole into a soft formation using laboratory scaled borehole models and the finite differente method.

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/content/papers/10.3997/2214-4609.201410630
1992-06-01
2020-10-30
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