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INSUFFICIENTLY SAMPLED Q: A CAUSE OF WAVELET DISTORTION IN THE GENERATION OF SYNTHETIC SEISMOGRAMS?*
- Source: Geophysical Prospecting, Volume 33, Issue 6, Sep 1985, p. 817 - 827
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- 27 Apr 2006
Abstract
Abstract
The effect of sampling of Q‐values on the generation of one dimensional synthetic seismograms including absorption and dispersion is investigated. For the well data considered, a decrease in the Q‐sampling interval results in an elongation of the estimated reflection waveform.
Two explanations are given. The first refers to the way multiple energy is absorbed in the stratified medium. The second is based on the general observation that geological media with high velocity (e.g. limestones) often have high Q‐values, whereas media with low velocity (e.g. shales) often have low Q‐values.