||Aligning microseismic reflections for imaging||
Up: Farghal and Levin: Aligning
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From our results, we see that receiver-by-receiver shifting is better than
bulk shifting as it produces larger signal amplitude and overlap as demonstrated by the higher
amplitudes of the stacked reflections. We note that fractional shifting did not help much to
improve alignment in these examples, that is, whole
samples were sufficient, but we will continue to use this method in order to develop and mature it
for general application to microseismic data that may well need fractional shifting for
Finally, although shear reflections are sufficient for imaging, that fact that we were
able to identify later P-arrivals that encourages us to not abandon our search for P-reflections.