Vertical seismic profiles (VSPs) are commonly used as a densely sampled check-shot survey for sonic calibration and velocity information. In addition, VSP data also are traditionally used to provide the ideal seismic trace at the well for correlation with surface seismic. Using VSP data sets in this way not only undervalues the technique, but also misses many opportunities for extracting information that can assist surface seismic processing and interpretation.

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