116 Well seismic surveying and acoustic logging 4.7 Conclusion This example presents the use of VSP and acoustic logging for tying surface seismic sections. Figure 4.9 shows the comparison between tying the section using acoustic logging (synthetic seismogram) and the use of VSP stacked trace. The synthetic seismic traces and the VSP stacked trace are inserted into the in-line seismic section 3 at the intersection with the cross-line seismic section 6. The synthetic seismogram enables the reflectors to be tied in the depth range where the logs have been recorded. The VSP stacked trace allows the tying in the same depth range, but it also enables the prediction of reflectors under the well, particularly in the 90 to 140 m range. a b Figure 4.9 Tying of a seismic section using a VSP and an acoustic log; a: in time, b: in depth. References Boyer S., Mari J.L., 1997, Seismic surveying and well logging. Éditions Technip, Paris. Mari J.L., Herold D., 2015, Seismic Processing Tutorial: using the SPW Software, EAGE Publications bv.
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