Summary

Much research and testing has been done with simultaneous sources in recent years because of its potential cost savings in acquisition. Similarly, broadband acquisition is gaining in popularity because of its potential to increase the frequency bandwidth of the acquired data. Both acquisition methods pose challenges in seismic imaging. Here, we simulate a simultaneous source experiment with a real variable-depth streamer NAZ survey acquired in Brazil and apply an iterative separation flow using a hybrid of median and f-x projection filters for deblending. The results show little leakage after deblending in both near and far offsets while preserving the AVO characteristics. We also perform Kirchhoff migration in order to examine the residual cross-talk in common image gathers after deblending. The results reveal little leakage, and the quality of the common image gathers is adequate for velocity model building. We also study how the existence of spatial aliasing when shots are coarsely sampled degrades the deblending quality. Last, we investigate the impact of firing multiple sources simultaneously to improve shot sampling.

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