Conclusions

This paper presented a qualitative proof that focusing-effect AVO/AVA (FEAVO/FEAVA) can be removed from the seismic image just by a single pass of one-way wavefield extrapolation migration. Modeling such data is more complicated. If just correct-velocity images of the modeled data were needed, then the data could be modeled with one-way exploding-reflector schemes. If data needed to be analyzed before migration, or if incorrect velocities were used for migration, then modeling should be done with a two-way scheme, or a two-pass, one-way one.