Abstract: In conventional seismic data processing, reflect wave migration images are based on common depth point (CDP) or common midpoint (CMP) stacking technology. In an area with relative complex geologic structures, introduction of stacking process may result in some aberrance or lost of seismic reflect information from big dip-angle strata or fine or micro geologic phenomenon. The currently matured pre-stack migration imaging technique in computation can compensate limitations of post-stack migration imaging technique, particularly in pediment area with complex structures. This technique can not only make images of reflect waves properly,but also improve signal to noise ratio and resolution of seismic data.

Key words: migration, velocity, signal to noise ratio, resolution