Abstract
Summary This paper explains why common reflection angle migration (CRAM) is a practical way of producing superior images in subsalt seismic data. Multipathing is an essentially universal feature of imaging near salt boundaries. Common reflection angle images separate signal and noise better than common offset images. CRAM is able to combine both of these features in a cost-effective way. CRAM images can be QC'd using illumination plots as a function of dip angle.
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