Wave‐equation angle‐based illumination weighting for optimized subsalt imaging

Abstract

We design a wave‐equation based demigration‐remigration workflow that computes a measure of uneven seismic illumination effects on angle‐gather amplitudes. We then use the workflow to generate a set of illumination weights, which, when applied to migrated gathers, improves the structural imaging in subsalt areas. We demonstrate the effectiveness of our method with narrow‐azimuth 3D subsalt examples from Gulf of Mexico.