Improved Sub-basalt Structural Imaging in the Faroe-Shetland Basin Using Full Sequence Migration Multi-velocity Analysis

Abstract

We describe three key processing approaches which in combination are seen to provide a dramatic uplift over the original time processing. These are the enhancement of available low frequencies through a propriety spectral manipulation technique, multi-domain noise attenuation and a method we term Full Sequence Migration Multivel Analysis . The latter adopts strategies analogous to those used in pre-stack depth imaging and is seen to greatly enhance the interpretability of previously concealed structures at depth.