Patent ID: 8095320

Claim:
A computer implemented method of suppressing residual water bottom energy in seismic data, the method comprising the steps of: obtaining common depth point stacked three-dimensional seismic data defining a post-stack data volume, the post-stack data volume comprising a plurality of seismic traces, each seismic trace including a header including cross-line and sub-line numbers; obtaining two-way water bottom time data for each of the plurality of seismic traces; storing the respective two-way water bottom time data obtained for each of the plurality of seismic traces in the respective header; obtaining a sub-surface horizon time data for each of the plurality of seismic traces; storing the respective sub-surface horizon time data obtained for each of the plurality of seismic traces in the respective header; flattening the stacked seismic data defining a flattened seismic data volume so that a reference horizon is positioned at a constant time for each of the plurality of traces in the post-stack data volume; extracting a time window from the flattened seismic data volume; computing an autocorrelation, by a computer, for each separate one of the plurality of seismic traces in the volume responsive to the respective extracted time window for the respective seismic trace in the volume; performing a multi-domain autocorrelation analysis, by the computer, on a plurality of different domains responsive to the plurality of autocorrelations; applying a multi-domain deconvolution to the post-stack seismic data, by the computer, using terms derived from at least two of the plurality of different domains to thereby identify and suppress the residual water bottom energy; and providing seismic data providing an improved resolution responsive to suppression of the residual water bottom energy from within the post-stack seismic data.