Patent ID: 9256925
Filing Date: 2016-02-09
CPC Classification: G01V,G06T

Claim Text:
1. A method for generating a seismic image, comprising the steps of: a) providing at least one input trace corresponding to seismic signals received at a receiver at a known receiver depth; b) using the input trace to generate a series of angle traces, each having a known time dip (p c) for each angle trace, using where v w is the propagation velocity in water to determine an angle θ and where z r is the receiver depth and ω is the angular frequency to determine a filter H; d) for each angle trace, correcting the data for ghosting by using the inverse of the filter H so as to generate a plurality of deghosted angle traces; e) copying each deghosted angle trace over to a plurality of output locations, applying in each case the time dip for that angle trace, so as to generate a plurality of corrected angle traces; f) at each output location, summing a plurality of the corrected angle traces at that output location so as to generate a replacement trace; and g) using the replacement trace to generate a seismic image.