Tomographic inversion of checked events on seismic migrated data uses depth migration before addition of seismic data is determined for a number of field speeds

摘要

A method of inverting events that have been picked from a depth-migrated seismic trace, wherein a collection of traces is determined by depth migration prior to addition, the traces reflecting vertically below, a given surface point, and processing is applied to said collection of traces in order to select a velocity field parameterization which optimizes the alignment of points which are migrated from said collection of traces.