Patent ID: 8660798

Claim:
A computer-implemented method of de-aliasing seismic data, wherein the method is implemented in a computer system having one or more processors configured to execute one or more computer program modules, the method comprising: (a) obtaining a first trace of seismic data representing the propagation of seismic energy through a geological volume of interest from a source positioned at a single source location to detectors positioned at detector locations spaced apart according to a detector spacing, the first trace of seismic data further representing a plurality of detector beam arrivals as a function of time, and (b) determining a midpoint dip corresponding to at least one detector beam arrival represented in the first trace of seismic data, wherein the midpoint dip is determined based on arrival time of the at least one detector beam arrival; (c) determining a filter to be applied to the trace of seismic data to remove frequencies of seismic energy from the first trace of seismic data that have been aliased by the detector spacing, the filter being determined based on the midpoint dip corresponding to the at least one beam arrival and the detector spacing; (d) applying the determined filter to the trace of seismic data; and (e) communicating or storing to a non-transient storage medium, the filtered seismic data.