SPECTRAL ANALYSIS AND PROCESSING OF SEISMIC DATA USING ORTHOGONAL IMAGE GATHERS

摘要

A method for spectral analysis of seismic data obtains imaged seismic data (202) and generates orthogonally shifted imaged seismic data gathers (204). The orthogonally shifted imaged seismic data gathers are processed to generate a spectrally processed imaged seismic data (205). Alternatively, the imaged seismic data are obtained using a spectral processing filter that is a function of a magnitude of a total wavenumber of the imaged seismic data in three dimensions and a spatially variable velocity function (104).