Patent ID: 8239135
Filing Date: 2012-08-07
Classification: G01V

Abstract:
1. A method for geophysical prospecting transforming comprising: disposing a marine seismic streamer in a body of water; responsive to signals recorded at receivers in the marine seismic streamer, calculating seismic traces representing physical wavefields traveling in the body of water incident on the receivers: correcting for spatial aliasing by transforming the seismic traces into a seismic attribute useful for identifying and characterizing subsurface formations, the transforming comprising: applying filters to the seismic traces to generate filtered traces with attenuated spatially aliased energy; multiplying the filtered traces in frequency-wavenumber domain by a complex function of frequency and wavenumber representing the seismic attribute in the frequency-wavenumber domain, to generate scaled traces; dividing the scaled traces, transformed to time-space domain, by the filtered traces in the time-space domain, to generate a seismic attribute with attenuated spatially aliased energy; and recording the seismic attribute with attenuated spatially aliased energy.