Patent ID: 9651696
Date: 2017-05-16
CPC Classifications: G01V

Claim:
1. A method for shear noise attenuation of seismic data using a High Angular Resolution Complex Wavelet Transformation (HARCWT), said method comprising: acquiring the seismic data representative of a response of an underground explored formation to a seismic excitation; computing a number of wavelet orientations for each stage of said HARCWT, wherein different stages of said HARCWT have different number of wavelet orientations; performing a wavelet analysis of vertical particle velocity data and pressure data in each frequency sub-band for all wave numbers and all frequency sub-bands in each wave number of the wavelet orientations to determine respective components; matching a vertical particle velocity data component to a pressure data component, based on said wavelet analysis, to suppress shear noise; outputting shear noise suppressed seismic data based on said matching; and generating an image of the underground formation using the shear noise suppressed seismic data.