LAUSR

Classical prestack impedance inversion methods are based on performing a CDP by CDP inversion using Tikhonov type regularization, we refer to it as Lateral Unconstrained Inversion (1D-LUI). Prestack seismic data usually has low signal-noise-ration (S/N) and 1D-LUI approach is sensitive to noise, thus, the inversion results can be noisy and lead to unfocused transition between vertical formation boundaries. Using Lateral Constrained Inversion (1D-LCI) can suppress the noise and provide sharp boundaries between inverted 1D models in regions where layers dips are less than 200. However, in complex geology, the disadvantage of using 1D-LC approach is the lateral smearing of the steeply dipping layers. In this work, we developed Structurally Constrained Inversion (1D-SCI) approach to mitigate the smearing associated with 1D- LCI. SCI involves simultaneous inversion of all seismic CDP’s using a regularization operator that forces the solution to honor local structure. The results of the 1D-SCI were superior com...