Decon in the log domain with variable gain
نویسندگان
چکیده
Because predictive decon fails on the Ricker wavelet, earlier we devised an extension to non-minimum phase wavelets (Yang et al, 2011). It showed remarkable clarity of seismogram polarity. Here we improve our method by a log spectral parameterization. Another innovation here is correctly handling time-variable gain. Since filtering does not commute with TV gain, gain is now done after decon (not before). Results at two survey locations confirm the utility of both improvements. An intriguing theoretical aspect shows that log spectral parameterization links penalty functions to crosscorrelation statistics of outputs.
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