DEVICE AND METHOD FOR ESTIMATING PRE-STACK WAVELET MODEL FROM SEISMIC GATHERS
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United States of America Patent
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Jun 20, 2017
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Jul 18, 2016
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Computing device, computer instructions and method for calculating a characteristic of the earth based on recorded seismic data related to a subsurface. The method includes receiving well log data; calculating a statistical model based on the well log data; calculating a reflectivity R of the subsurface based on an intercept A and a gradient B of the statistical model; calculating a reconstructed gather D based on the reflectivity R and a wavelet model W; calculating parameters wn of the wavelet model W with a first inversion function C that depends on (i) the reconstructed gather D, (ii) a recorded gather D0, and (iii) a probability density function (pdf) associated with the statistical model; and calculating the characteristic of the earth for the subsurface, based on the parameters wn of the wavelet model W and the recorded gather D0.
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