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A method for removing high static moveouts of P-SV waves

Tang Jianhou;Zhang Jinskan(Resesrch Institute, Petroleum Geology Suvery Division,Nanchong City,Sichuan Province,Postcode: 637000)  
Laterally-nonuniform weathered layer and very low velocity of shear wavescause high P-SV static moveouts which show severe lateral variation. Generally speaking, such high static moveouts can not be removed once; hence they only can the removed in the following steps: datum correction, short-wavelength statics using the values which are derived from the coherence of optimized common receivingpoint stack traces, and residual statics by extrapolation of the hole-side reference trace. This method can be applied to removal of high static moveouts of P-SV waves.
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