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.