P275 Full Waveform Inversion of Multicomponent Offset VSP Data for Recovery Impedances Bellow Borehole Bottom I.Y. Silvestrov* (Institute of Petroleum Geology & Geophysics SB RAS) SUMMARY This work is devoted to studying the possibility of implementation of full waveform inversion to recovery elastic impedances below borehole bottom. The offset VSP acquisition is used. At first the SVD-analysis of operator mapping media parameters to the multicomponent VSP data is presented. It was proved that elastic impedances are more appropriate parameters for the inversion. Also the influence of source signature to the solution of inverse problem was studied. The second part of


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