Migration Velocity Analysis in Complex Media - Application to the Marmousi Data Set

M-33 MIGRATION VELOCITY ANALYSIS IN COMPLEX MEDIA: APPLICATION TO THE MARMOUSI DATA SET H. CHAURIS 1 previously 2 M. NOBLE 2 S.XU 2 and G. LAMBARÉ 2 1 Shell International Exploration and Production Volmerlaan 8 P.O. Box 60 2280 AB Rijswijk The Netherlands 2 Ecole des Mines de Paris Abstract – We demonstrate a method for 2D velocity estimation in complex media characterized by triplicated ray fields. Due to multipathing Migration Velocity Analysis (MVA) principle has to be revisited requiring in particular the use of Common Angle Gathers (CAGs) instead of the classical common offset panels. For the inversion itself