Velocity Model Determination Using Migrated Cylindrical Wave Data

M 034 VELOCITY MODEL DETERMINATION USING MIGRATED CYLINDRICAL WAVE DATA F. ASSOULINE and P. LAILLY Institut Français du Pétrole 1 et 4 avenue de Bois-Preau 92852 Rueil-Malmaison France Abstract The SMART (Sequential Migration Aided Reflection Tomography) method is a Migration Velocity Analysis method based on tomographic reflection that enables velocity model determination in the prospect of seismic imaging of complex geologic structures. In this method the access to multioffset kinematic information is done by demigrating the corresponding interpreted prestack migrated events and an inversion of the obtained traveltimes allows velocity model determination. The implementation in 3D of this method is