3D Grid Tomography Based on Focusing Analysis

Z-99 3D grid tomography based on focusing analysis B038 Abstract 1 We have developed a new 3D grid tomography based on the analysis of focusing errors. The seismic input to this new velocity analysis is a set of migration panels that are stack images formed at various imaging conditions zero-time or non zero-time. By comparing these different common focusing error panels the best focused events and their corresponding focusing errors are picked. The picked focusing errors and associated local reflector attributes (position and dip) are then fed into the existing 3D grid tomography to update the velocity model. This new