3D ILLUMINATION COMPENSATION AND RESIDUAL MOVEOUT METHOD IN THE ANGLE DOMAIN

摘要

A 3D illumination compensation and residual moveout method in the angle domain is developed to improve the quality of imaging for the data acquired by an irregular acquisition system. The approach uses the Kirchhoff integration migration to provide fast illumination analysis and amplitude compensation. A residual moveout function is presented and be used to flatten the events in the angle gather. In addition to the simple procedure and computational efficiency, the method can also avoid the singularity problem usually linked to the conventional ray tracing method. It provides a practical tool for 3D full-volume illumination analysis and extract high quality common-imaging gathers and migration sections for complicated geological structures. To demonstrate the potential application of this method, a 3D marine field-data is used to evaluate the effectiveness of our method.