Time-To-Depth Mapping and Imaging of Time-Migrated Seismic Data with Inherent Velocity Estimation

P055 Time-To-Depth Mapping and Imaging of Time- Migrated Seismic Data with Inherent Velocity Estimation E. Iversen* (NORSAR) & M. Tygel (UNICAMP) SUMMARY We introduce a procedure for mapping and imaging respectively selected events and complete timemigrated data to the depth domain. A basic assumption is the existence of an appropriate field of timemigration velocities. We utilize the image-ray concept for transformation of events or seismograms from the time-migrated domain to the depth domain. The calculation of image rays relies on the knowledge of ray velocities while the available input in this context is given in the form of a time-migration