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f Velocity analysis for depth migration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 54th EAEG Meeting, Jun 1992, cp-45-00177
- ISBN: 978-90-73781-04-7
Abstract
Time migration is by far the most commonly used imaging technique in seismic processing. Its popularity is not due to the economics . The time and the depth migrations takes essentially the same length of computer time. There are some differences, however, aside from the difference in their display dimensions of time and depth ; the time migrated sections appear similar in frequency content to the CDP sections and the migration process tolerate considerable errors in the velocity field . On the other hand, depth migrated sections while they show a more accurate picture of the subsurface, as demanded by todays complex exploration targets, they do require more precise velocity/depth models .