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The midpoint-offset traveltime equation [equation ()]
can be used directly in a prestack Kirchhoff-type migration
of common-offset gathers. This equation provides us with the summation curve
used to implement the Kirchhoff migration for a given offset. Using such a prestack
migration, I will test the accuracy of equation () by migrating
synthetic data that include horizontal, as well as dipping, reflections. The position of the migrated
reflectors as well as the moveout after migration are two key indicators to the accuracy
of the new pyramid equation for VTI media. The synthetic data are generated using a method described
by () for VTI media. The test here is applied to homogeneous, as well as v(z) media.
Next: Homogeneous media
Up: Rickett, et al.: STANFORD
Previous: The accuracy of the
Stanford Exploration Project
7/5/1998