Abstract
Summary Tetrahedral anisotropic ray tracing has been applied to Kirchhoff prestack depth migration for 3-D media. Utilizing a tetrahedron as the basic model element permits complex structures to be accurately and efficiently represented. The algorithm for anisotropic ray tracing is semi-analytic, and thus is computationally efficient. The Kirchhoff method for prestack depth migration is a well-established and robust technique for improving subsurface imaging in complex geologic areas. The extension to anisotropic Kirchhoff prestack depth migration enables more accurate positioning and improved focusing of reflectivity associated with anisotropic media.
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