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Zero- and Infinite-frequency Limits of P-wave Traveltime Parameters in Tilted Orthorhombic Media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Summary
We analyze and compare zero- and infinite-frequency limits of traveltime parameters of the reflected P-wave in tilted orthorhombic media. Weak-anisotropy approximations are obtained for vertical and normal moveout velocities and anellipticity parameters as a function of tilt angle. We show that they are equal in both frequency limits. We derive the approximate relation between zero- and infinite- frequency limits of the vertical P-wave velocity and demonstrate that vertical P-wave velocity in infinite-frequency is always higher than the one in zero-frequency limit. We use real well log data to demonstrate the correspondence between the frequency limits.
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