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f Choice of Measurement Angles for Derivation of Ultrasonic Transverse Isotropy
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 60th EAGE Conference and Exhibition, Jun 1998, cp-110-00102
- ISBN: 978-90-73781-09-2
Abstract
Use of ultrasonic data for recovering the elastic properties of transverse isotropic materials may be of great importance for various calibration purposes of seismic data in well locations. A complete description of the elastic properties of a transverse isotopic material requires 5 parameters. Four of these may be determined from P and S velocity data taken parallel and perpendicular to the axis of the elastic symmetry. The fifth parameter, in Voigt notation referred to as c13, requires additional velocity data measured along some off-symmetry direction.