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P-Wave Nonhyperbolic Moveout Inversion in Azimuthally Anisotropic Media – Methodology and Real-Data Example
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 67th EAGE Conference & Exhibition, Jun 2005, cp-1-00404
Abstract
P098 P-WAVE NONHYPERBOLIC MOVEOUT INVERSION IN AZIMUTHALLY ANISOTROPIC MEDIA: METHODOLOGY AND REAL-DATA EXAMPLE IVAN VASCONCELOS and ILYA TSVANKIN Center for Wave Phenomena Colorado School of Mines Golden CO 80401 USA Abstract The azimuthally varying nonhyperbolic moveout of P-waves in orthorhombic media can provide valuable information for characterization of fractured reservoirs and seismic processing. Here we present a technique to invert long-spread wide-azimuth P-wave data for the orientation of the vertical symmetry planes and (1) (2) five key moveout parameters – the symmetry-plane NMO velocities V nmo and V nmo and the anellipticity parameters η (1) η (2) andη (3) .