A case study of azimuthal AVO analysis with anisotropic spreading correction
نویسنده
چکیده
Seismic methods play an important role in the development of tight fractured reservoirs with substantial spatial variability of fracture density. Here, we apply a comprehensive processing sequence designed for layered azimuthally anisotropic media to wide-azimuth P-wave data acquired over a fractured gas sand formation in the Rulison field, Colorado. The main processing steps include nonhyperbolic moveout inversion based on an orthorhombic velocity model, estimation of effective and interval normal-moveout (NMO) ellipses, anisotropic geometricalspreading correction, and azimuthal amplitude-variationwith-offset (AVO) analysis.
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