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In this article we present a model-based interpretation algorithm to predict attenuation signatures associated with a reservoir's structure and its intrinsic properties. Scattering losses are caused by multiple reflections associated with the impedance contrast between different reservoir boundaries. Intrinsic losses are due to the fluids in the reservoir, the rock fabric, and the anisotropy due to vertical fractures. Because amplitude data are sensitive to these reservoir characteristics, we calculate the wave attenuation response of the reservoir in the frequency range of surface seismic, VSP, crosswell seismic, and borehole sonic. A model of a plane wave traveling in a poroelastic multilayer earth medium allows us to include anisotropy. The multilayer part of the model simulates elastic scattering; the poroelastic part of the model simulates fluid-flow effects in the reservoir; and the anisotropic part of the model simulates reservoir fractures.
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Parra et al. (2002) studied this question.
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