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Frequency-dependent P-wave Reflection Coefficients for a Double Porosity Reservoir
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 73rd EAGE Conference and Exhibition incorporating SPE EUROPEC 2011, May 2011, cp-238-00421
- ISBN: 978-90-73834-12-5
Abstract
The effective Biot governing equations and the boundary conditions are applied to derive the exact frequency dependent reflection coefficients of normal incident (NI) P-waves through a pure elastic medium on the interface of a effective Biot media (DPDP media). The frequency dependence of the reflection coefficients is calculated for three models; dim-out interface, phase-shift interface and bright-spot interface. We show that the simple acoustic reflection coefficients, without consideration of the slow P-waves, have sufficient accuracy compared with the exact DPDP solution over the typical seismic frequency range.