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Effects of the Biot and the squirt-flow coupling interaction on anisotropic elastic waves

机译：Biot和喷流耦合作用对各向异性弹性波的影响

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摘要

Considering the velocity anisotropy of the solid/fluid relative motion and employment of the BISQ theory~[1] based on the one-dimensional porous isotropic case, we establish a two-phase anisotropic elastic wave equation to simultaneously include the Biot and the squirt mechanisms in terms of both the basic principles of the fluid's mass conservation and the elastic-wave dynamical equations in the two-phase anisotropic rock. Numerical results, while the Biot-flow and the squirt-flow effects are simultaneously considered in the transversely isotropic (TI) poroelastic medium, show that the attenuation of the quasi P-wave and the quasi SV-wave strongly depend on the permeability anisotropy, and the attenuation behavior at low and high frequencies is contrary.
机译：考虑一维多孔各向同性情况下固/液相对运动的速度各向异性和BISQ理论〜[1]的应用，我们建立了一个两相各向异性弹性波方程，同时包含了Biot和喷出机理从两相各向异性岩石中流体质量守恒的基本原理和弹性波动力学方程来看。数值结果虽然在横观各向同性（TI）多孔弹性介质中同时考虑了Biot流动和喷流效应，但表明准P波和准SV波的衰减在很大程度上取决于渗透率各向异性，而低频和高频的衰减行为则相反。

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