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首页> 外文会议>Second Biot Conference on Poromechanics Aug 26-28, 2002 Grenoble, France >Constitutive theory for velocity dispersion in rock with dual porosity
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Constitutive theory for velocity dispersion in rock with dual porosity

机译：双孔隙岩石速度扩散本构理论

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摘要

The high frequency behavior of the bulk modulus of fluid-saturated rock can be obtained from a double-porosity constitutive model, which is a direct conceptual extension of Biot's (1941) constitutive equations and which provides additional stiffening due to unrelaxed induced pore pressures in the soft porosity phase. Modeling the stiffening of the shear modulus at high frequency requires an effective medium average over the unequal induced pore pressures in cracks of different orientations. The implicit assumptions are that pore fluid equilibration does not occur between cracks of different orientations and between cracks and porous matrix. The correspondence between the constitutive equations of Berryman and Wang (1995) and Mavko and Jizba (1991) is explicitly noted.
机译：流体饱和岩石的体积模量的高频特性可以从双孔隙本构模型获得，该模型是Biot（1941）本构方程的直接概念扩展，并且由于无松弛的诱导孔隙压力而提供了额外的加劲度。软孔隙相。对高频下的剪切模量的增强进行建模需要在不同方向的裂缝中在不相等的诱导孔隙压力上获得有效的介质平均值。隐含的假设是在不同方向的裂缝之间以及裂缝和多孔基质之间不会发生孔隙流体平衡。 Berryman和Wang（1995）的本构方程与Mavko和Jizba（1991）的本构方程之间的对应关系被明确指出。

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