Combining Analysis of Random Elastic Polycrystals with Poroelasticity for Granular Composites having Porous Grains andnFluid-Filled Pores.

摘要

Analysis of random polycrystals has typically been applied to solid grains of anisotropic elastic materials. Poroelastic analysis has typically been applied to otherwise isotropic systems with pores having a variety of shapes and filled with fluids. Present effort is focused on combining these two types of geomechanical analyses by treating anisotropic poroelastic grains jumbled together to form an overall polycrystalline poroelastic material. This problem is approximately twice as difficult to solve as the typical elastic polycrystal problem because the polycrystal analysis must be carried through twice: once for the drained (pore-fluid free to escape) constants, and again for the undrained (pore-fluid trapped) poroelastic constants.