On the preferential flow patterns induced by transverse isotropy and non-Darcy flow in double porosity media

摘要: Abstract Fluid flow in isotropic porous media with one porosity scale is a well understood process and common scenario numerous simulations published the literature. However, there exists class of materials that exhibit two scales strong permeability contrast between scales. Examples such are aggregated soils fractured sedimentary rocks as shale. In rocks, fluid could through micro-fractures at larger nanometer-size pores rock matrix smaller scale. this paper, we shall refer to nanopores, respectively. Due preferentially oriented rock, predominantly direction discontinuities, resulting an anisotropic pattern We idealize material transversely medium respect flow. addition, nanopores shale so small Darcy’s law may not hold To better understand impact non-Darcy on overall pattern, present hydromechanical model for accommodates both transverse isotropy Even though study motivated by properties, discussion revolves around generic whose characteristics similar those The overarching goal paper impacts material.