The Biot Coefficient for a Low Permeability Geomaterial with a Heterogeneous Fabric

The paper describes a research methodology that can be adopted for estimating the Biot coefficient for a low permeability rock that has a heterogeneous internal fabric. Experimental techniques that address the requirements for a representative volume element can be combined with theoretical developments for multiphasic elastic materials to develop bounds for the Biot coefficient. The theoretical developments are used to estimate the Biot coefficient for a heterogeneous argillaceous limestone.