... ABSTRACT The effective stress coefficient is important to describe the stress and deformation of rock. However, when shale is in the plastic stage, the mathematical expression of the effective stress coefficient is still unclear. Based on Prandtl-Reuss model, the incremental constitutive...

... the coupled model using Sneddon's analytical solution for fracture aperture distribution. Through three modeling cases, we discussed the hydraulic fracture branching mechanism: fluid leak-off at hydraulic fracture walls and the changes of Biot effective stress coefficient in the transverse direction after...

... ABSTRACT: The effective stress coefficient, introduced by Biot, is used for predicting effective stress or pore pressure in the subsurface. It is not a constant value. It is different for different types of sediment and it is stress dependent. We used a model, based on contact between...

... G and the drained bulk modulus K, are tied to elastic properties of the solid skeleton. The third coefficient, known as the Blot effective stress coefficient a, is also a property of the solid constituent. Only the last coefficient, the Biot modulus M, incorporates the fluid elastic property...