Evolution of anisotropic permeability of fractured sandstones subjected to true-triaxial stresses during reservoir depletion

Reservoir rock masses contain numerous fractures caused by regional tectonic movements or hydraulic fracturing operations. An accurate understanding of the evolution of permeability of fractured reservoir rocks during depletion is thus crucial for evaluating the long-term performance of producing wells. Although extensive study on this issue has been conducted, the anisotropic permeability of fractured reservoir rock under in-situ true-triaxial...