Because the confining stress raises, the increase in resistance to longitudinal crack propagation brings about a gradual transition of shale failure manner from longitudinal to inclined shear failure that displays an escalation in rock plasticity. If the confining pressure reaches thirty MPa, there remain area shear microcracks around the https://getsocialselling.com/story7080077/not-known-factual-statements-about-wellbore-stability-issues