Because the confining force will increase, the increase in resistance to longitudinal crack propagation leads to a gradual transition of shale failure method from longitudinal to inclined shear failure that demonstrates an escalation in rock plasticity. If the confining strain reaches thirty MPa, there are still local shear microcracks https://well-control23208.mywikiparty.com/2414907/not_known_details_about_rock_mechanics_in_wellbore_stability