As the confining strain increases, the increase in resistance to longitudinal crack propagation brings about a gradual transition of shale failure manner from longitudinal to inclined shear failure that reflects an escalation in rock plasticity. If the confining pressure reaches 30 MPa, there remain area shear microcracks across the https://jaredokhdy.bmswiki.com/6141762/the_2_minute_rule_for_wellbore_stability_issues