Since the confining strain raises, the rise in resistance to longitudinal crack propagation results in a gradual transition of shale failure mode from longitudinal to inclined shear failure that demonstrates an escalation in rock plasticity. Once the confining strain reaches thirty MPa, there are still community shear microcracks throughout https://vertechscom77888.wikimillions.com/601645/5_easy_facts_about_shale_wellbore_stability_described