On this review, two standards have been utilized: the Mohr–Coulomb (M–C) criterion as well as the multi-weak-airplane toughness criterion for shale formations. These are used to carry out investigation and reach the optimization of the failure criteria for shale–sandstone interbedded reservoirs. Lamellar shale oil reservoirs create millimeter-to-centimeter-scale siltstone and https://vertechscom70246.wikipresses.com/7567875/wellbore_stability_in_drilling_secrets