In this particular study, two conditions happen to be utilized: the Mohr–Coulomb (M–C) criterion as well as the multi-weak-airplane toughness criterion for shale formations. These are definitely used to carry out study and accomplish the optimization in the failure standards for shale–sandstone interbedded reservoirs. As illustrated in Figure 9, https://well-control-operations45554.full-design.com/top-guidelines-of-rock-mechanics-in-wellbore-stability-84341583