During this study, two criteria are already utilized: the Mohr–Coulomb (M–C) criterion as well as multi-weak-plane strength criterion for shale formations. These are generally used to conduct analysis and reach the optimization of the failure criteria for shale–sandstone interbedded reservoirs. Mechanical testing serves being a foundational step in identifying https://vertechs21.wordpress.com/2025/10/21/advancing-well-control-how-vertechs-is-shaping-the-future-of-safe-drilling/