With this research, two requirements are employed: the Mohr–Coulomb (M–C) criterion plus the multi-weak-aircraft energy criterion for shale formations. These are used to carry out exploration and realize the optimization of the failure criteria for shale–sandstone interbedded reservoirs. The PPW criterion far better reveals the strength of shale with https://vertechs77764.blog-a-story.com/23565597/what-does-shale-wellbore-stability-mean