In this particular review, two requirements are actually used: the Mohr–Coulomb (M–C) criterion and also the multi-weak-aircraft energy criterion for shale formations. They are utilized to conduct research and attain the optimization in the failure criteria for shale–sandstone interbedded reservoirs. Thickening brokers with sand had been included into the https://vertechs21.wixsite.com/vertechs21/post/revolutionizing-well-control-in-high-pressure-high-temperature-gas-drilling-environments