Shale gas formation drilling risk assessment method, device and equipment

The invention relates to the technical field of petroleum industry drilling engineering, in particular to a shale gas formation drilling risk assessment method, device and equipment. The method comprises the following steps: establishing a rock mechanical parameter calculation model and a ground stress parameter calculation model of a target stratum; selecting a rock failure criterion according to the rock mechanical parameter calculation model, the ground stress parameter calculation model, the wellbore collapse degree of the drilled well in the target stratum and the drilling fluid density of the drilled well; determining a construction risk level corresponding to the wellbore collapse degree of the drilled well according to the construction condition of the drilled well; and determining the drilling risk corresponding to the drilling fluid density of the to-be-drilled well in the target stratum according to the construction risk grade and the rock failure criterion. Through the embodiment of the invention,