Mud leakage risk assessment method and device

The invention relates to the technical field of oil exploration and development, in particular to the technical field of mud leakage risk assessment methods and devices. The method comprises the following steps: 1) extracting pre-stack and post-stack seismic data volume frequency information, calculating the extension length resolution of a used data volume for a fault-fracture system, and respectively extracting post-stack coherence isogeometric attributes, high-precision curvature along the layer and pre-stack fluctuation mechanical attributes; 2) respectively meshing post-stack coherence geometric attributes, high-precision curvature attributes along the layer and pre-stack fluctuation mechanical attributes, normalizing attribute data, and gradually describing a fracture crack distribution profile by using a conditional clustering method; and 3) overlapping a distribution diagram of which the fracture longitudinal extension length is greater than lambda/4, a fracture distribution diagram of which the longi