Method for predicting micro fault distribution rules of complex fault-block oilfields

The invention provides a method for predicting micro fault distribution rules of complex fault-block oilfields. The method for predicting micro fault distribution rules of complex fault-block oilfields comprises following steps: S1. simulating a difference value of a maximum plane primary stress and a minimum plane primary stress, and simulating and predicting minor fault development area through the plane primary stress difference; S2. simulating the distribution of plane shear stress and simulating and predicting the dominant trend of the minor fault through the plane shear stress; S3. simulating the distribution of cross section shear stress, and simulating and predicting the dominant trend of the minor fault through the cross section shear stress; S4. on the basis of above prediction, in combination with theory analysis of fault mechanical causes, establishing an integrated prediction model for micro fault distribution geology. The core of the method for predicting micro fault distribution rules of comple