The paper mainly evaluates and analyzes the rock mechanical property,the ground stress field, the fracture pressure and the caving pressure section of whole layers( land facies mainly) at Heba structure in Northeastern-Sichuan by means of a great quantity of rock mechanical data combined with rock acoustic emission method,differential strain method and logging method.

Using real well log data from Mobei area in hinterland of Junggar basin,a fault model was developed,modeling seismic response features of minor fault throw fractures in different exploratory stages,outlining the factors af-fecting recognition of minor faults during seismic acquisition and processing.