Abstract: Development and distribution of fractures in Anpeng area in Biyang depression are studied through 3D seismic interpretation, coherent analysis, visualized interpreta-tion, dual lateral logging, acoustic electric imaging and strategraphic dip logging. It is discovered that the development of fractures is closely correlated with structure, terrestrial stress and sedimentary facies. The structural fractures mainly concentrate on the axis of the nose - like structure, and the development of high - angle fractures effectively improves the seepage flow conditions in deep reservoirs. The wells including B252, B253 and B262 positioned on the favorable part of the structure have led to incremental geologic reserves of 12. 3 million tons in 2001.