Fractures quite develop in the Lower Triassic Feixianguan-3 carbonate reservoir that is the target for petroleum exploration in Jiannan area in the east of Sichuan Basin. In accordance with data from 28 producing wells, the extent of development and distribution of the fractures associated with faulting and/or folding is predicated by using fractal and curvature methods. According to the result of comprehensive evaluation, it is suggested that development of the fractured reservoir is preferably positive in correlation with hydrocarbon accumulation at this area. This method of evaluation is proved to be reasonable and believable. The reservoir area favorable for exploration is also suggested.