Abstract: The azimuth of fracture growth in fractured reservoir in Biantai buried hill were determined with paleogeomagnetism and dipmeter, the spatial distribution of fracture was studied with fractal method, and porosity and permeability were calculated with volume-density mehtod and Parsons equation.It is suggested that the reservoir in Biantai buried hill is a dual-porosity system dominated by fracture.This finding offered scientific basis for well pattern arrangement and water injection development.

Key words: Liaohe depression, Biantai oilfield, Ancient buried hill, Fracture Reservoir Porosity Permeability