Abstract:Engineering practice shows that reserves of tight fractured reservoirs of clastic rock account for a large proportion of the total reserves of low permeability reservoirs. Their researches are important for exploration and development of oil and gas. An important difficulty in exploration and development of tight fractured reservoirs of clastic rock is how to accurately predict the growth degree and distribution range of reservoir fractures. In this paper, the methods of fracture prediction for tight reservoirs of clastic rock are systematically reviewed, including geological analysis, curvature method and tectonic stress simulation, seismic fracture identification technique, log fracture identification technique and production performance analysis. It is pointed out that there are two development trends for macroscopic fracture predictions of tight reservoirs of clastic rock: the innovation in the single methods of fracture prediction and the systematical engineering method integrating advantages of different single methods for fracture prediction.