Abstract:Detection of fractured oil/gas reservoir is difficult problem generally recognized by current petroleum industry.According to self-similarity of fractured system and using full 3-D P-wave data,the data presented a new method for detection of fracture orientation and density by using mufti-azimuth 2-D fractal technique.Its processing flow is as follows:①enlarging bin processing,forming super CMP gather having 512 fold;②forming 9 azimuth gathers;③NMO correction is carried out separately;④labeling amplitude and AVO stack according to azimuth;⑤detection and analysis of attributes according to azimuth.The applied results of the method to real data showed the method has advantages of good stability and high resolution when used for detection of fracture,having good applied prospect in the domain of oil/gas exploration and development.