Abstract:After analyzing the preconditions,application,advantages and disadvantages of techniques for predicting fractures in granite buried hill reservoirs on the basis of a large number of references,it is concluded that: ①The structure-oriented filtering technique can improve the signal-to-noise ratio of post-stack seismic data,and the seismic data with WWH (wide frequency,wide azimuth and high density) can significantly improve the imaging accuracy of the top and inside of buried hills; ②Coherent volume is not affected by interpretation errors,but its description accuracy is lower,and it can only predict faults with discontinuous events; ③Curvature attributes can only identify the fault with folded formations on both sides of it; ④Ant bodies attributes can qualitatively identify small faults and large fractures,and combining with prestack azimuth anisotropy,they can quantitatively predict large and medium fracture zones; ⑤Compared with traditional post-stack attributes such as coherence,the maximum likelihood volume is accurate to predict fractures,and it can predict the interior of a fault zone and a dense fracture area,but it can’t provide the information about trunk faults; ⑥The anisotropic strength based on statistical data is more accurate than that based on ellipse fitting.
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