Taking the Archean metamorphic buried-hill oil reservoir as the object of studies, ain-depth studies of the accumulation features have been conducted through the application of cores, well logging, mud logging, production test and seismic data. The regional structural feature, the rock type and lithologic distribution pattern of buried hill, reservoir space type, occurrence and development pattern of fractures have been analyzed systematically. The study finds that lithology of the metamorphic reservoirs in this area includes plagiogneiss and two-feldspar gneiss; types of reservoir space include facture, emposieu and micropore, with fractures as the main reservoir space; the fracture type belongs to the structural fracture under the control of rift system, with the trend of mainly Northeast-Southwest and secondly Northwest-Southeast. According to the study of mechanism model on the basis of real drilling well data, it is considered that when the angle between the directions of well array and fractures is 22. 5°-45°, the development effect is the best. Meanwhile, dynamic characteristics of real drilling well data have verified this research result. This result can effectively direct the deployment of development well location in JZ25-1S Buried-Hill oil reservoir.%以JZ25-1S太古界变质岩潜山油藏为研究对象,利用岩心、测井、录井、生产测试、地震等资料对储集特征进行了深入研究.系统分析了区域构造特征、潜山岩石类型及岩性分布特征、储集空间类型、裂缝的产状及发育规律.研究发现,该区的变质岩储层岩性包括斜长片麻岩和二长片麻岩；储集空间类型包括裂缝、溶蚀孔和微孔隙,其中以裂缝为主；裂缝类型为受断裂系统控制的构造缝,走向以北东—南西向为主,其次为北西一南东向.通过对基于实钻井资料的机理模型的研究,认为井排方向与裂缝主走向呈22.5°～45°开发效果最好,实钻开发井的动态特征验证了这一研究结果.该研究有效地指导了JZ25-1S潜山油藏开发井位的部署.
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