Aiming at the problems of complex mineral composition, ambiguous facies boundary, diversified types of reservoir space, serious heterogeneity and difficult to establish reservoir forming model in intrusion rock and its baked contact metamorphic bolts of the north slope of Gaoyou Sag, at the base of the analyses of microscope, core,well logging facies and log interpretation, the facies belt division and reservoir characteristics studies are conducted for the multiple period intrusion rock and its contact metamorphic belts. The results show that the intrusion body can be divided into center facies, edge facies and outside facies from inside to outside. Different types of reservoir space are well developed in above different facies belts. Among them, reservoir types are best developed in edge-facies belt, but their heterogeneities are the most serious; the differential of the reservoir properties is not only controlled by facies belts, rock types and the grade of metamorphism, but also by the thickness, size, invasion angle,depth and type of the intrusive rocks and moreover the type of the original rock. As a whole, the physical properties of edge facies are the best, while those of the center facies are the worst, the outside facies is middle, and the furhermore the physical properties of the upper intrusion rock are better than those of the lower.%针对侵入岩及其烘烤接触变质带矿物组分复杂、相带边界不明显、储层空间类型多样化、非均质性强、成藏模式难以建立的难题,在镜下观察、岩心分析、测井相分析、测井解释的基础上,对高邮凹陷北斜坡区存在的多期次侵入岩及其接触变质带进行了相带划分和储层特征研究.结果表明:侵人体由内向外分为中心相、边缘相和边外相,不同相带内发育不同的储层空间类型,以边缘相带内储层类型发育最为丰富,但非均质性最强;储层物性的差异不仅受控于相带、岩石类型和变质程度,同时也与侵入岩的厚度、规模、侵入角度、深度和原岩类型有关.总体上,边缘相物性最好,中心相最差,边外相中等,且上套侵入岩物性好于下套.
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