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以勘探程度较低的海外河潜山为研究对象,分析了区域构造特征,并利用岩心分析、测井、地层倾角等多种资料,综合研究了海外河变质岩潜山的储层特征。系统分析了潜山岩石类型和特征、岩性的测井响应特征、储集空间类型及油水关系等多种因素。取得了海外河潜山存在多种岩性组合、地层呈层状分布、可形成储隔层交互分布、油气沿深大断裂向潜山内幕运移并在裂缝高密集带聚集成藏的认识,揭露了潜山内幕油藏发育情况,对深化海外河潜山勘探具有重要意义。
Based on the analysis of regional tectonic features and the overseas exploration of buried hills with low exploration level, the reservoir characteristics of overseas river metamorphic buried hills are synthetically studied by using a variety of data such as core analysis, logging and dip angle. We systematically analyzed the rock types and characteristics of buried hills, the logging response characteristics of lithology, the types of reservoir space and the relationship between oil and water. A variety of lithologic assemblages have been found in the buried hills of overseas rivers. The strata are stratiformly distributed, which can lead to the interaction distribution of the reservoirs, the migration of oil and gas along the deep faults to the inside of the buried hill and the accumulation of reservoirs in high-concentration fractures. It is of great significance to reveal the development of buried hill reservoir and deepen the exploration of buried hill in overseas river.