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本文在对渤海湾盆地新生代火成岩分布、已发现火成岩油气藏特征研究的基础上,根据构造演化、火成岩分布、岩浆活动的特点,将盆地新生代岩浆活动史划分为两大旋回,并将火成岩油气藏分为抬升淋滤型、埋藏溶蚀型、构造裂缝型、火山碎屑岩型、火成岩体侧向遮挡型、接触变质型和超覆披覆型等7 类。在此基础上,结合实例详细探讨了各类油气藏在地层剖面中所处的位置以及其岩性特点、储层物性特征等。
Based on the study of the distribution of Cenozoic igneous rocks in the Bohai Bay Basin and the discovery of characteristics of igneous reservoirs, based on the characteristics of tectonic evolution, igneous rock distribution and magmatism, the Cenozoic magmatic activity history of the basin is divided into two major cycles and the igneous rocks There are seven types of reservoirs: uplifted leaching, buried dissolution, tectonic fracture, volcaniclastic type, lateral igneous type of igneous rock, metamorphic metamorphism and overcoating. On this basis, with examples, the location of various types of oil and gas reservoirs in the stratigraphic section as well as their lithologic features and physical properties of reservoirs are discussed in detail.