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随着油气勘探和研究工作的深入,发现油气藏的类型日益丰富,弄清不同类型油气聚集的概念内涵、外延和类属,是开展深入研究和应用的基础。详细讨论了岩性油气藏、地层油气藏的内涵和属类,及其与连续型油气聚集的区别,指出了源外的连续型油气聚集必须具备大面积非常规(致密)储层、广覆式优质烃源岩和“源—储”上下紧密叠置、无缝对接这3条充分必要条件,以及圈闭形成条件和渗流聚集方式2项鉴别标志(本质属性)。
With the deepening of oil and gas exploration and research, it is found that the types of oil and gas reservoirs are increasingly rich. It is the basis for in-depth research and application to understand the connotation, denotation and gens of different types of hydrocarbon accumulation. The connotation and classification of lithologic reservoirs and stratigraphic reservoirs are discussed in detail, and the differences between them and continuous hydrocarbon accumulations are pointed out. It is pointed out that the continuous hydrocarbon accumulations outside the source must possess large-area unconventional (tight) reservoirs, High-quality source rock and “source-reservoir” are closely superposed and connected seamlessly. These three necessary and sufficient conditions, as well as the identification criteria (essential attributes) of trap formation conditions and the seepage accumulation mode.