本文认为，丰富的油源和与之匹配的大面积发育的断续砂岩透镜体，是形成大面积岩性油藏的基本条件；凹陷中的大型鼻状构造和凹中脊具有控制沉积、诱导油气运移，并使之富集成带的作用。而起主导作用的砂岩透镜体和构造格局应是研究的主要对象。文中提到的一些具体作法，对隐蔽油气藏的勘探是有一定的参考价值的。 This paper argues that abundant oil sources and their matched large-area intermittent sandstone lenses are the basic conditions for the formation of large-area lithologic reservoirs. The large nasal structures and concave ridges in the sag have controllable deposition and induction Oil and gas migration, and to enrich the role of belt. The dominant sandstone lens structure and structure should be the main object of study. Some specific practices mentioned in the article have certain reference value for the exploration of subtle reservoirs.