【摘要】 舞阳、襄城凹陷下第三系为膏、盐岩相盐湖沉积。半咸水—咸水湖相、盐湖相是形成未熟—低熟油的良好环境,沉积旋回中期断坳式沉积形成了主要油源层系,其高丰度未熟烃源岩体是形成未熟—低熟油藏的物质基础,中—高孔、中—高渗碎屑岩层构成了未熟—低熟油藏的重要储集层,并发育了较好的生储盖组合,这些有利条件为舞阳、襄城凹陷形成未熟—低熟油藏提供了重要保证。指出凹陷陡坡带为背斜、断鼻型油藏分布区,还可能有混合型油藏;中部洼陷带为岩性油藏、裂隙型油藏发育区;斜坡带主要发育断鼻型油藏。更多还原

【Abstract】 The sediments of the Lower Tertiary in Wuyang and Xiangcheng subdepressions are a set of saline gypsym and salt rocksThe semisaltwater, saltwater and saline facies in the subdepressions are favorable for the formation of immature oil While the middle sedimentary cycle produces the main oilsource rock sequence,high abundance of the organic matter forms oil source base of the immature reservoir Middle to high porosity and permeability clastic rocks are the main oil and gas reservoir layers Furthermore,favorable combinations of sourcereservoirgap are developed in the Lower Tertiary All these factors allow immature oil reservoir to form in the subdepression Anticline, faultnose and, probably, compound oil reservoirs are distributed in the steep zone,and the lithologic and cranny reservoir in the central zone,and faultnose reservoir in the slope zone of the subdepression更多还原