舞阳、襄城盐湖盆地未熟-低熟油成藏模式  

IMMATURE OIL RESERVOIR FORMING MODEL IN WUYANG AND XIANGCHENG SALINE BASIN,HENAN,CHINA

作　　者：赵全民[1] 刘喜林[2] 范传军[3] 乔桂林[2] 肖学[2] 何运平[2] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]河南石油勘探局,河南南阳473132 [3]江汉石油管理局,湖北潜江433124

出　　处：《地质科技情报》2002年第4期23-26,共4页Geological Science and Technology Information

基　　金：河南石油勘探局科技项目(1999-1064)

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。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

关 键 词：舞阳凹陷 襄城凹陷 盐湖 未熟-低熟油 成藏模式 沉积环境 成藏条件 

分 类 号：P618.130.2[天文地球—矿床学] T[天文地球—地质学]