鄂尔多斯盆地东南部中生界油气成藏条件分析  

The Analysis of Mesozoic Hydrocarbon Reservoir-Forming Condition in South-East Eerduosi Basin

作　　者：王仲应[1] 庞正宽[2] 李春玉[2] 

机构地区：[1]中原石油勘探局勘探开发科学研究院陕北项目研究室,河南濮阳市457001 [2]中原石油勘探局勘探开发科学研究院

出　　处：《断块油气田》1996年第4期9-14,共6页Fault-Block Oil & Gas Field

摘　　要：在对鄂尔多斯盆地东南部构造、沉积演化及地层特征认识的基础上，分析了该地区油气成藏的主要地质条件，认为三叠系延长组三角洲砂体是该地区油气聚集的主要场所，局部也可能发育延安组河道砂岩油气藏，由差异压实作用形成的低幅度鼻褶构造是油气富集成藏的关键因素，延长组上覆地层遭受剥蚀的程度决定了油气藏保存条件的好坏。该地区的油气分布呈“东西分带、南北分区”的格局，依据各区、带的主要特点分别提出了下步的勘探方向。Based on the structure, sedimentary evolution and stratigraphic feature; this paper analyzes the major geologic conditions of hydrocarbon reservoir-forming in South-East Eerduosi Basin,proposes that Triassic Yanchang Formation delta sandstone should be of the main hydrocarbon accumulation in this area,with locally Jurassic Yanan Formation channel sandstone reservoir. The tiny structural nose formed by differential compaction is the key factor for hydrocarbon to concentrate. Stratigraphic denudation controls the preservation condition of hydrocarbon. Meanwhile, the paper outlines the oil and gas distribution and the exploration direction in near future.

关 键 词：盆地 中生代 构造 油气藏形成 油气 分布 

分 类 号：P618.130.8[天文地球—矿床学]