鄂尔多斯盆地长7段源储组合特征与油气成藏模式  

Characteristics of Source-reservoir Assemblage and Hydrocarbon Accumulation Model of Chang 7 Member in Ordos Basin

作　　者：高岗[1,2] 梁晓伟[3,4] 朱康乐 淡卫东[3,4] 孙明亮[1,2] 尤源[3,4] 冯胜斌[3,4] GAO Gang;LIANG Xiaowei;ZHU Kangle;DAN Weidong;SUN Mingliang;YOU Yuan;FENG Shengbin(College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing 102249,China;Exploration and Development Research Institute of PetroChina Changqing Oilfield Company,Xi an 710018,Shaanxi,China;National EngineeringLaboratory for Low Permeability Oil and Gas Field Exploration and Development,Xi an 710018,Shaanxi,China)

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国石油长庆油田分公司勘探开发研究院,陕西西安710018 [4]低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《西北地质》2021年第3期198-205,共8页Northwestern Geology

基　　金：国家科技重大专项“鄂尔多斯盆地致密油资源潜力、甜点预测与关键技术应用”(2016ZX05046005002)。

摘　　要：依据不同单井黑色页岩、暗色泥岩与储集层的垂向叠置特征,将鄂尔多斯盆地长7段源储组合划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ和Ⅵ6种类型。不同类型源储组合的分布区域存在差异。Ⅰ、Ⅱ和Ⅳ型源储组合主要分布在黑色页岩发育范围之内,储集层含油性普遍较好。Ⅲ、Ⅴ和Ⅵ型源储组合主要分布在黑色页岩发育范围之外,储集层含油性在局部地区较好。黑色页岩分布区内的油气连续性分布较好,其中黑色页岩生成的油气主要为垂向强充注,暗色泥岩生成的油气主要为就近运移充注;在缺乏黑色页岩发育的三角洲前缘地区,油气以弱充注为主,其中暗色泥岩内的油气就近运移聚集,黑色页岩内的油气主要进行长距离侧向运移,油气在局部地区富集。the source reservoir assemblage of the Chang 7 Member in Ordos Basin is divided into six types according to the characteristics of vertical superposition of black shale,dark mudstone and reservoirs in different wells.TypeⅠ,ⅡandⅣsource-reservoir assemblages are mainly distributed within the development range of black shale,with high oil and gas enrichment.TypeⅢ,Ⅴ,andⅥsource-reservoir assemblages are mainly distributed outside the development range of black shale,in which oil and gas are only locally enriched.The continuity of oil and gas is good in the black shale distribution area.the oil and gas from the dark shale are strong charged,and that from the dark mudstone are charged from nearby areas.In the delta front area where black shale is lacking,the charging is weak.Oil and gas from the dark mudstone migrated and accumulated,while those from the black shale migrated laterally over a long distance,and concentrated locally.

关 键 词：源储组合 油气成藏模式 黑色页岩 长7段 鄂尔多斯盆地 

分 类 号：P618.13[天文地球—矿床学]