| 鄂尔多斯盆地城华地区长33油组油气富集的控制因素 |
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| 引用本文： | 窦伟坦.鄂尔多斯盆地城华地区长33油组油气富集的控制因素[J].西安石油大学学报(自然科学版),1999(5). |
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| 作者姓名： | 窦伟坦 |
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| 作者单位： | 长庆石油勘探局钻井二处!715400. |
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| 摘 要： | 通过对研究区三叠纪延长组地层的岩性组分、沉积构造、地化特征、电测曲线变化规律和重矿物分布规律的详细研究，并结合地层在横剖面及平面上的变化特征确定了区内长３３ 油层组属于不同物源形成的三角洲沉积体，并指出三角洲平原亚相的分流河道、前缘亚相的水下分流河道及河口坝砂体是最有利的含油砂体．文中还深入探讨了三角洲沉积体系中不同沉积微相及同一沉积微相中砂体内的不同内部结构对油气储集条件和富集规律的控制作用，进而为勘探部署指明了方向
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| 关 键 词： | 鄂尔多斯盆地 三角洲沉积 河口坝 油气富集规律 水下分流河道 |
The Factors Controlling Oil gas Accumulation Law of Y 3 3 Oil bearing Formation in Chenghua Area,Eerduosi Basin |
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| Abstract: | According to the study of the lithologic composition, sedimentary structure, geochemical feature and electrical properties and the distribution laws of heavy minerals, and to the differences in formation feature on cross section and plane, it is held that Y 3 3 oil bearing formation is a deltaic deposit formed from different substances,and that the distributary channels of deltaic plain subfacies, the subaqueous distributary channels of frontal subfacies and debouch bars all are favourable oil bearing sandbodies. The control effect of the different internal structures of the sandbodies in different and the same sedimentary microfacies in the deltaic system on the oil gas accumulation law of Y 3 3 is also studied. Subject:Eerduosi Basin, deltaic deposit, debouch bar, oil gas accumulation law, subaqueous distributary channel |
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