鄂尔多斯盆地红河油田长81油气富集主控因素研究.pdfVIP

中 国 石 油 勘 探 第21卷　第6期 CHINA PETROLEUM EXPLORATION 2016年11月 DOI: 10.3969/j.issn.1672-7703.2016.06.0010 鄂尔多斯盆地红河油田 长81 油气富集主控因素研究 张 颖 张海涛 （中国石化华东油气分公司） 摘 要：利用岩心、测井、录井、有机地球化学及试油生产资料，从烃源条件、储集条件、盖层条件、源储接触 关系 4 个方面，分析了红河油田延长组长 81 亚油层组油气富集主控因素。研究区油藏类型以岩性油藏为主，主力烃 源岩为长 7 底部张家滩页岩，有机质类型以 I 型为主，TOC 为 15% 左右，分布范围广，为油藏形成提供了物质基础 及运移动力。研究区长 81 储层属低孔、超低渗储层，沉积作用、成岩作用及微裂缝的改造作用共同控制储层物性， 进而影响含油性。长7中上部厚层泥岩形成物性与超压封闭盖层，为油藏提供了良好的保存条件。长7底部张家滩页 岩与长8 储层直接大面积接触、“面状”供烃，是长8 油气富集的关键。 1 1 关键词：油气富集主控因素；长81 亚油层组；红河油田；鄂尔多斯盆地 中图分类号：TE112　　　　　文献标识码：A Main controlling factors of hydrocarbon accumulation in Chang 8 reservoir in 1 Honghe oilfield, Ordos Basin Zhang Ying, Zhang Haitao (Sinopec East China Oil Gas Company) Abstract: Based on core, wireline logging, mud logging, organic geochemical and production testing data, the main controlling factors of hydrocarbon accumulaiton in the Chang 81 reservoir of Yanchang Formation in the Honghe oilfield were analyzed from the aspects of source rock, reservoir, cap rock and source-reservoir assemblage. The results show that lithologic oil reservoirs are dominant in the study area. The principal source rock is acted by the Zhangjiatan shale at the bottom of Chang 7 Formation, where Type I organic matter is predominant with TOC of about 15%. This widely distributed source rock provides both material basis and migration dynamics for the formation of oil