西伯利亚地台涅帕-鲍图奥巴台背斜文德系碳酸盐岩巨型油气聚集带  

Giant Hydrocarbon Accumulation Zone of Wende Carbonate in Nepa-Botuaoba Anticline,Siberian Platform(translated by Li Guodu)

作　　者：г.г.谢明 李国都[2] 

机构地区：[1]俄罗斯科学院西伯利亚分院石油天然气地质研究所,俄罗斯新西伯利亚630090 [2]北京石油大学盆地与油藏研究中心,北京昌平102249

出　　处：《新疆石油地质》2000年第4期333-343,共11页Xinjiang Petroleum Geology

摘　　要：通过地质、构造、岩相、测井、地球化学和水文地质学等综合研究，首次在涅帕一的图奥巴台背斜中部留出叶列马－乔纳油气聚集带。该油气聚集带面积2．2×104km2，据作者估算，其石油可采储量约为20×108t，储集层是文德系的普列奥布拉任卡层。普列奥布拉任卡层全区广泛分布，岩性为生物白云岩。后者形成于相同的沉积环境并经受了类似的后生改造过程，成为孔隙型储集层。该油气聚集带属于大型岩性圈闭，成因与生物礁体有联系。该带的含油气性主要是两个地质条件决定的：首先，古构造上，在晚前寒武纪和显生宙该区一直处在涅帕－鲍图奥巴台背斜的较高部位，因此，它是烃类运移的长期指向区；其次，在该油气聚集带范围内位于普列奥布拉任卡层底部的吉拉区域遮挡层缺失，这使得烃类物质能够从下面的碎屑岩含油层系注入到普列奥布拉任卡层内。By comprehensive studies in geology, structure, lithological facies, well log, geochemistry and hydro-geology, Yelema-Jona hydrocarbon accumulation zone in middle part of Nepa-Botuaoba anticline is first discovered. This zone covers an area of 2-2×104 km2, with recoverable oil reserves of 20×108 t by the author's estimation. Wende Purieobularenka formation is as reservoir of it, which is extensively distributed in the whole area. Its bio-dolomite is formed the same depositional environment and undergone sindlar epigenetic transformation and then become porous reservoirs rocks. The zone is characterized by large-scale lithologic trap, related with hermotobiolith in its origin. The hydrocarbonbearing property is dependent on the two geological conditions:one is this area of ancient strUcture has been in higher location of Nepa-Botuaoba anticline in late Precambrian and Phanerobiotic, hence, it is a directional area for long-term hydrocarbon migraion. The other is lack of barrier bed in Jila area located in bottom of Purieobularenka formation within the scope of the hydrocarbon accumulation zone, which results in hydrocarbons materials can be able to now-up into Purieobularenka formation from beneath clastic petroliferous sequences.

关 键 词：油气聚集带 孔隙度 油气运移 石灰酸盐岩 储集层 

分 类 号：P618.130.2[天文地球—矿床学]