石油与天然气地质 ›› 2016, Vol. 37 ›› Issue (3): 381-386.doi: 10.11743/ogg20160310

• 油气地质 • 上一篇    下一篇

中亚北乌斯丘尔特盆地油气富集规律与勘探潜力

余一欣1,2, 殷进垠3, 郑俊章4, 李锋5, 徐小龙1,2, 吴航1,2, 于笑2   

  1. 1. 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;
    2. 中国石油大学(北京) 地球科学学院, 北京 102249;
    3. 中国石化 石油勘探开发研究院, 北京 100083;
    4. 中国石油 勘探开发研究院, 北京 100083;
    5. 中国地质调查局 油气资源调查中心, 北京 100029
  • 收稿日期:2015-01-03 修回日期:2015-12-11 出版日期:2016-06-08 发布日期:2016-06-22
  • 第一作者简介:余一欣(1977—),男,博士、副教授,盆地分析和构造地质学。E-mail:yuxin0707@163.com。
  • 基金项目:
    国家自然科学基金项目(41472117, 41125010);国家科技重大专项(2011ZX05031-001, 2011ZX05029-002)。

Hydrocarbon accumulation rules and exploration potential in the North Ustyurt Basin

Yu Yixin1,2, Yin Jinyin3, Zheng Junzhang4, Li Feng5, Xu Xiaolong1,2, Wu Hang1,2, Yu Xiao2   

  1. 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
    2. College of Geosciences, China University of Petroleum, Beijing 102249, China;
    3. Petroleum Exploration & Production Research Institute, SINOPEC, Beijing 100083, China;
    4. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    5. Oil & Gas Survey, China Geological Survey, Beijing 100029, China
  • Received:2015-01-03 Revised:2015-12-11 Online:2016-06-08 Published:2016-06-22

摘要: 根据北乌斯丘尔特盆地主要地质特征及已发现油气田的分布特点,总结了油气富集规律及其主控因素,并分析了勘探潜力。受油气来源及烃源岩沉积环境差异的影响,北乌斯丘尔特盆地的油气分布具有“西油东气”的特点,而且优质储层的发育决定了石油和天然气分别富集于中侏罗统和始新统储层中,良好的运移通道则是北布扎奇隆起油田形成的重要条件。北布扎奇隆起中生界的勘探目标主要是发育于隆起北坡及顶部的拉长型断背斜构造,古生界巴什基尔阶和阿赛尔阶碳酸盐岩储层的勘探潜力也不容忽视。盆地中部和东部地区的侏罗系和始新统储层潜力较有限,但东北部的下白垩统可能是一个新的勘探层系,东南部石炭系维宪阶碳酸盐岩储层在局部地区也具有一定潜力。

关键词: 运移通道, 沉积环境, 储层, 烃源岩, 北乌斯丘尔特盆地, 中亚

Abstract: Based on the integrated analysis of key geological features and distribution of oil and gas fields in the North Ustyurt Basin,central Asia,this paper focuses mainly on hydrocarbon accumulation rules,their controlling factors,and exploration potential in the basin.Because hydrocarbons are originated from multiple source rocks and depositional settings of source rocks vary,hydrocarbon distribution in the North Ustyurt Basin is characterized by‘oil accumulations in the west and gas in the east’.Oil and gas accumulated respectively in the middle Jurassic and Eocene reservoirs with high-quality.Favorable migration paths have played a key role in hydrocarbon accumulation in the North Buzachi Uplift,where the most favorable traps in the Mesozoic are the elongated faulted anticlinal structures in the northern part and top of the Uplift.Exploration potential in the Paleozoic Bashkirian and Asselian carbonate reservoirs also cannot be ignored.In the middle and eastern part of the basin,the Jurassic and Eocene reservoirs are of limited potential,but the Lower Cretaceous in the northeastern region may become a new exploration target.In addition,it is possible to discover hydrocarbon in the Carboniferous Visean reservoirs in the southeastern part of the Basin.

Key words: migration path, depositional environment, reservoir, source rock, North Ustyurt Basin, central Asia

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