石油学报 ›› 2004, Vol. 25 ›› Issue (2): 30-35.DOI: 10.7623/syxb200402006

• 地质勘探 • 上一篇    下一篇

坳陷湖盆坡折带特征及其对非构造圈闭的控制

刘豪1,2, 王英民1,2, 王媛2   

  1. 1. 石油大学盆地与油藏研究中心, 北京, 102249;
    2. 石油天然气成藏机理教育部重点实验室, 北京, 102249
  • 收稿日期:2003-01-20 修回日期:2003-04-27 出版日期:2004-03-25 发布日期:2010-05-21
  • 作者简介:刘豪,男,1974年2月生,2002年获石油大学盆地与油藏研究中心博士学位,现在石油大学(北京)博士后流动站工作,主要研究方向为层序地层学、油藏描述等.E-mail:lh-wy@bjpeu.edu.cn
  • 基金资助:
    国家自然科学基金项目(40272057)"大型坳陷湖盆坡折带的构造-古地貌-剥蚀沉积响应耦合"资助.

Characteristics of slope breaks and their control on atectonic traps in downwarped lake basin

LIU Hao1,2, WANG Ying-min1,2, WANG Yuan2   

  1. 1. Basin and Reservoir Research Center, University of Petroleum, Beijing 102249, China;
    2. Key Laboratory for Hydrocarbon Accumulation, Ministry of Education, Beijing 102249, China
  • Received:2003-01-20 Revised:2003-04-27 Online:2004-03-25 Published:2010-05-21

摘要: 对准噶尔盆地西北缘地区侏罗系层序地层学的研究表明,在该地区发育多级坡折带.按其成因机制可分为断裂和挠曲坡折带,根据自然地理位置又可将坡折带分为盆缘坡折带和盆内坡折带两大类.构造运动是坡折带发育的主控因素,而且其规模与构造运动大小相关.多级坡折带对非构造圈闭的控制主要表现为:①非构造圈闭紧邻多级坡折带发育,沿着坡折带呈串珠状展布;②非构造圈闭在纵向上发育具有继承性;③非构造圈闭发育的类型随着坡折带和坡折带所处的地理位置的不同而有所不同;④同一个坡折带在横向上存在较大的变化,可形成不同类型的非构造圈闭;⑤多级坡折带的存在导致了在盆地的不同地理位置发生不同的沉积剥蚀响应,非构造圈闭的生、储、盖组合较好;⑥坡折带控制下的非构造圈闭的含油性条件优越.

关键词: 准噶尔盆地, 侏罗系, 坳陷湖盆, 层序地层学, 坡折带, 非构造圈闭

Abstract: The study on the sequence stratigraphy in Jurassic system of the northwestern area of Junggar Basin shows that there mainly developed multiple slope breaks.Those slope breaks can be divided into faulted slope break and bending slope break according to their genetic types and can also be divided into basin margin slope break and inner-basin slope break according to their natural geographical positions.The atectonic movement is the dominant factor for developing the slope breaks,and the scale of slope breaks intimately relates with the size of tectonic movement.The controls of multiple slope breaks on tectonic traps have following features.The atectonic traps were developed near the multiple slope breaks and distributed in beads-shape along the slope breaks.In the longitudinal direction,the development of atectonic traps was characterized by the inheritance.The different slope breaks and their different geographical positions resulted in the different development types of atectonic traps.Any slope break could form different kinds of atectonic traps,owing to its great variation laterally.The existence of multiple slope breaks resulted in the different responses of erosion and deposition in the different geographical positions of Junggar Basin.The source-reservoir-seal assemblage of atectonic traps is fine.The atectonic traps controlled by slope breaks had very favorable oil-bearing conditions.

Key words: Junggar Basin, Jurassic System, downwarped lake basin, sequence stratigraphy, slope break, atectonic trap

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