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准噶尔盆地西北缘走滑断层特征及油气地质意义

徐怀民,徐朝晖,李震华,刘得光,陈永军,刘 巍   

  1. 中国石油大学(北京)资源与信息学院,北京 昌平 102249
  • 收稿日期:2008-06-20 修回日期:2008-06-20 出版日期:2008-06-20 发布日期:2008-06-20

Characteristics of Strike-Slip Faults in the Northwestern Margin of Junggar Basin and Their Geological Significance for Petroleum

XU Huai-min   

  1. Faculty of Resource and Information Technology, China University of Petroleum, Changping, Beijing 102249, China
  • Received:2008-06-20 Revised:2008-06-20 Online:2008-06-20 Published:2008-06-20

摘要: 准噶尔盆地西北缘前陆冲断带构造样式复杂多样,除规模较大的逆断层外,还发育一系列北西向的走滑断层。以高分辨率三维地震资料为基础,对断裂体系分析表明克拉玛依—百口泉地区的走滑断层可分为花状走滑断层和简单走滑断层两类,二者在成因、剖面特征等方面具有明显差别。研究结果认为走滑断层对油气的运聚成藏具有重要的双重控制作用,即能作为有效的运移通道,又能够起遮挡作用而形成圈闭。

Abstract: The foreland thrust belt has complex and various structural styles. Besides the large-scale reverse faults, there are a series of north-west strike-slip faults. Based on high-resolution seismic data, the foreland fault systems in the NW margin of Junggar basin were analyzed. It reveals that the strike-slip fault system of Ke-Bai area can be divided into two types, namely the flower strike-slip faults and the simple strike-slip faults, which have obvious differences in genesis and section features.The strike-slip faults have dual influence on hydrocarbon migration and accumulation. They can not only be effective migration channels for petroleum, but also can seal petroleum.