新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (4): 403-405.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地西北缘乌夏断裂带断裂活动与油气运聚

曲江秀1, 邱贻博1, 时振峰2, 高卫红3   

  1. 1.中国石油大学 地球资源与信息学院, 山东 东营 257061;
    2.中国石油长庆油田分公司 勘探部, 西安 710021;
    3.中国石油 新疆油田分公司 勘探公司, 新疆 克拉玛依 834000
  • 收稿日期:2007-03-26 出版日期:2007-08-01 发布日期:2020-07-31
  • 作者简介:曲江秀(1974-), 女, 山东荣成人, 讲师, 博士, 石油地质,(Tel) 0546-8393483(E-mail) qujxiu@163.com.

Fault Activities and Hydrocarbon Accumulation in Wu-Xia Fault Belt in Northwestern Margin of Junggar Basin

QU Jiang-xiu1, QIU Yi-bo1, SHI Zhen-feng2, GAO Wei-hong3   

  1. 1. Faculty of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong 257061, China;
    2. Department of Exploration, Changqing Oilfield Company, PetroChina, Xi'an, Shaanxi 710021, China;
    3. Department of Exploration, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2007-03-26 Online:2007-08-01 Published:2020-07-31

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摘要： 准噶尔盆地西北缘冲断带东段的乌夏断裂带是西北缘构造活动最为强烈的地区。由于多期的构造活动,断裂的平面和剖面形态呈现出复杂化和多样性。在垂向上,以侏罗系底界为界,将断裂划分为深层断裂体系和浅层断裂体系,由于深、浅层断裂体系活动时间和活动强度的差异,对油气成藏的控制作用也有明显的不同。从断裂的活动期与油气的运聚期配置关系来看,三叠纪至侏罗纪的断裂活动与烃源岩的主生排烃期相匹配,对油气的运聚产生了重要的影响。断裂与不整合构成“之”字型运移网络,使油气从凹陷中心向盆地边缘、从深层向浅层呈台阶式运聚成藏。

关键词: 准噶尔盆地, 乌尔禾-夏子街断裂带, 断裂活动, 油气运聚, 断裂体系, 运移网络

Abstract: Wu-Xia fault belt is located in the eastern part of thrust zone in northwestern margin of Junggar basin, which was tectonically the most active area here. The multistage tectonic activities allowed the lateral and vertical styles of the fault belt to be of complexity and diversity. It is vertically divided into the deep fault system and the shallow fault system bounded by the bottom of Jurassic. Because of differences in active period and intensity of the fault, the deep and shallow fault systems showed obvious differences in controlling the hydrocarbon accumulation. The Triassic-Jurassic fault active period matched well with the hydrocarbon generation and expulsion periods and had an important effect on hydrocarbon migration and accumulation. The active faults and the unconformities form the Z-like transportation networks, resulting in stepped hydrocarbon migration and accumulation from deep strata to shallow strata and from sag centers to basin margins in this region.

Key words: Junggar basin, Wuerhe-Xiazijie fault belt, fault activity, hydrocarbon migration and accumulation, fault system, migration network

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