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    准噶尔盆地南缘中段异常压力分布及影响因素

    罗晓容 肖立新 李学义 张立强 曾治平 王兆明

    罗晓容, 肖立新, 李学义, 张立强, 曾治平, 王兆明, 2004. 准噶尔盆地南缘中段异常压力分布及影响因素. 地球科学, 29(4): 404-412.
    引用本文: 罗晓容, 肖立新, 李学义, 张立强, 曾治平, 王兆明, 2004. 准噶尔盆地南缘中段异常压力分布及影响因素. 地球科学, 29(4): 404-412.
    LUO Xiao-rong, XIAO Li-xin, LI Xue-yi, ZHANG Li-qiang, CENG Zhi-ping, WANG Zhao-ming, 2004. Overpressure Distribution and Affecting Factors in Southern Margin of Junggar Basin. Earth Science, 29(4): 404-412.
    Citation: LUO Xiao-rong, XIAO Li-xin, LI Xue-yi, ZHANG Li-qiang, CENG Zhi-ping, WANG Zhao-ming, 2004. Overpressure Distribution and Affecting Factors in Southern Margin of Junggar Basin. Earth Science, 29(4): 404-412.

    准噶尔盆地南缘中段异常压力分布及影响因素

    基金项目: 

    国家重点基础研究发展规划项目 G1999043310

    国家自然科学基金项目 40072045

    详细信息
      作者简介:

      罗晓容(1964-), 男, 研究员, 博士生导师, 主要从事为油气地质、盆地模拟方法及盆地流体动力学研究. E-mail: xrxuluo@public.bta.net.cn

    • 中图分类号: P618.130

    Overpressure Distribution and Affecting Factors in Southern Margin of Junggar Basin

    • 摘要: 准噶尔盆地南缘地区盆地演化时间长, 近期构造活动剧烈, 构造应力场复杂, 地层异常压力高且分布极不规律, 对构造的形成演化及对油气的成藏过程影响极大.据实测资料和间接估算数据所展示的地层压力分布特征, 分析了砂砾岩地层和泥岩地层在压力成因和分布等方面的差异, 从不同渗透性地层内压力形成的机制和分布特征的角度讨论了控制和影响现今压力分布的地质因素.准噶尔盆地南缘存在的极高地层压力是在压实作用、构造挤压作用所形成的地层高压背景下, 叠加了近期因断裂活动和背斜构造快速形成所引起的他源高压而形成的.沉积相带分布、压实作用、构造应力、地层的形变和断裂的活动过程等都明显地影响了压力的演化和分布.

       

    • 图  1  研究区位置及构造分区

      Ⅰ.山前推举带; Ⅱ.第二排背斜带; Ⅲ.第三排背斜带

      图  2  准噶尔盆地南缘典型地质剖面显示出三排构造带的特征(吴晓智等, 2000)

      Fig.  2.  A typical geological section in NS direction, showing the tectonic characteristics of three structure zones (Wu et al., 2000)

      图  3  准南缘部分井中测得的地层压力

      实心小圆点为RFT测点, 星形符号为DST测点

      图  4  准噶尔盆地南缘代表性井中的压实曲线及压力纵向分布

      Fig.  4.  Compaction curves and pressure distribution in some representative profiles from boreholes in south margin of Junggar basin

      图  5  准噶尔盆地南缘紫泥泉子组沉积相分布

      Fig.  5.  Facies of Ziniquanzi Formation in south margin of Junggar basin

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    • 收稿日期:  2004-03-18
    • 刊出日期:  2004-07-25

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