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    井资料高分辨率层序地层学

    谢寅符 李洪奇 孙中春 罗兴平

    谢寅符, 李洪奇, 孙中春, 罗兴平, 2006. 井资料高分辨率层序地层学. 地球科学, 31(2): 237-244.
    引用本文: 谢寅符, 李洪奇, 孙中春, 罗兴平, 2006. 井资料高分辨率层序地层学. 地球科学, 31(2): 237-244.
    XIE Yin-fu, LI Hong-qi, SUN Zhong-chun, LUO Xing-ping, 2006. Logging Data High-Resolution Sequence Stratigraphy. Earth Science, 31(2): 237-244.
    Citation: XIE Yin-fu, LI Hong-qi, SUN Zhong-chun, LUO Xing-ping, 2006. Logging Data High-Resolution Sequence Stratigraphy. Earth Science, 31(2): 237-244.

    井资料高分辨率层序地层学

    基金项目: 

    国家“十五”重大科技攻关项目 2001BA605A09

    详细信息
      作者简介:

      谢寅符(1974-), 男, 在读博士, 主要从事测井资料处理解释及测井层序地层学.E-mail: xieyinfu@163.com

    • 中图分类号: P618.13

    Logging Data High-Resolution Sequence Stratigraphy

    • 摘要: 在准层序中进行层组一级地层单元的识别和对比是高分辨率层序地层学研究的主要难点.提出了一种综合应用井资料进行层组界面识别和对比的新方法.通过测井曲线形态特征、岩心观察、铸体薄片、X衍射、扫描电镜分析、FMI测井资料, 对工区内钙质夹层成因、泥岩电阻率差异、储层电阻率和海拔深度关系进行了研究.结果表明: 钙质夹层单层厚度在0.5~2m之间, 靠近风化壳和断层位置单层厚度大, 分布在水下分支河道底部和河口坝顶部; 低阻泥岩(4~5Ω·m)和高阻泥岩(> 10Ω·m) 分别来源于不同的沉积物源或者形成于不同的沉积相带; 储层电阻率随着海拔深度的增加而增加.因此, 钙质夹层可以作为层组界面识别和对比的标志, 利用泥岩电阻率差异可以确定层组的叠置关系, 判断储层连通性.据此, 建立了准噶尔盆地石南地区西山窑组含油层段等时地层格架, 确定了格架内储层的连通性及油水界面, 并且通过MDT测井资料进行了验证.在此等时地层格架内, 层组的发育顺序、叠置关系、空间展布形态、以及彼此之间的连通性都被定性、定量的表征出来.

       

    • 图  1  钙质夹层的典型测井曲线特征

      Fig.  1.  Characteristics of logging curves of calcareous interbeds

      图  2  石英的次生加大及后期的方解石胶结

      a.方解石胶结, 胶结物含量超过12%, 石南xx井, J2x12, 2 511 m, 钙质胶结砂岩, 透射光, 400×; b.方解石胶结, 胶结物含量超过12%, 石南xx井, J2x12, 2 511 m, 钙质胶结砂岩, 正交偏光, 400×

      Fig.  2.  Quartz secondary enlargement & terminal calcspar cementation

      图  3  酸性水主要来源及流动示意

      Fig.  3.  Sketch map of origin and current mode of acidic water

      图  4  蒙脱石胶体电阻率随孔隙度、矿化度的变化关系(据Patchett, 1975)

      Fig.  4.  Relation of ascanite colloform resistivity to porosity and salinity

      图  5  泥岩电阻率对比剖面

      Fig.  5.  Contrast section of shale resistivity

      图  6  利用自然伽玛曲线(GR)和倾角模式(DIP) 描绘砂体形态

      Fig.  6.  GR curve shapes and DIP patterns help define and delineate sand bodies

      图  7  层组单元地层倾角模式对比剖面(GR单位: gAPI; DIP单位: 度)

      Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ分别代表层组发育顺序; Bs1、Bs2、Bs3、Bs4、Bs5分别代表层组编号

      图  8  储层电阻率与海拔深度关系

      Fig.  8.  Relation between reservoir resistivity and altitude

      图  9  MDT压力剖面

      Fig.  9.  Pressure section of MDT

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    出版历程
    • 收稿日期:  2005-04-18
    • 刊出日期:  2006-03-25

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