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    东营凹陷流体压力系统研究

    刘晓峰 解习农

    刘晓峰, 解习农, 2003. 东营凹陷流体压力系统研究. 地球科学, 28(1): 78-86.
    引用本文: 刘晓峰, 解习农, 2003. 东营凹陷流体压力系统研究. 地球科学, 28(1): 78-86.
    LIU Xiao-feng, JIE Xi-nong, 2003. Study on Fluid Pressure System in Dongying Depression. Earth Science, 28(1): 78-86.
    Citation: LIU Xiao-feng, JIE Xi-nong, 2003. Study on Fluid Pressure System in Dongying Depression. Earth Science, 28(1): 78-86.

    东营凹陷流体压力系统研究

    基金项目: 

    国家自然科学基金项目 49872045

    详细信息
      作者简介:

      刘晓峰(1970-), 男, 讲师, 1999年毕业于中国地质大学, 获硕士学位, 现从事盆地流体和油气成藏动力学的研究工作.E-mail: xfliu@cug.edu.cn

    • 中图分类号: P618.1

    Study on Fluid Pressure System in Dongying Depression

    • 摘要: 利用钻井泥岩声波测井资料和实测地层压力资料, 分析了东营凹陷流体压力系统的结构和分布及其影响因素.单井的压力-深度曲线呈现出“二段式”, 即上段正常压力系统(正常压实带) 和下段异常压力系统(欠压实带).剖面和平面压力系统综合分析的结果表明, 东营凹陷压力系统呈现环状结构, 即内环为超高压系统, 中环为高压系统, 外环为常压-低压系统.中环高压系统和内环超高压系统构成了封闭的巨型超压封存箱复合体, 因其与沙河街组三、四段活跃的烃源岩有着成因的联系, 故称之为烃源岩-超压封存箱复合体(SR-OPCC).受渗透性砂岩层、断层及盐构造等压力输导系统的影响, 封存箱内产生压力分隔现象, 形成了若干个由压力输导系统联系的次级超压封存箱.概括了封存箱-压力输导系统-封存箱组合模式.烃源岩-超压封存箱复合体(SR-OPCC) 的存在对油气的运移和聚集产生了深远的影响

       

    • 图  1  欠压实与异常压力(L101井)

      TOP.超压顶界面; OPC.超压封存箱; SOPC.次级超压封存箱; 图中地层单元: E2s3l.沙河街组三段下亚段; E2s3m.沙河街组三段中亚段; E2s3u.沙河街组三段上亚段; E2-3s2l.沙河街组二段下亚段; E2-3s2u.沙河街组二段上亚段; E3s1.沙河街组一段; E3d.东营组; N1g+N2m+Q.馆陶组+明化镇组+第四系(其他图中代码相同); SP.自然电位测井曲线; R.电阻率测井曲线

      Fig.  1.  Under compaction and abnormal pressure (well L101)

      图  2  东营凹陷试油实测压力深度

      a.超压(PC≥1.1);b.异常低压(PC≤0.8);phy.静水压力

      Fig.  2.  Measured pressure-depth plot from different areas in Dongying depression

      图  3  超压流体封存箱组合模式

      a.封存箱-封存箱模式; b.封存箱-压力输导系统-封存箱模式; S.压力封闭层; OPC.超压封存箱; SOPC.次级超压封存箱; PCS.压力输导系统; phy.静水压力

      Fig.  3.  Model of assemblage of two or more overpressured fluid compartments

      图  4  S119井压力结构与压力输导系统

      TOP.超压顶界面; NR.富泥段; SR.富砂段; SRP.富砂含油段; SOPC.次级超压封存箱; PCS.压力输导系统

      Fig.  4.  Pressure structures and conduit systems of well S119

      图  5  T711井异常压力与断裂的关系

      Fig.  5.  Relationship between a fault and abnormal pressure of well T711

      图  6  东营凹陷剖面压力系统结构

      Fig.  6.  Calculated pressure coefficient section of Dongying depression

      图  7  东营凹陷沙三中亚段顶界面(SB4) 压力系数等值线平面

      Fig.  7.  Calculated pressure coefficient plane map at the top of submember E2s3m

      图  8  东营凹陷沙三下亚段顶界面(SB6) 压力系数等值线平面

      Fig.  8.  Calculated pressure coefficient plane map at the top of submember E2s3l

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    • 收稿日期:  2002-05-25
    • 刊出日期:  2003-01-25

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