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    莺歌海盆地高温超压环境下储层物性影响因素

    姜涛 解习农

    姜涛, 解习农, 2005. 莺歌海盆地高温超压环境下储层物性影响因素. 地球科学, 30(2): 215-220.
    引用本文: 姜涛, 解习农, 2005. 莺歌海盆地高温超压环境下储层物性影响因素. 地球科学, 30(2): 215-220.
    JIANG Tao, JIE Xi-nong, 2005. Effects of High Temperature and Overpressure on Reservoir Quality in the Yinggehai Basin, South China Sea. Earth Science, 30(2): 215-220.
    Citation: JIANG Tao, JIE Xi-nong, 2005. Effects of High Temperature and Overpressure on Reservoir Quality in the Yinggehai Basin, South China Sea. Earth Science, 30(2): 215-220.

    莺歌海盆地高温超压环境下储层物性影响因素

    基金项目: 

    教育部科学技术研究重点项目“超压盆地流体系统及成藏动力学研究” 01038

    详细信息
      作者简介:

      姜涛(1979 - ), 男, 在读博士生, 2000年毕业于中国地质大学(武汉)石油系, 现主要从事油气成藏动力学和储层沉积学方向的研究

    • 中图分类号: P618

    Effects of High Temperature and Overpressure on Reservoir Quality in the Yinggehai Basin, South China Sea

    • 摘要: 莺歌海盆地由于独特的沉积地层和温压场特征, 使得盆地内的储层成岩演化也具有了与众不同的过程和特点.通过对莺歌海盆地内有钻井证实的两种超压体系类型(自源型和传导型) 的对比研究, 阐明了其成因差别及其石油地质意义, 并详细论述了高温超压环境下储层物性的影响因素: (1) 储层物性主要受沉积环境和成岩作用控制; (2) 高地温梯度使砂岩的孔隙度衰减较快; (3) 超压保存了一部分原生孔隙, 这是深部储层还具有高孔隙度的最主要原因; (4) 超压通过溶解等成岩作用产生了一些次生孔隙; (5) 流体压裂突破过程中产生了大量的裂缝, 有效地提高了储层渗透性.

       

    • 图  1  莺歌海盆地分布及充填序列

      Fig.  1.  Distribution and filling sequences of the Yinggehai basin

      图  2  粒度、分选性与孔隙度、渗透率关系

      Fig.  2.  Correlation plot between granularity, divagation and porosity, permeability

      图  3  DF1-1构造区与Ya13-1构造区孔隙度演化对比

      Fig.  3.  Porosity evolution comparison between DF1-1 and Ya13-1 zones

      图  4  渗透率与孔隙度关系

      Fig.  4.  Porosity-permeability plot at different depths of LD15-1-1

      表  1  不同沉积环境下的碎屑岩物性

      Table  1.   Clast reservoir qualities in different sedimentary environments

      表  2  LG20-1-1井沿岸砂坝岩石学特征

      Table  2.   Lithologic characteristics of shore sandstones in LG20-1-1 well

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    出版历程
    • 收稿日期:  2004-09-30
    • 刊出日期:  2005-03-25

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