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致密砂岩碎屑颗粒粒度定量表征及对产能的指示意义

姚梦麟 陶云贺 贺洪举 侯克均 刘海军 熊宇 张冲

姚梦麟,陶云贺,贺洪举,等. 致密砂岩碎屑颗粒粒度定量表征及对产能的指示意义[J]. 地质科技通报,2025,44(2):1-10 doi: 10.19509/j.cnki.dzkq.tb20230582
引用本文: 姚梦麟,陶云贺,贺洪举,等. 致密砂岩碎屑颗粒粒度定量表征及对产能的指示意义[J]. 地质科技通报,2025,44(2):1-10 doi: 10.19509/j.cnki.dzkq.tb20230582
YAO Menglin,TAO Yunhe,HE Hongju,et al. Quantitative characterization of the clastic particle size of tight sandstone and its indicative significance for productivity[J]. Bulletin of Geological Science and Technology,2025,44(2):1-10 doi: 10.19509/j.cnki.dzkq.tb20230582
Citation: YAO Menglin,TAO Yunhe,HE Hongju,et al. Quantitative characterization of the clastic particle size of tight sandstone and its indicative significance for productivity[J]. Bulletin of Geological Science and Technology,2025,44(2):1-10 doi: 10.19509/j.cnki.dzkq.tb20230582

致密砂岩碎屑颗粒粒度定量表征及对产能的指示意义

doi: 10.19509/j.cnki.dzkq.tb20230582
基金项目: 国家自然科学基金项目(41404084)
详细信息
    作者简介:

    姚梦麟:E-mail:yaoml_dyy@cnpc.com.cn

    通讯作者:

    E-mail:yzlogging@163.com

  • 中图分类号: P618.13

Quantitative characterization of the clastic particle size of tight sandstone and its indicative significance for productivity

More Information
  • 摘要:

    粒度分析可以判别地层沉积环境和评价储层渗透性,对碎屑岩油气储层评价十分重要。以四川盆地天府气田沙溪庙组致密砂岩储层为研究对象,分析了碎屑岩颗粒大小和形状对储层渗透性的影响,结合粒度中值M、粒度C值、分选系数等参数,提出了一个综合表征粒度的指示参数PI,对颗粒粒度比较敏感的测井参数自然伽马、光电吸收截面指数和中子进行主成分分析,降维成一个主成分参数,建立了粒度指示参数PI与主成分参数的指数关系模型,结合测试及测井资料,分析了粒度指示参数PI与储层产能的相关关系。统计了天府气田沙溪庙组7口井8个测试气层段,并通过上述方法计算了7口井的粒度指示参数PI值,分析了测试段无阻流量与粒度指示参数PI的响应关系。结果显示:天府气田沙溪庙组测试段无阻流量与粒度指示参数PI的累加值X呈指数关系,其相关系数R2达到0.85。研究说明:对于岩性以中−细粒砂岩为主,粒级变化大,且储集空间以残余粒间孔为主的储层,粒度指示参数PI在一定程度上可以指示该种类型储层的产能大小。

     

  • 图 1  碎屑颗粒粒度大小及分布特征曲线(永浅A井,沙溪庙组沙二段)

    C. 粒度C值;M. 粒度中值;So. 分选系数

    Figure 1.  Size and distribution characteristic of debris particles

    图 2  颗粒大小和形状对储层渗透性的影响(改自文献[22])

    KH1>KH2>KH3KV1>KV2>KV3KH 为垂向渗透率;KV为水平渗透率

    Figure 2.  Influence of particle size and shape on reservoir permeability

    图 3  天府区块沙溪庙组PI与测井参数之间的皮尔逊相关图

    PI. 粒度指示参数;M. M-N交会图中的M(也叫岩性指示参数);N. M-N交会图中的N(也叫岩性指示参数);X. 冲洗带电阻率与孔隙度平方的乘积,$X=R_{xo}\phi^2 $;AC. 声波时差;CNL. 补偿中子;DEN. 补偿密度;GR. 自然伽马;PE. 光电吸收截面指数;RT. 深侧向电阻率;RXO. 浅侧向电阻率;下同

    Figure 3.  Pearson correlation between PI and logging parameters of the Shaximiao Formation in the Tianfu Block

    图 4  粒度指示参数PI与主成分F1的相关关系图

    Figure 4.  Correlation plot of the particle size indicator parameter PI with the principal component F1

    图 5  沙溪庙组粒度指示参数PI测井评价效果图(永浅A井)

    Core PI. 岩心粒度指示参数;1 IN=2.54 cm

    Figure 5.  Result of PI logging evaluation based on particle size indicator parameters in the Shaximiao Formation

    图 6  天府气田部分测试层段粒度指示参数PI响应特征

    注:无阻流量为试油测试获取的产液量;黑色加粗框线为统计无阻流量值的深度段;下同

    Figure 6.  PI characteristics response to the particle size indicator parameters in several tested layers of the Tianfu gas field

    图 7  天府气田测试段无阻流量与粒度指示参数PI的累加值x的关系

    Figure 7.  Correlation between the unimpeded flow rate and the cumulative PI value, x, in the test section of the Tianfu gas field

    表  1  主成分分析结果

    Table  1.   Results of the principal component analysis

    主成分 初始特征值 主成分相关系数 主成分矩阵
    特征值 方差/% 累计方差/% ZGR ZPE ZCNL ZGR ZPE ZCNL
    F1 2.308 83.675 83.675 0.583 0.456 0.545 0.886 0.693 0.828
    F2 0.497 10.676 94.351
    F3 0.228 5.649 100
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-10-20
  • 录用日期:  2024-02-26
  • 修回日期:  2024-02-23
  • 网络出版日期:  2024-03-29

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