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致密砂砾岩成储界限及分级评价标准——以松辽盆地徐家围子断陷白垩系沙河子组为例

王军杰 卢双舫 林子智 周能武 张鹏飞 黄宏胜 郅琪 李柏知

王军杰, 卢双舫, 林子智, 周能武, 张鹏飞, 黄宏胜, 郅琪, 李柏知. 致密砂砾岩成储界限及分级评价标准——以松辽盆地徐家围子断陷白垩系沙河子组为例[J]. 石油实验地质, 2024, 46(3): 553-564. doi: 10.11781/sysydz202403553
引用本文: 王军杰, 卢双舫, 林子智, 周能武, 张鹏飞, 黄宏胜, 郅琪, 李柏知. 致密砂砾岩成储界限及分级评价标准——以松辽盆地徐家围子断陷白垩系沙河子组为例[J]. 石油实验地质, 2024, 46(3): 553-564. doi: 10.11781/sysydz202403553
WANG Junjie, LU Shuangfang, LIN Zizhi, ZHOU Nengwu, ZHANG Pengfei, HUANG Hongsheng, ZHI Qi, LI Baizhi. Reservoir limits and grading evaluation criteria of tight glutenite: a case study of Cretaceous Shahezi Formation in Xujiaweizi Fault Depression, Songliao Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(3): 553-564. doi: 10.11781/sysydz202403553
Citation: WANG Junjie, LU Shuangfang, LIN Zizhi, ZHOU Nengwu, ZHANG Pengfei, HUANG Hongsheng, ZHI Qi, LI Baizhi. Reservoir limits and grading evaluation criteria of tight glutenite: a case study of Cretaceous Shahezi Formation in Xujiaweizi Fault Depression, Songliao Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(3): 553-564. doi: 10.11781/sysydz202403553

致密砂砾岩成储界限及分级评价标准——以松辽盆地徐家围子断陷白垩系沙河子组为例

doi: 10.11781/sysydz202403553
基金项目: 

国家自然科学基金项目 42272156

山东省自然科学基金项目 ZR2020QD036

详细信息
    作者简介:

    王军杰(1999—),男,博士生,从事页岩油气地质评价研究。E-mail: wjj19990125@163.com

    通讯作者:

    卢双舫(1962—),男,博士,教授,从事非常规油气地质和油气地球化学研究。E-mail: lushuangfang@nepu.edu.cn

  • 中图分类号: TE122.24

Reservoir limits and grading evaluation criteria of tight glutenite: a case study of Cretaceous Shahezi Formation in Xujiaweizi Fault Depression, Songliao Basin

  • 摘要: 徐家围子断陷下白垩统沙河子组砂砾岩储层是松辽盆地深部重要的致密气藏储层,其孔渗关系复杂,给成储界限的厘定和储层分级评价带来挑战。针对沙河子组砂砾岩储层,采用水膜厚度法、充注动力法、试气产能法和力学平衡法厘定了理论下限、成藏下限、有效渗流下限和成储上限,根据不同成岩作用主控因素下的孔渗关系确定成储界限物性值。在此基础上,结合储层微观孔隙结构差异划分储层类型,建立致密储层分级评价标准,并利用测井资料将分级评价标准进行应用,为研究区致密气甜点区优选提供依据。将沙河子组砂砾岩分为常规储层、Ⅰ—Ⅳ级致密砂砾岩储层和非储层,成储界限与分级评价结果具有很好的匹配关系。其中,常规储层孔隙度大于9%,渗透率大于0.05×10-3 μm2;Ⅰ级致密储层孔隙度为8%~9%,渗透率为(0.01~0.05)×10-3 μm2;Ⅱ级致密储层孔隙度为5%~8%,渗透率为(0.001~0.01)×10-3 μm2;Ⅲ级致密储层孔隙度为3.5%~5%,渗透率为(0.2 ~1)×10-6 μm2;Ⅳ级致密储层孔隙度为2%~3.5%,渗透率为(0.05~0.2)×10-6 μm2;非储层的孔隙度小于2%,渗透率小于0.05×10-6 μm2。致密砂砾岩气产量受控于致密储层类型;Ⅰ级、Ⅱ级致密储层是致密气高产的有利层段;徐家围子断陷北部安达—宋站地区有利储层厚度较大,为致密气勘探开发甜点区。

     

  • 图  1  松辽盆地徐家围子断陷地质概况及白垩系沙河子组岩性剖面

    据参考文献[26-27]修改。

    Figure  1.  Geological overview of Xujiaweizi Fault Depression in Songliao Basin and lithologic profile of Cretaceous Shahezi Formation

    图  2  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩孔喉比分布

    Figure  2.  Ratio distribution of pore radius to throat radius of tight glutenite in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  3  松辽盆地徐家围子断陷白垩系沙河子组浮力、毛细管阻力与喉道半径关系

    Figure  3.  Relationship between buoyancy, capillary pressure, and throat radius in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  4  水膜厚度法厘定松辽盆地徐家围子断陷白垩系沙河子组致密气理论下限

    Figure  4.  Theoretical lower limit of tight gas determined by water film thickness method in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  5  充注动力法厘定松辽盆地徐家围子断陷白垩系沙河子组致密气成藏下限

    Figure  5.  Gas accumulation lower limit determined by the charging power method in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  6  试气产能法厘定松辽盆地徐家围子断陷白垩系沙河子组致密气有效渗流下限

    Figure  6.  Effective flow lower limit of tight gas determined by gas productivity method in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  7  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩成储界限厘定

    Figure  7.  Determination of limits in tight glutenite reservoirs in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  8  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩镜下特征

    Figure  8.  Microscopic characteristics of tight glutenite in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  9  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩不同类型致密储层高压压汞曲线

    Figure  9.  High-pressure mercury injection curves in different types of tight glutenite reservoirs in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  10  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩不同类型致密储层孔隙结构差异

    Figure  10.  Differences of pore structure in different types of tight glutenite reservoirs in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  11  松辽盆地徐家围子断陷白垩系沙河子组不同类型储层孔隙度—渗透率交会图

    Figure  11.  Porosity and permeability distribution of different types of reservoirs in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  12  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩孔隙度与密度关系

    Figure  12.  Relationship between porosity and density of tight glutenite in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  13  松辽盆地徐家围子断陷白垩系沙河子组部分井储层分级评价结果及试气结果

    Figure  13.  Results of reservoir grading evaluation and gas test of some wells in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    图  14  松辽盆地徐家围子断陷白垩系沙河子组各类致密砂砾岩储层厚度分布

    Figure  14.  Thickness distribution of tight glutenite reservoirs in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    表  1  松辽盆地徐家围子断陷白垩系沙河子组致密砂砾岩分级评价标准及成储界限

    Table  1.   Grading evaluation criteria and reservoir limits of tight glutenite in Cretaceous Shahezi Formation of Xujiaweizi Fault Depression in Songliao Basin

    储层分级 孔隙度/% 渗透率/10-6 μm2 界限
    常规储层 >9 >50 储层上限
    Ⅰ级储层 8~9 10~50
    Ⅱ级储层 5~8 1~10 有效渗流下限
    成藏下限
    理论下限
    Ⅲ级储层 3.5~5 0.2~1
    Ⅳ级储层 2~3.5 0.05~0.2
    非储层 < 2 < 0.05
    下载: 导出CSV
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  • 收稿日期:  2023-06-05
  • 修回日期:  2024-03-29
  • 刊出日期:  2024-05-28

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