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基于微观孔喉结构及渗流特征建立致密储层分类评价标准——以鄂尔多斯盆地陇东地区长7储层为例

徐永强 何永宏 卜广平 陈霖 刘林玉 朱玉双

徐永强, 何永宏, 卜广平, 陈霖, 刘林玉, 朱玉双. 基于微观孔喉结构及渗流特征建立致密储层分类评价标准——以鄂尔多斯盆地陇东地区长7储层为例[J]. 石油实验地质, 2019, 41(3): 451-461. doi: 10.11781/sysydz201903451
引用本文: 徐永强, 何永宏, 卜广平, 陈霖, 刘林玉, 朱玉双. 基于微观孔喉结构及渗流特征建立致密储层分类评价标准——以鄂尔多斯盆地陇东地区长7储层为例[J]. 石油实验地质, 2019, 41(3): 451-461. doi: 10.11781/sysydz201903451
XU Yongqiang, HE Yonghong, BU Guangping, CHEN Lin, LIU Linyu, ZHU Yushuang. Establishment of classification and evaluation criteria for tight reservoirs based on characteristics of microscopic pore throat structure and percolation: a case study of Chang 7 reservoir in Longdong area, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(3): 451-461. doi: 10.11781/sysydz201903451
Citation: XU Yongqiang, HE Yonghong, BU Guangping, CHEN Lin, LIU Linyu, ZHU Yushuang. Establishment of classification and evaluation criteria for tight reservoirs based on characteristics of microscopic pore throat structure and percolation: a case study of Chang 7 reservoir in Longdong area, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(3): 451-461. doi: 10.11781/sysydz201903451

基于微观孔喉结构及渗流特征建立致密储层分类评价标准——以鄂尔多斯盆地陇东地区长7储层为例

doi: 10.11781/sysydz201903451
基金项目: 

国家重大科技专项项目(2017ZX05013004)和中国石油股份有限公司重大科技专项(2016E-0505)资助。

详细信息
    作者简介:

    徐永强(1989-),男,博士研究生,从事油气田勘探开发研究工作。E-mail:421704657@qq.com。

    通讯作者:

    刘林玉(1965-),男,教授,从事油气储层地质、油气田开发及沉积学研究。E-mail:yulinliu@126.com。

  • 中图分类号: TE122.24

Establishment of classification and evaluation criteria for tight reservoirs based on characteristics of microscopic pore throat structure and percolation: a case study of Chang 7 reservoir in Longdong area, Ordos Basin

  • 摘要: 以鄂尔多斯盆地陇东地区长7致密储层为例,通过物性分析、铸体薄片、扫描电镜、CT扫描、高压压汞、恒速压汞等实验对微观孔喉特征进行分析,结合核磁共振、可视化多相渗流实验分析流体渗流特征,选择合理的评价参数对致密储层进行分类评价。陇东地区长7致密储层平均孔隙度、渗透率分别为9.33%和0.18×10-3 μm2;孔隙类型以长石溶孔、粒间孔为主,平均面孔率为1.89%,孔喉半径主要分布在小于1 μm的范围内,其储集能力较强,但连通性差;主要受细小孔喉控制,可动流体饱和度及驱油效率较低,非均质性对驱油效率也有一定影响。选择孔隙度、渗透率、面孔率、平均孔喉半径、均值系数、排驱压力、可动流体饱和度、驱油效率作为评价参数,利用多元分类系数法进行分类并建立致密储层评价标准,将储层由好到差依次分为Ⅰ、Ⅱ、Ⅲ和Ⅳ类。

     

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  • 收稿日期:  2018-11-21
  • 修回日期:  2019-04-08
  • 刊出日期:  2019-05-28

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