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黔东南岑巩地区下寒武统黑色页岩孔隙结构特征

王濡岳 胡宗全 杨滔 龚大建 尹帅 刘忠宝 高波

王濡岳, 胡宗全, 杨滔, 龚大建, 尹帅, 刘忠宝, 高波. 黔东南岑巩地区下寒武统黑色页岩孔隙结构特征[J]. 石油实验地质, 2019, 41(2): 207-214. doi: 10.11781/sysydz201902207
引用本文: 王濡岳, 胡宗全, 杨滔, 龚大建, 尹帅, 刘忠宝, 高波. 黔东南岑巩地区下寒武统黑色页岩孔隙结构特征[J]. 石油实验地质, 2019, 41(2): 207-214. doi: 10.11781/sysydz201902207
WANG Ruyue, HU Zongquan, YANG Tao, GONG Dajian, YIN Shuai, LIU Zhongbao, GAO Bo. Pore structure characteristics of the Lower Cambrian black shale in the Cengong block, southeastern Guizhou area[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(2): 207-214. doi: 10.11781/sysydz201902207
Citation: WANG Ruyue, HU Zongquan, YANG Tao, GONG Dajian, YIN Shuai, LIU Zhongbao, GAO Bo. Pore structure characteristics of the Lower Cambrian black shale in the Cengong block, southeastern Guizhou area[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(2): 207-214. doi: 10.11781/sysydz201902207

黔东南岑巩地区下寒武统黑色页岩孔隙结构特征

doi: 10.11781/sysydz201902207
基金项目: 

国家自然科学基金(41872124)、国家科技重大专项(2017ZX05036002-001,2016ZX05034004-003,2017ZX05036004-001)和中国石化科技开发部项目(P15114,P17027-2)联合资助。

详细信息
    作者简介:

    王濡岳(1990-),男,博士,工程师,从事非常规油气地质研究。E-mail:wry1990@vip.qq.com。

  • 中图分类号: TE122.23

Pore structure characteristics of the Lower Cambrian black shale in the Cengong block, southeastern Guizhou area

  • 摘要: 利用矿物组分、有机地球化学、氮气吸附、物性及扫描电镜等资料,对黔东南岑巩地区下寒武统牛蹄塘组和变马冲组页岩孔隙结构特征进行了系统研究。牛蹄塘组与变马冲组贫有机质页岩以平板和狭缝形黏土粒间孔为主,平均孔径普遍大于5 nm;牛蹄塘组富有机质页岩以狭缝形和少量墨水瓶状孔为主,平均孔径普遍小于3~4 nm,比表面积为贫有机质页岩的2~3倍。页岩总孔容与比表面积、黏土含量与平均孔径均为正相关关系,而前二者与后二者均为负相关关系。有利保存条件下页岩具有相对"高孔低渗"特征,峰值孔径较大,有机质孔发育程度较高,孔渗相关性强。不利保存条件下页岩储层致密,孔隙度与峰值孔径较低,裂缝过度发育造成相对"低孔高渗"特征。有机碳含量对孔隙结构具有重要控制作用,与孔容、比表面及孔隙度总体正相关,与平均孔径负相关;过高有机碳含量层段页岩塑性增强,孔径较低,压实作用和不利保存条件等因素使部分狭窄孔喉发生萎缩、坍塌与闭合,导致孔隙度、孔容、比表面和脆性与有机碳含量出现负相关关系。

     

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出版历程
  • 收稿日期:  2018-01-12
  • 修回日期:  2019-02-20
  • 刊出日期:  2019-03-28

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