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页岩储层孔隙类型控制因素研究——以川东焦石坝地区龙马溪组为例

耿一凯 金振奎 赵建华 温馨 汪洋

耿一凯, 金振奎, 赵建华, 温馨, 汪洋. 页岩储层孔隙类型控制因素研究——以川东焦石坝地区龙马溪组为例[J]. 石油实验地质, 2017, 39(1): 71-78. doi: 10.11781/sysydz201701071
引用本文: 耿一凯, 金振奎, 赵建华, 温馨, 汪洋. 页岩储层孔隙类型控制因素研究——以川东焦石坝地区龙马溪组为例[J]. 石油实验地质, 2017, 39(1): 71-78. doi: 10.11781/sysydz201701071
Geng Yikai, Jin Zhenkui, Zhao Jianhua, Wen Xin, Wang Yang. Controlling factors of pore types in shale reservoirs:A case study from the Longmaxi Formation in Jiaoshiba area, eastern Sichuan Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(1): 71-78. doi: 10.11781/sysydz201701071
Citation: Geng Yikai, Jin Zhenkui, Zhao Jianhua, Wen Xin, Wang Yang. Controlling factors of pore types in shale reservoirs:A case study from the Longmaxi Formation in Jiaoshiba area, eastern Sichuan Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(1): 71-78. doi: 10.11781/sysydz201701071

页岩储层孔隙类型控制因素研究——以川东焦石坝地区龙马溪组为例

doi: 10.11781/sysydz201701071
基金项目: 中国博士后科学基金“富有机质页岩中自生石英成因机制及对页岩气勘探的意义”(2016M591350)资助。
详细信息
    作者简介:

    耿一凯(1989-),男,博士研究生,从事沉积学与储层研究。E-mail:gyk2o12@163.com。

  • 中图分类号: TE122.23

Controlling factors of pore types in shale reservoirs:A case study from the Longmaxi Formation in Jiaoshiba area, eastern Sichuan Basin

  • 摘要: 为了明确页岩不同岩相类型中孔隙类型的构成和垂向分布特征,选取川东龙马溪组7个页岩样品,进行氩离子抛光扫描电镜成像,对其孔隙类型进行定量分析。考虑到页岩的非均质性,每个样品选取5个区域,每个区域由100张放大倍数为14 000倍的SEM照片拼接组成(10 μm×10 μm),对每张SEM照片进行2000计点法统计各类型孔隙的面孔率,最后归纳得出每个样品中不同类型孔隙的平均百分含量。研究区可观察到3大类孔隙:粒间孔、粒内孔和有机质孔,不同岩相类型中各类型孔隙占比不同,龙马溪组自上而下页岩岩相类型变化趋势为黏土质页岩—粉砂质页岩—硅质页岩,随着黏土矿物含量逐渐减少,有机质含量和石英含量逐渐增加,其主要孔隙类型由粒内孔转变为有机质孔。脆性矿物含量对以粒缘孔为主的粒间孔数量起着控制作用;黏土矿物含量控制以片间孔为主的粒内孔发育程度;有机碳和自生石英含量决定着有机质孔的数量。龙马溪组下段的硅质页岩是页岩气最有利储层。

     

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出版历程
  • 收稿日期:  2016-05-26
  • 修回日期:  2016-11-18
  • 刊出日期:  2017-01-28

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