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鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层甜点分类评价

张琳琳 王孔杰 赖枫鹏 郭伟 苗丽丽

张琳琳, 王孔杰, 赖枫鹏, 郭伟, 苗丽丽. 鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层甜点分类评价[J]. 石油实验地质.
引用本文: 张琳琳, 王孔杰, 赖枫鹏, 郭伟, 苗丽丽. 鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层甜点分类评价[J]. 石油实验地质.
ZHANG Linlin, WANG Kongjie, LAI Fengpeng, GUO Wei, MIAO Lili. Classification and evaluation of sweet spots of marine shale gas reservoir in Ordovician Wulalike Formation on the westen margin of Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT.
Citation: ZHANG Linlin, WANG Kongjie, LAI Fengpeng, GUO Wei, MIAO Lili. Classification and evaluation of sweet spots of marine shale gas reservoir in Ordovician Wulalike Formation on the westen margin of Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT.

鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层甜点分类评价

基金项目: 

国家自然科学基金项目"页岩油藏CO2复合压裂渗吸-渗流机理及排采制度优化研究"(52174037)资助。

详细信息
    作者简介:

    张琳琳(1999-),女,硕士生,从事油气田开发理论与方法研究。E-mail:zhangllinn@163.com。

    通讯作者:

    赖枫鹏(1981-),男,教授,从事非常规油气、油气田开发理论与方法研究。E-mail:laifengpeng@163.com。

  • 中图分类号: TE132.2

Classification and evaluation of sweet spots of marine shale gas reservoir in Ordovician Wulalike Formation on the westen margin of Ordos Basin

  • 摘要:

    甜点评价对页岩气藏高效勘探开发具有重要意义。以鄂尔多斯盆地西缘奥陶系乌拉力克组页岩储层为研究对象,通过岩石薄片分析、X射线衍射、SEM扫描电镜、低温氮气吸附、等温吸附、总有机碳(TOC)含量、有机质镜质体反射率(Ro)测试和三轴岩石力学测试8个实验,得到目标区岩石类型为灰褐色泥页岩,孔径集中分布在2~4 nm和35~61 nm,主要发育粒间孔、黏土矿物层间孔和粒内孔;总有机碳含量平均为1.01%,Ro值平均为1.75%,脆性指数平均为47.8%。通过分析不同因素对页岩储层甜点区评选及评价的影响,认为硅质矿物含量、黏土矿物含量、孔比表面积、总有机碳含量和Ro值对储层的吸附性能起决定作用,孔径大小和孔隙类型数量控制储层的储集性能,脆性矿物含量和岩石力学参数影响储层的可压性。根据地质甜点评价的吸附性能和储集性能两个指标以及工程甜点的可压性指标,完成了不同特征对应的参数指标细分类,初步建立了鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层3个等级的地质甜点和可压性甜点的分类评价方案,结果表明目标区各特征参数均达到Ⅱ级标准,可以作为页岩气开发甜点区。

     

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出版历程
  • 收稿日期:  2023-01-15
  • 修回日期:  2023-11-20
  • 网络出版日期:  2023-10-16

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