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辽河西部凹陷页岩纹层结构及其储集空间意义

毛俊莉 张金川 刘通 丁江辉

毛俊莉, 张金川, 刘通, 丁江辉. 辽河西部凹陷页岩纹层结构及其储集空间意义[J]. 石油实验地质, 2019, 41(1): 113-120. doi: 10.11781/sysydz201901113
引用本文: 毛俊莉, 张金川, 刘通, 丁江辉. 辽河西部凹陷页岩纹层结构及其储集空间意义[J]. 石油实验地质, 2019, 41(1): 113-120. doi: 10.11781/sysydz201901113
MAO Junli, ZHANG Jinchuan, LIU Tong, DING Jianghui. Laminated texture of shale and its storage space significance in Western Depression, Liaohe Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(1): 113-120. doi: 10.11781/sysydz201901113
Citation: MAO Junli, ZHANG Jinchuan, LIU Tong, DING Jianghui. Laminated texture of shale and its storage space significance in Western Depression, Liaohe Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(1): 113-120. doi: 10.11781/sysydz201901113

辽河西部凹陷页岩纹层结构及其储集空间意义

doi: 10.11781/sysydz201901113
基金项目: 

国家科技重大专项(2016ZX05034-002-001),国家自然科学基金(41272167)和中国石油重大攻关课题(2011A-4804)联合资助。

详细信息
    作者简介:

    毛俊莉(1971-),女,博士生,高级工程师,主要从事油气矿业权登记。E-mail:maojl@sinooilgas.org.cn。

    通讯作者:

    张金川(1964-),男,教授,博士生导师,从事油气成藏及非常规油气资源评价工作。E-mail:zhangjc@cugb.edu.cn。

  • 中图分类号: TE122.2

Laminated texture of shale and its storage space significance in Western Depression, Liaohe Basin

  • 摘要: 几乎所有的富有机质页岩均不同程度地包含了纹层结构,对应反映了不同的沉积相产物、页岩有机质丰度、生烃能力、储集空间及含气性等特点。按照陆相断陷盆地富有机质页岩的沉积特点并依据有机质分布的连续性差异,将辽河西部凹陷黑色页岩结构划分为连续型、断续型和分散型3种纹层结构。借助岩心观察、薄片分析、扫描电镜等手段,结合统计学研究,对辽河西部凹陷黑色页岩纹层结构进行了研究。沙四段黑色页岩主要形成于半咸水的半深湖相,发育了灰云质型弯曲状连续型纹层和黏土型平直状连续型纹层;沙三段黑色页岩主要为深湖-半深湖相长英质断续型纹层和分散状纹层。连续型碳酸盐混合纹层页岩既可以与化学作用有关,也可以与藻类勃发产生的生物化学作用有关,或者是二者的共同作用。富有机质黏土连续型页岩,主要为气候变化所形成的季节性纹层(生物作用)。断续型纹层通常由黏土纹层有韵律组合,粉砂、黏土则是以平流或层间流的方式季节性输入(机械作用)。页岩纹层形态在很大程度上决定了页岩的生烃能力和生烃特点,进而可能影响储集能力。连续型纹层结构(白云质泥岩)碳酸盐含量高,易发生溶蚀作用,有机质丰度高、生烃能力强,有机孔发育,有机孔-微缝储集空间系统造成含油气性好,且碳酸盐含量与含油气性正相关。断续纹层除发育各种无机孔外,还发育有机孔、沿层理裂缝和矿物解理裂缝,从而导致页岩储集空间发育,页岩含气性条件优越。分散型(块状泥岩)储集空间相对不发育,含气性条件较差。

     

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出版历程
  • 收稿日期:  2018-09-27
  • 修回日期:  2018-12-05
  • 刊出日期:  2019-01-28

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