广西融水地区石炭系鹿寨组优质页岩储层特征与成藏模式
胡志方 , 王玉芳 , 翟刚毅 , 张家政 , 康海霞 , 薛宗安 , 李娟 , 张云枭 , 周惠
地球科学 ›› 2023, Vol. 48 ›› Issue (04) : 1587 -1602.
广西融水地区石炭系鹿寨组优质页岩储层特征与成藏模式
Reservoir Characteristics of High-Quality Shale of Carboniferour Luzhai Formation in Rongshui Area, Guangxi
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主要以桂融页1井石炭系鹿寨组页岩为研究对象,利用全岩-黏土X衍射、氩离子抛光扫描电镜、核磁共振、现场解吸和地化分析等多种测试手段,结合测录井解释成果,从岩石学、有机地球化学、矿物组成、孔隙类型、储层物性及含气性等方面,系统评价了鹿寨组优质页岩储层特征.结果表明:①石炭系鹿寨组鹿一段优质页岩以黑色碳质页岩和灰黑色灰质页岩为主,主要形成于裂陷海槽沉积环境下的深水相,优质页岩连续厚度大,具备良好的页岩气沉积基础;②页岩有机碳含量高,热演化程度适中,具备良好的生烃基础和生烃能力;③页岩脆性好,孔隙空间发育良好,现场解吸含气性好,具备良好的页岩气储集能力;④页岩分布连续稳定,顶底板条件好,逆断封堵断层有利于页岩气富集保存,具备良好的页岩气保存条件.进一步证实了该地区石炭系鹿寨组具备良好的页岩气富集成藏条件.
广西融水 / 石炭系 / 鹿寨组 / 优质页岩 / 储层特征 / 油气地质
Rongshui area / Guangxi / Carboniferous / Luzhai Formation / high-quality shale / reservoir characteristics / petroleum geology
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渝黔-滇桂地区页岩气战略选区调查(DD20190108)
中美石炭系-二叠系页岩储层评价技术合作研究项目(2017YFE0106300)
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