天然气地球科学 ›› 2022, Vol. 33 ›› Issue (5): 764774.doi: 10.11764/j.issn.1672-1926.2021.10.010
Wei WANG(),Wenbin SHI,Xiaoping FU,Jiatong XIE,Kai NI
摘要:
为查明四川盆地陆相页岩油气地质特征及富集规律,综合采用全岩矿物X射线衍射、有机地球化学、氩离子抛光—扫描电镜、氦气孔隙度、现场含气量测试及地震压力系数预测等多种技术手段,开展了涪陵地区中侏罗统凉高山组页岩油气藏地质特征及富集高产规律研究,指出凉高山组优质页岩层段具有高泥地比、高GR、高TOC、高含气量的特点,提出涪陵地区凉高山组陆相页岩油气富集高产主要受4个因素的控制:①大面积分布的半深湖相页岩是页岩油气成烃控储的基础;②适当的演化程度控制了陆相页岩油气富集成藏;③良好的保存条件是页岩油气富集成藏的关键;④不同尺度微裂缝的发育有利于陆相页岩油气高产。各影响因素中,保存条件和微裂缝的发育对富集高产的影响最大。
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