岩性油气藏 ›› 2015, Vol. 27 ›› Issue (6): 6471.doi: 10.3969/j.issn.1673-8926.2015.06.009
陈思明1,侯明才1,房启飞2,凡 闪3,姚清洲2,周俊峰2
Chen Siming 1,Hou Mingcai 1,Fang Qifei2,Fan Shan 3,Yao Qingzhou 2,Zhou Junfeng 2
摘要:
为厘清英买 2 地区奥陶系碳酸盐岩油气成藏史与主成藏期,探索油气富集规律,借助流体包裹体岩相学及温度特征分析,从油气主成藏期、构造、断裂及储层研究入手,解剖油气富集成藏主控因素间的时空匹配关系。 研究表明,英买 2 地区奥陶系储层发育晚加里东—早海西期、晚海西期和喜马拉雅期等3 期烃包裹体,反映储层经历了 3 次不同期次、不同强度的油气充注,且以晚海西期的中质油气充注为主;研究区油气富集受控于主成藏期构造背景下断裂与储层的时空匹配;北北西向、北西向走滑断裂带及北东向逆冲走滑断裂带对储层发育和油气运移与调整均起到了重要的控制作用; 3 组不同期次断裂带交会区是油气富集区,其优质储层和优势输导体系等成藏控制因素与主成藏期匹配良好。 在此基础上,对油气富集接替区进行了预测。
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