岩性油气藏 ›› 2015, Vol. 27 ›› Issue (6): 5563.doi: 10.3969/j.issn.1673-8926.2015.06.008
秦国省1,2,吴胜和 2,郑联勇3,喻 宸1,3
Qin Guosheng 1,2,Wu Shenghe 2,Zheng Lianyong 3,Yu Chen 1,3
摘要:
应用老君庙油田较丰富的钻井资料和多年积累的地质研究成果,从沉积过程角度出发,对其河口坝较发育的 L11 小层进行了储层构型研究,并对基于沉积过程的河口坝储层构型分级系统进行了探讨。该系统以末端水下分流河道控制形成的单一成因河口坝为三级构型单元(同时也是基本的研究单元),以主干水下分流河道控制形成的单一成因河口坝复合体为四级构型单元,以多个主干水下分流河道控制形成的河口坝复合体为五级构型单元。确定了单一成因河口坝的识别标志,在研究区共识别出 14 个单一成因河口坝。 在此基础上,通过横切物源剖面及顺物源剖面确定各单一成因河口坝沉积的先后顺序,结合三维综合分析,最终阐明了各单一成因河口坝的时间演化序列。在沉积学原理的指导下,恢复了研究区复合河口坝的形成过程,明确了河口坝的规模及河口坝间的叠置样式与其形成过程间的耦合关系。
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