吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (4): 1008-1017.doi: 10.13278/j.cnki.jjuese.20170074
牟敦山, 付广, 陈雪晴
Mu Dunshan, Fu Guang, Chen Xueqing
摘要: 为了研究南堡凹陷南堡1号馆三段火山岩盖层上下油气分布规律,在馆三段火山岩盖层及其内油气渗漏断裂发育及分布特征研究的基础上,通过对馆三段火山岩盖层断接厚度与其封油气所需最小断接厚度相对大小的比较和对油气渗漏断裂凸面脊的确定,预测了南堡1号构造馆三段断盖配置油气渗漏部位;并结合油气分布,对断盖配置油气渗漏部位对油气成藏与分布的控制作用进行了研究。结果表明,南堡1号构造馆三段断盖配置发育10处油气渗漏部位,其中:F2及分支断裂油气渗漏部位最发育,有3处油气渗漏部位;其次是F1、F6断裂,有2处油气渗漏部位;F3、F4、F5和F7断裂仅各发育1处油气渗漏部位。这些油气渗漏部位及附近有利于下伏东一段油气在上覆馆三段之上聚集成藏,应是造成南堡1-1断鼻、南堡1-3断块和南堡1-5断鼻北部油区油气既可以分布在下伏东一段又可分布在馆三段之上,而南堡1-5断鼻南部油气仅分布在下伏东一段的根本原因。
中图分类号:
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