岩性油气藏 ›› 2017, Vol. 29 ›› Issue (2): 4450.doi: 10.3969/j.issn.1673-8926.2017.02.006
肖阳1, 张少华2,3, 魏岩1, 杨明慧2,4, 陈玉婷1, 潘娟1
XIAO Yang1, ZHANG Shaohua2,3, WEI Yan1, YANG Minghui2,4, CHEN Yuting1, PAN Juan1
摘要: 为了研究赛汉塔拉凹陷的形成、演化及油气成藏规律,利用地震、钻井、测井等资料对边界断层锡林断裂构造特征进行了分析,并探讨了边界断裂构造对油气成藏的控制作用。结果表明,锡林断裂具有明显的分段性,不同段其断面形态存在差异,表现为中段断面相对陡倾,南、北段则相对平缓。由平均断裂活动速率可知,阿尔善组和腾格尔组沉积期是锡林断裂的强烈活动期。锡林断裂的形成与演化对油气成藏具有控制作用,具体表现为:①断裂活动控制生烃洼槽及优质烃源岩的形成,并促进烃源岩的热演化;②断裂活动控制砂体展布,并形成多种类型的圈闭;③断裂、砂体和不整合面共同构成了油气运移的输导格架。因此,生烃洼槽周边受锡林断裂控制而形成的圈闭是油气聚集的有利场所。
中图分类号:
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