吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (5): 1222-1234.doi: 10.13278/j.cnki.jjuese.20180054
王夏斌1, 姜在兴2, 胡光义1, 范廷恩1, 王俊辉3, 卢欢4
Wang Xiabin1, Jiang Zaixing2, Hu Guangyi1, Fan Ting'en1, Wang Junhui3, Lu Huan4
摘要: 薄互层砂体研究是湖盆沉积学的研究难点。本文针对辽河西部凹陷沙四上亚段(Es4上)薄互层砂体,以层序地层学、沉积学、测井地质学等理论为指导,综合岩心、测录井和地震等多种资料,对西部凹陷的薄互层砂体进行精细描述和深入剖析。结果表明,研究区主要发育辫状河三角洲和湖泊沉积相,其中,滩坝砂体是湖泊相的主力砂体。通过考虑不同沉积背景下滩坝在岩相组合、发育位置和成因机理的差异性,将滩坝划分成侧缘改造型滩坝、前缘改造型滩坝、基岩改造型滩坝、淹没改造型滩坝和风暴改造型滩坝5种沉积模式;对薄层滩坝砂体的控制因素进行分析,认为其受到"风场-物源-盆地"三端元的控制。
中图分类号:
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