山东国土资源2025，Vol.41Issue(6)：25-33,9.DOI:10.12128/j.issn.1672-6979.2025.06.004
沂沭断裂带北段构造演化与油气的运聚关系
Structural Evolution Characteristics of the Northern Section of Yishu Fault Zone and Its Relationship with Oil and Gas Migration and Accumulation
摘要
Abstract
Yishu fault zone and Weibei depression controlled by Yishu fault zone are important research ob-jects for revealing tectonic evolution and hydrocarbon accumulation mechanism.It is of crucial significance for deepening geological theories and guiding hydrocarbon exploration.Through integrating 3D seismic in-terpretation,reconstruction of structural equilibrium profiles,and geochemical analysis of source rocks,multi-stage activity characteristics of Yishu faault zone and the controlling role of Weibei depression on oil and gas have been revealled systematically.It is showed that the structural evolution process of Yishu fault zone is extremely complex.The evolution of Weibei depression has experienced four stages,they are sinistral strike slip,left-right rotation conversion,dextral strike slip,and regional depression.A unique structural pattern of northern fault depression and southern overlap("northern fault southern overlap")have been formed.The tectonic activity dominates the sedimentary filling and oil and gas accumulation in the depression.The late stage uplift event of the fourth section of Shahejie formation led to the differentia-tion of the maturity of source rocks from east to west.A unidirectional fault transport system developed in the eastern Zaohu Duanbi belt.Lateral migration of hydrocarbons and the formation of a"single-stage ac-cumulation enrichment"model has formed.The western region is affected by the superposition of multiple faults,exhibiting the characteristics of"two periods of accumulation near the source",and ultimately forming a distribution pattern of oil and gas resources with"rich in the east and poor in the west".It is i-dentified that Zaohu Duanbi belt is an efficient exploration target area.It will not only provide theoretical support for oil and gas exploration,but also provide important scientific basis for improving the success rate of oil and gas exploration and regional resource development.关键词
沂沭断裂带/潍北凹陷/构造演化/油气成藏/油气分布格局Key words
Yishu fault zone/Weibei depression/tectonic evolution/hydrocarbon accumulation/hydrocar-bon distribution pattern分类
天文与地球科学引用本文复制引用
李海波,杨磊,展鹏程,杨建超,娄术文,宋文静,武斌,刘永刚,李俊志,王冠臣,李凯..沂沭断裂带北段构造演化与油气的运聚关系[J].山东国土资源,2025,41(6):25-33,9.基金项目
山东省2022年部省协议地质勘查项目,编号:鲁勘字[2022]63号 （）
