大庆石油地质与开发2026，Vol.45Issue(4)：29-38,10.DOI:10.19597/J.ISSN.1000-3754.202503018
渤海湾盆地饶阳凹陷流体包裹体特征及浅层油气成藏改造过程
Characteristics of fluid inclusions in Raoyang Sag of Bohai Bay Basin and hydrocarbon accumulation and transformation process in shallow reservoirs
摘要
Abstract
To investigate the influence of Cenozoic tectonic activity on shallow hydrocarbon accumulation and trans-formation in Raoyang Sag of Bohai Bay Basin,fluid-inclusion analysis and test are conducted.Combined with burial history and fault-caprock sealing evaluation,hydrocarbon accumulation and tectonic transformation processes are revealed by analyzing the differences in fluid-inclusion characteristics in shallow reservoirs.The results show that,although 2 major late-Cenozoic tectonic events caused local anomalies in fluid-inclusion signatures,3 stages of hy-drocarbon charging were still identified in shallow reservoirs,corresponding to fluid-inclusion fluorescence colours of yellow(80～90 ℃),yellow-white to yellow-green(90～120 ℃)and blue-green(120～140 ℃).Dongying Formation exhibits continuous charging during stages Ⅰ,Ⅱ and Ⅲ,while Guantao Formation reservoirs are mainly charged during stage Ⅱ,lacking low-maturity(stage I)and mature(stage Ⅲ)hydrocarbon charging.Hydrocarbon in Don-gying Formation accumulated mainly via Paleogene-Neogene active oil-source faults that connected the underlying Shahejie Formation source rocks,undergoing 2 significant transformation events.Guantao Formation reservoirs orig-inated from leakage and re-accumulation of Dongying Formation hydrocarbons at 12 Ma.Reservoir distribution is mainly controlled by fault-sealing zones where top fault-caprock thickness of Dongying Formation is less than 62 m.The research provides theoretical support for achieving breakthroughs in full-sequence hydrocarbon exploration throughout Jizhong Depression.关键词
流体包裹体/油气成藏/构造活动/东营组―馆陶组/饶阳凹陷Key words
fluid inclusion/hydrocarbon accumulation/tectonic activities/Dongying-Guantao Formations/Raoy-ang Sag分类
能源科技引用本文复制引用
李熹微,刘宗堡,陈柯童,张海鑫,赵懿,李雅雯,焦亚先,温馨,李依航,陈昉..渤海湾盆地饶阳凹陷流体包裹体特征及浅层油气成藏改造过程[J].大庆石油地质与开发,2026,45(4):29-38,10.基金项目
国家科技重大专项"低勘探程度凹陷油气成藏条件与突破方向"(2024ZD1400106). （2024ZD1400106）
