断盖配置组合下、中、上部油气运聚空间纵向分布刻画方法及其应用  

Longitudinal distribution of oil and gas transportation and gathering in the lower—middle—upper part of fault-cap configuration combinations and its application

作　　者：付广[1] 丁云浩 FU Guang;DING Yunhao(Northeast Petroleum University,Daqing,Heilongjiang,163318)

机构地区：[1]东北石油大学,黑龙江大庆163318

出　　处：《地质论评》2024年第5期2015-2023,共9页Geological Review

基　　金：国家自然科学基金资助项目“断砂配置侧向分流运聚油气机理及有利部位识别研究”(编号:42072157)的成果。

摘　　要：为了搞清含油气盆地断裂与盖层配置(简称断盖配置)组合下、中、上部油气纵向分布规律,在断盖配置组合封闭特征及其下油气运聚空间纵向分布研究的基础上,通过油源断裂输导油气部位和油源断裂与上中下区域性泥岩盖层配置封闭和不封闭部位叠合,建立了一套断盖配置组合下、中、上部油气运聚空间纵向分布的刻画方法,并利用其刻画了渤海湾盆地歧口凹陷港东断裂与沙河街组一段中亚段(简称沙一中亚段)、东营组二段(简称东二段)和明化镇组区域性泥岩盖层配置组合油气运聚空间纵向分布,结果表明:港东断裂与沙一中亚段、东二段和明化镇组区域性泥岩盖层配置组合沙一下亚段油气运聚空间纵向分布主要在其东部和西部,港东断裂与沙一中亚段、东二段和明化镇组区域性泥岩盖层配置组合东三段和馆陶组油气运聚空间纵向分布主要在其中部。港东断裂与沙一中亚段、东二段和明化镇组配置组合沙一下亚段油气运聚空间纵向分布相对发育,有利于油气运聚成藏,港东断裂与沙一中亚段、东二段和明化镇组配置组合东三段和馆陶组油气运聚空间纵向分布相对不发育,不利于油气运聚成藏,与目前港东断裂处沙一下亚段、东三段和馆陶组内已发现油气分布相吻合,表明该方法用于刻画断盖配置组合下、中、上部油气运聚空间纵向分布是可行的。Objectives:To clarify the law of vertical distribution of oil and gas in the middle and upper part of oil and gasbearing basins under the combination of fault-cap configurations.Methods:based on the research on the characteristics of the closed combination of fault-cap configurations and the vertical distribution of oil and gas transportation and gathering under them,a set of methods for the depiction of the vertical distribution of oil and gas transportation and gathering in the middle and upper part of oil and gas-bearing basins under the combination of fault-cap configurations are established through the superposition of the source rock-rooted fault transmission and gas transmission parts,and the source rock-rooted fault and the upper,middle,and lower part of regional mudstone caprock configurations that are closed and closed parts.It was used to delineate the longitudinal distribution of oil and gas transportation and gathering in the Gangdong fault of the Qikou sag in the Bohai Bay Basin and the regional mudstone caprock configuration combination of the middle part of the 1 st Member of the Shahejie Formation(Es_(1)^(z)),the 2 nd Member of Dongying Formation(Ed_(2))and the Minghuazhen Formation(Nm)in the lower sub-member of the 1st Member of the Shahejie Formation(Es_(1)^(x)).The 3 rd member of the Dongying Formation(Ed_(3))and the Neoproterozoic Guantao Formation(Ng).Results:The results show that the longitudinal distribution of oil and gas transport in the Es_(1)^(z),Ed_(2) and Nm under the combination of Gangdong fault and the Es_(1)^(z),Ed_(2) and Nm is mainly in the east and west,and the longitudinal distribution of oil and gas transport in the Es_(1)^(z),Ed_(2) and Nm under the combination of Gangdong fault and the Es_(1)^(z),Ed_(2) and Nm are mainly in the east and west.The vertical distribution of oil and gas transport in Ed_(3) and Ng under the combination of the Gangdong fault and the regional mudstone caprock configurations of Es_(1)^(z),Ed_(2) and Nm is mainly located in the middle of them.The ve

关 键 词：断盖配置组合 下、中、上部 油气运聚 纵向分布 刻画方法 

分 类 号：P618.13[天文地球—矿床学]