霸县凹陷文安斜坡油气富集规律及主控因素  

Rule and main control factor of hydrocarbon enrichment in Wen′an slope,Baxian Depression

作　　者：赵贤正 李宝刚[2] 卢学军 董雄英 王海潮 

机构地区：[1]中国石油华北油田分公司,河北任丘062550 [2]中国石油大学(华东)地球资源与信息学院,山东东营257061

出　　处：《断块油气田》2011年第6期730-734,共5页Fault-Block Oil & Gas Field

基　　金：中国石油重大科研攻关项目"冀中坳陷油气勘探新领域地质特征研究"(2008B-0303)资助

摘　　要：对霸县凹陷文安斜坡中北部和南部的油气成藏特点、油气富集规律及主控因素的研究结果表明:该斜坡为霸县凹陷中紧邻多个生油洼陷的正向构造单元,是油气区域运移的指向;纵向上油气主要富集于前第三系潜山和沙二、沙三段地层中,平面上主要富集于文安斜坡中北部的正向构造单元中;中北部油气富集层位深且集中,南部富集层位相对较浅且规模小,凝析油主要分布在北部奥陶系和石炭系潜山中,油藏类型也具有一定的展布规律。鼻状构造背景控制油气运移的指向,油气源条件制约油气的富集程度,断层、储盖组合及地层不整合控制油气的运移及聚集。The characteristics of hydrocarbon accumulation, rules and main control factors of hydrocarbon enrichment are analyzed in the middle-north part and southern part of Wen＇ an slope, Baxian Depression. Study result shows that the slope is a positive element that is adjacent to multiple oil-generation sags, and is the target of regional hydrocarbon migration. Hydrocarbon are mainly concentrated in the buried hills and the second member and the third member of Shahejie Formation in Pre-Tertiary in vertical direction, and in the positive element in the middle-north part of Wen＇an slope in plane. Oil and gas enrichment zones are deep in the middle-north part, and are shallow with small scale in the southern part. Condensate oil primarily distributes in the buried hills of northern Ordovician and Carboniferous and reservoir type indicates definite distribution rules. Nose structure background controls the direction of hydrocarbon migration and oil and gas source conditions dominate the degree of hydrocarbon accumulation. Faults, reservoir-seal assemblages and stratigraphic unconformity controls the migration and accumulation of oil and gas.

关 键 词：成藏条件 油气聚集 控制因素 文安斜坡 霸县凹陷 

分 类 号：TE122.3[石油与天然气工程—油气勘探]