准噶尔盆地西北缘乌-夏断裂带油气成藏组合特征  

Oil-gas plays characteristics analysis of Wu-xia fault belt,the northwestern margin in Junggar Bain

作　　者：辛也[1] 王伟锋[1] 吴孔友[1] 

机构地区：[1]中国石油大学地球资源与信息学院,山东青岛266555

出　　处：《中国石油大学学报（自然科学版）》2011年第2期32-38,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家'973'重大基础研究发展计划项目(2006CB202302);中国石油科技创新基金项目(2008D-5006-01-06)

摘　　要：依据油气成藏组合理论,结合前人油源对比资料并通过储层、区域盖层及油气藏特征分析,对准噶尔盆地西北缘乌-夏断裂带油气成藏组合特征及油气富集区带进行研究。结果表明:乌-夏断裂带可划分为源内自生自储油气成藏组合和源上下生上储油气成藏组合;存在源内早期成藏垂相运聚、近源早期成藏侧向运聚和远源晚期成藏混向运聚3类油气成藏模式;构造圈闭发育和油源断裂是成藏组合油气成藏的关键因素,在剩余压力作用下油气沿断裂向上运移并沿不整合面和骨架砂体横向运移,为油气成藏提供充足油源。According to oil-gas play theory,the oil-gas play characteristics and oil accumulation zone were studied by the oil-source comparing,reservoir characters,capping formations and oil-gas reservoir characters analysis of Wu-xia fault belt,the northwestern margin in Junggar Basin.The results show that the oil-gas play can be divided into two types of oil play（above-source oil play and inner-source oil play） in Wu-xia fault belt.Three types of hydrocarbon accumulation mode are early inner source-rock accumulation reservoir in which oil migrated by vertical fault,early nearly source-rock accumulation reservoir in which oil migrated by horizontal sand-body and unconformity,later far source-rock accumulation reservoir in which oil migrated by unconformity and fault.The key factors of the oil-gas accumulation are the development of structural trap and oil-source fault.Under the remaining pressure,oil migrates upward along oil-source fault and migrates laterally along unconformity surface and sand-body which provides adequate oil for hydrocarbon accumulation.

关 键 词：油气成藏组合 油源断裂 构造圈闭 乌-夏断裂带 准噶尔盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]