摘要
综合烃源岩生排烃史、盖层封闭形成史、圈闭形成史、断裂活动史和油气充注史得到 ,乌尔逊凹陷油气成藏的主要时期应为伊敏组沉积末期—青元岗组沉积早期 .根据乌尔逊凹陷油气藏类型、油气成藏条件及其时空匹配关系和油气成藏期次及过程 ,认为乌尔逊凹陷油气成藏具有 3种模式 :源内砂岩透镜体或裂缝圈闭油气运聚成藏 ;油气沿断层垂向运移于断块或断层遮挡圈闭成藏 ;油气沿砂体短距离侧向运移于构造 -岩性圈闭成藏 .
Taking into account the generation and expulsion hydrocarbon history of sourcerocks, the seal formation history of caprock, the formation history of traps, the active history of faults and the supplying history of oil or gas, we consider the main formation period to be from the end of K_1y to the early of K_2q. According to the types of oil or gas reservoirs, formation conditions of oil or gas and their matching relations in space and time and formation periods and process of oil or gas reservoirs, this paper puts forward three kinds of oil or gas accumulation models, they are the model of oil or gas migrating and accumulating in lens of sandstone or fracture traps in sourcerocks, the model of oil or gas accumulating in fault-block or faulted seal traps migrating vertically through fault, and the model of oil or gas accumulating in structure lithology traps migrating laterally through sandstone.
出处
《大庆石油学院学报》
CAS
北大核心
2004年第3期83-85,共3页
Journal of Daqing Petroleum Institute
基金
国家重点基础研究资助项目 ( 2 0 0 1CB2 0 910 4)
关键词
乌尔逊凹陷
油气
成藏期次
成藏模式
Wuerxun depression
oil or gas
accumulation periods
accumulation models
