松辽盆地北部徐家围子地区葡萄花油层成藏模式及主控因素分析

The Pool-Forming Pattern and the Analysis of Main Control Factors of Putaohua Oillayer in Xujiaweizi Zone of the Northern Songliao Basin

徐家围子油田油气藏类型有断层——岩性油气藏、断块油气藏、构造——岩性油气藏、岩性油气藏等4种油气藏类型,主要目的层为葡萄花油层。研究认为,主要的油气藏类型是断层——岩性油气藏和断块油气藏,并不是通常所认为的以纯岩性油气藏为主。在研究油气藏类型及特征的基础上,通过油气分布规律和成藏期次的研究,总结出徐家围子地区油气运聚成藏的4种模式,并确定了油气成藏及分布的主控因素。

There are 4 kinds of oil--and--gas reservoir in Xujiaweizi zone：fault--lithology reservoir, fault block reservoir, tectonic--lithology reservoir and lithology reservoir. The main target stratum is Putaohua oil layer. According to my research, the main styles of oil--and--gas reservior are fault--lithology researvior and fault block researvior,not the pure lithology researvior. Based on reservoir styles and characteristics ,through analyzing the distributed law and pool forming period,I summarize 4 kinds of pool forming pattern of hydrocarbon migration and accumulation and confirm main control factors of pool forming and distribution.