榆树林东部地区扶杨油层成藏特征研究

在对榆树林东部地区扶杨油层层序地层、构造特征、沉积特征、储层特征研究的基础上,详细分析了该区成藏条件、油藏类型、成藏模式和油水分布规律。充足的油源、良好的砂体、丰富的圈闭、良好的输导体系和稳定的区域性盖层为研究区创造了良好的油气成藏条件;断层和岩性组合形成的圈闭类型是本区最有利的成藏圈闭;源内垂向运移成藏和源外侧向运移成藏是本区主要的两种成藏模式。考虑了砂体分布、构造特征、油气分布规律、油源方向等因素,将研究区划分为两个有利油气富集区和一个风险区。

Accumulation characteristics research of Fuyang oil layers in eastern area of Yushulin

Based on the research of sequence stratigraphy, structure characteristics, sedimentary characteristics and reservoir characteristics of Fuyang oil layers in eastern area of Yushulin, the detailed analysis of accumulation conditions, reservoir types and accumulation modes and oil-water distribution regularity have been carried out. The results show the area has abundant oil sources, good sand bodies, rich traps, good petroleum migration pathways and stable regional caprock, which can provide good accumulation conditions for research area. Besides, the results indicate the combination type of fault and lithology traps is most favorable for hydrocarbon accumulation and there are two main accumulation modes, one is the vertical migration inside source rock and the other is lateral migration outside source rock. By considering sand bodies' distribution, structural characteristics, hydrocarbon distribution regularity and oil sources direction, the research area can be divided into two favorable hydrocarbon accumulation zones and one risk zone.