大庆长垣以西地区黑帝庙油层油气成藏主控因素分析及有利区带预测

Reservoir forming factors and favorable zones in Heidimiao, west of Changyuan, Daqing

在全面研究松辽盆地北部大庆长垣以西地区黑帝庙油层油气成藏条件的基础上 ,提出黑帝庙油层油气成藏的 3个主控因素 :嫩一段成熟烃源岩分布范围宏观上控制了黑帝庙油层的油气分布 ;具良好储集性能的河道、河口坝和湖底扇砂体及强封盖能力的泥岩隔层是黑帝庙油层成藏的关键 ;晚期形成的T0 6、T2 -T0 6、T1-T0 6断层对黑帝庙油层油气成藏起主要控制作用。烃源岩、砂体与构造、断层的匹配关系研究结果表明 ,预测研究区存在

Reservoir forming conditions in Heidimiao reservoir, west of Changyuan, Daqing, Songliao Basin are fully studied. It is put forward that there were 3 major controlling factors of forming Heidimiao reservoir: the distribution scale of mature hydrocarbon source rock in Nen1 member had macroscopically controlled the oil and gas distribution in Heidimiao reservoir; river channel, river mouth bar and sublacastrine fan, which had good reservoir property, and shale interbed, which had strong sealing ability, are key factors of forming Heidimiao reservoir; fault T06, T2-T06 and T1-T06 formed in later period played a main controlling role on forming of the reservoir. The study of source rock, sand, structure and fault relationship shows that there are 4 favorable oil and gas accumulations and 1 prospect in the study area.