流体包裹体在研究柴北缘油气运移中的应用

流体包裹体分析是研究油气运移和成藏期次等问题的一种有效方法.根据对流体包裹体均一温度、盐度、有机包裹体中的生物标志物特征研究及有机包裹体的色谱、色-质谱分析,恢复储集岩中初始(古)油气组分的地球化学特征,揭示储集岩中油气组分地球化学演化过程,追踪油气藏的油源及油气的热演化程度,最后分析柴北缘油气的充注期次认为,冷湖构造带和南八仙油气田在成岩演化及油气的充注、运移方面存在一定差异,其中冷湖构造带内冷七1井N12地层只有一期油气充注,潜参1井、冷四1井和深86井均有E3和N1-N12两期油气充注,而南八仙油气田仙5、仙6、仙7井样品中两期充注的油气分别形成于E3-N1和N2时期.

The application of fluid inclusion to the research on petroleum migration of North Qaidam Basin

The analysis of fluid inclusion is an effective method to study petroleum migration and reservoir generation time.Based on the analysis of homogeneous temperature,salinity,biomarker,color spectrum and color-mass spectrum in fluid inclusion,the geochemical feature of primary(paleo) hydrocarbon component of reservoirs was restored,their geochemical evolution was uncovered,and oil sources and hydrocarbon thermal evolution were both tracked in this paper.The study of filling periods and times proposes that there are certain differences between Cold Lake structural belt and Nanbaxian reservoir in reservoir generation evolution and petroleum filling and migration.N12 zone of LengVII-1 in Cold Lake structural belt only has one period of hydrocarbon filling,and Well Qianshen-1,LengIV-1 and Shen-86 all have two periods of hydrocarbon filling,namely,E3 and N1-N12.The hydrocarbon of samples from Xian-5,Xian-6 and Xian-7 in Nanbaxin reservoir forms at E3-N1 and N2 periods,respectively.