柴达木东部侏罗系源岩生油组分荧光特征

通过显微荧光分析与光度学研究 ,探讨了柴达木盆地东部侏罗系源岩的生烃意义 ,指出了其主要生油组分的类型、特征、生烃贡献、热演化特征及源岩中存在的排烃现象。研究表明 ,柴达木盆地东部侏罗系源岩有暗色泥岩、油页岩、煤及碳质泥岩等 4种类型 ,其中生油组分含量与生油组分种类存在着显著差别。主要生油组分为腐泥组、壳质组和矿物 -沥青基质 ,生油组分荧光特征差异是其生烃潜力大小、热演化程度及降解情况的综合反映。生油组分荧光特征反映出该区源岩整体处于低熟阶段 ,对于寻找油气资源勘探靶区具有指导意义

Fluorescence characteristics of oil-generating maceral of Jurassic source rock in eastern Qaidam basin

Through the microscopic fluorescence analysis and the photometry, discussed the hydrocarbon bearing significance of Jurassic oil source rock in eastern Qaidam basin. All its characteristics of the main oil bearing elements such as the maceral types, the hydrocarbon generating contribution, the thermal evolution and the hydrocarbon exclusion phenomena etc. were pointed out. It was demonstrated that the source rock of this area included the dark mudstone, oil shale, coal and carbonaceous mudstone etc. which had the different content of oil bearing maceral and the different maceral classes, the main oil bearing maceral were sapropelic group, exinite, maceral bitumen groundmass etc., the fluorescence diversity of the maceral reflected its oil potential, thermal evolution degree and degradation, and the fluorescence characteristics of the main oil bearing maceral explained this area's source rock is in low mature stage.