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无定形干酪根在烃源岩中占有极其重要的地位,是成烃作用最主要的物质基础,其含量一般占总有机质的70%以上.然而,其研究程度最低,分类术语也较混乱,对烃源岩生烃评价有很大影响.因此,加强无定形干酪根光性、成因及生烃潜力的综合研究对油气勘探具有重要意义.本研究应用显微荧光分析技术对我国典型陆相烃源岩无定形干酪根荧光变化规律进行了系统研究,提出应用二项荧光参数I_(546)~(20)(激发20min后546nm处荧光强度)与R(I_(546)~(20)/I_(546)~0,激发20min荧光强度与开始激发时荧光强度之比)划分其类型的方法.在此基础上,应用RockEval研究不同类型无定形干酪根的生烃潜力
The amorphous kerogen occupies a very important position in the source rock and is the most important material basis for hydrocarbon generation, which accounts for more than 70% of the total organic matter. However, the study degree is the lowest and the classification terminology is also chaotic. Therefore, it is of great significance for oil and gas exploration to comprehensively study the phototropism, genesis and hydrocarbon generation potential of amorphous kerogen.In this study, the micro-fluorescence spectroscopy The results show that the fluorescence intensity of 547nm and the fluorescence intensity of Rm (I_ (546) ~ (20) / I_ 546) ~ 0, the ratio of the fluorescence intensity at 20min excitation to the fluorescence intensity at the start of excitation) .On the basis of this, RockEval was used to study the hydrocarbon generation potential of different types of amorphous kerogen