基于原油配比混合实验的显微荧光光谱特征研究（英文）

发布时间：2018-05-06 13:58

本文选题：显微荧光光谱 + 混源　；参考：《光谱学与光谱分析》2016年09期

【摘要】：显微荧光光谱已经成为流体包裹体系统测试分析中较为成熟的一项技术,可用于区分不同类型的原油与油包裹体,从而为研究含油气盆地的油气成藏历史提供重要依据。不同来源的原油在运聚的过程中可能会发生不同程度的混合作用,为了有效识别这一类地质过程,基于不同比例的原油配比混合实验,研究原油混合后的显微荧光光谱的具体变化特征。结果表明:原油混源使得显微荧光光谱参数λmax,QF-535和CIE-XY发生了非线性变化,具体表现为混源后原油的荧光光谱参数均介于两个端元油之间,混源油中某一端元油的比例越大,其荧光光谱参数越靠近这一端元油。在CIE-XY色品图中主要表现为非线性渐变的荧光颜色特征。光谱谱形的改变主要表现为谱形由"单峰型"变为"双峰型"和"三峰型",同时主峰波长和次峰波长保留了两个端元油的信息;QF-535与混源比例可建立曲线用来定量计算两端元油的相对贡献度。综合上述荧光光谱参数和谱形的变化特征,利用原油和油包裹体的显微荧光分析,识别出东海盆地西湖凹陷A气田有三种不同类型原油充注,中间还发生了一次原油混源作用,即蓝绿色荧光原油和黄色荧光原油发生了混合,定量计算其混源程度为介于47%~55%。
[Abstract]:Microfluorescence spectroscopy has become a mature technique in the measurement and analysis of fluid inclusions, which can be used to distinguish different types of crude oil from oil inclusions, thus providing an important basis for the study of hydrocarbon accumulation history in petroliferous basins. In order to identify this kind of geological process effectively, crude oil from different sources may be mixed in different degrees during the process of migration and accumulation. The specific variation characteristics of microfluorescence spectrum of crude oil after mixing are studied. The results show that the fluorescence spectrum parameters 位 _ max _ Q _ F _ 535 and CIE-XY have nonlinear variation due to the mixing of crude oil, which shows that the fluorescence spectrum parameters of the mixed source oil are between the two terminal oils, and the ratio of one end of the mixed source oil is larger. The fluorescence spectral parameters are closer to this end of the oil. In the CIE-XY color map, the fluorescence color is mainly characterized by nonlinear gradual change. The change of spectral form mainly shows that the spectral form changes from "single peak" to "double peak" and "three-peak". Meanwhile, the main peak wavelength and secondary peak wavelength retain the information of two terminal oil, QF-535 and mixed source ratio curve can be established for quantitative analysis. Calculate the relative contribution of the two ends of the oil. Based on the variation characteristics of the above fluorescence spectrum parameters and spectral shapes, and by using the microscopic fluorescence analysis of crude oil and oil inclusions, it is recognized that there are three different types of crude oil filling in A gas field in Xihu sag, East China Sea basin, and there is a crude oil mixing process in the middle. The mixture of blue-green oil and yellow oil is calculated to be between 4755 and 47.55.
【作者单位】：中国地质大学构造与油气资源教育部重点实验室;甘肃省油气资源研究重点实验室/中国科学院地质与地球物理研究所油气资源研究重点实验室;中国科学院大学;中海石油(中国)有限公司湛江分公司;
【基金】：The National Science and Technology Projects(2011ZX05023-004-010) The Open Fund of Key Lab of Tectonics and Petroleum Resource of Educational Ministry,China University of Geosciences(TPR-2015-11)
【分类号】：P618.13

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