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原油族群、组群的划分是油藏地球化学研究的基础内容,是从地球化学角度对原油进行的一种成因分类。原油族群、组群划分的目的是进行油源对比、原油非均质性与分隔性研究。本文介绍了原油族群和组群的划分方法,主要有数理统计法(包括聚类分析法和因子分析法)和常规法(包括谱图直接对比法、生物标志物参数相关法、同位素对比法和原油性质相关对比法)。目前国内外在原油族群划分中使用最为普遍的是生物标志物指标和参数。
The classification of crude oil group and group is the basic content of the research on reservoir geochemistry. It is a genetic classification of crude oil from the perspective of geochemistry. Crude oil group, the purpose of grouping is to carry out oil source contrast, crude oil heterogeneity and separability. This paper introduces the method of dividing the crude oil group and the group, mainly including the mathematical statistics (including cluster analysis and factor analysis) and the conventional method (including direct comparison of spectra, correlation of biomarker parameters, isotope comparison and Crude oil related to the nature of the law). At present, the most common use of crude oil in the world is the biomarker index and parameters.