【摘要】 <正> 地质历史时期中生油母质和向油气演化的差异以及油气在运移过程中的变化,使不同层位的原油组成具有各自的特征。因此,分析和研究原油中烃类分布的总特征,对探讨油源及油气运移等问题具有十分重要的意义,也是石油有机地球化学研究的一个重要内容。目前,国内外一般采用的研究方法,是先将原油通过氧化铝或铝矾土色谱柱分离为烷烃、芳烃和非烃馏份,其中烷烃馏份又用尿素络合或分子筛吸附的方法分离为正烷烃和更多还原

【Abstract】 In the present paper is recommended a new method of directly injecting crude oil into a gas chromatograph for gas chromatographic analysis, which has been proved valid in the analysis and investigation of crude oil samples from different formations in China. In terms of the distribution patterns of hydrocarbons in "total hydrocarbon" chromatogram and the relative values of their major characteristic peaks, types of crude oil of different formations from a same region can be readily recognized and a comparison of different oil sources can also be made. Meanwhile, it might be adopted to evaluate the geological conditions in favour of oil preservation.更多还原