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本文应用色谱—质谱联用技术,研究了鄂尔多斯盆地上三迭统、中下保罗统生油岩和原油中的甾烷和萜烷。文中介绍了试验方法并应用分子参数探讨了地球化学问题,研究认为:(1)甾烷、萜烷立体异构物的变化,可确定有机质的成熟度;(2)生物标记化合物,为油源对比的最佳参数;(3)奥利烷的出现与陆相腐殖型母质有关。
In this paper, we studied the sterane and terpane in the Upper Triassic and Middle-Lower Paleozoic source rocks and crude oil in the Ordos Basin by using GC-MS. In this paper, the experimental methods are introduced and the geochemical problems are discussed by using molecular parameters. The results show that: (1) the changes of stereoisomers of steranes and terpanes can confirm the maturity of organic matter; (2) The biomarker compounds are oil source Comparison of the best parameters; (3) the emergence of aurelid and continental humus parent material.