塔里木盆地塔河油田原油与源岩对比研究

塔河油田是我国迄今为止在古生界海相碳酸盐岩层系中发现的最大的油气田，但是原油的油源目前仍然是一个有争异的问题。对塔河油田原油和寒武系、奥陶系烃源岩进行了地球化学分析，研究了生物标志化合物组成和分布特征，进行了油源对比。原油和烃源岩中正构烷烃、类异戊二烯烃、甾烷和萜烷组成及分布特征，显示了塔河油田原油与寒武系、奥陶系烃源岩具有亲缘关系，这与塔河油田长期成藏和多期成藏，从而允许寒武系、奥陶系烃源岩持续供油的地质事实相符合。研究认为，塔河油田原油与寒武系、奥陶系烃源岩中一些生物标志化合物组成的差异，可能与它们起源于有机质不同演化阶段有关，这一点应在研究具有高演化有机质特征的油源对比时予以重视。

Study of Oil-Source Correlation for Tahe Oilfield of Tarim Basin

Tahe oilfield of Tarim basin is the largest oilfield found in Paleozoic marine carbonate in China so far. However, its oil source is not still ascertained. In this paper, geochemical compositions of the crude oils of Tahe oilfield and Cambrian-Ordovician source rocks were studied, and oil-source correlation was carried out. The compositional and distributional characteristics of n-alkanes, isoprenoid hydrocarbons, steranes and terpanes in crude oils and source rocks indicate that the studied crude oils are ...