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从芳烃组成上，塔里木原油可划分为塔北台地相原油、塔中局限性海湾（泻湖）相原油和湖相油、煤成油四种成因类型。塔中原油以高二苯并噻吩系列（＞３０％）和低菲系列（＜１５％）为特征，区别于塔北海相原油；煤成油则以高联苯（＞２０％）、二苯并呋喃系列（＞５％）有别于湖相油。这些不同成因原油的烷基萘、菲异构体分布明显不同。海相油的１，２，５－／１，３，６－ＴＭＮ小于０．３，而湖相油和煤成油的此比值分别大于０．３和０．６。原油的１，２，７－／１，３，７－ＴＭＮ可识别源岩的地质时代。与海相油相比，陆相油尤其是煤成油的９－甲基菲占优势，与国外的研究结果不同。
From the aromatic composition, the Tarim crude oil can be divided into the Paleosai platform crude oil, the tower of the Gulf (Lagoon) limited phase of the oil and lacustrine oil, coal into the oil into four types of causes. The crude oil in Tazhong is characterized by high dibenzothiophene series (> 30%) and low-phenanthrene series (<15%), which is different from that of Taibei marine crude oil. Furan series (> 5%) is different from lakeside oil. The distribution of alkyl naphthalene and phenanthrene is obviously different for these different crude oils. The 1,2,5- / 1,3,6-TMN of marine oil is less than 0.3, while the ratio of lacustrine oil to coal oil formation is greater than 0.3 and 0.6, respectively. Crude oil 1,2,7- / 1,3,7-TMN identifies the geological age of source rocks. Compared with the marine oil, continental oil, especially coal-oil 9-methylphenanthrene dominated, with foreign research results are different.