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通过对吐哈盆地23个原油样品进行轻烃组分、Mango参数和成熟度等研究,认识到原油富含环烷烃,直链烷烃含量低,以陆源有机质为主;甲基环己烷指标(MCH-I)指示出原油的干酪根类型为Ⅲ型;N61/N51值和(N61+N51)/(P2+P3+N2)值等不同结构类型轻烃化合物的比值显示原油属于陆相油;C7化合物组成中甲基环己烷>50%,二甲基环戊烷<9%,正庚烷<40%,是煤成油和混源油的特征;根据石蜡指数和庚烷值认为吐哈盆地原油属正常原油,原油生成时最大温度介于91.16～102.22℃之间。
By studying the light hydrocarbon components, Mango parameters and maturity of 23 crude oil samples in the Turpan-Hami basin, it is recognized that the crude oil is rich in naphthenes and low in linear alkanes and mainly of terrigenous organic matter. The methylcyclohexane index MCH-I) indicates that the kerogen type of crude oil is type III; the ratios of N61 / N51 values and (N61 + N51) / (P2 + P3 + N2) values of different structural types of light hydrocarbon compounds indicate that the crude oil belongs to the continental oil; The composition of C7 is composed of methylcyclohexane> 50%, dimethylcyclopentane <9%, n-heptane <40%, which is characteristic of coal-derived oil and mixed source oil. According to the paraffin index and the heptane value, Ha basin crude oil is normal crude oil, the maximum temperature of the formation of crude oil between 91.16 ~ 102.22 ℃.