东濮凹陷北部芳烃色谱-质谱分析及石油地质应用

芳烃生物标志物热稳定性好、抗降解能力强，指标参数可持续应用到干气阶段，尤其是东濮凹陷深层热演化程度高。开展芳烃生物标志物研究就更为重要。通过对东濮凹陷北部深层原油及烃源岩芳烃气相色谱-质谱分析,鉴定出约200种芳烃系列化合物．确立出芳烃生物标志物在研究区有效的石油地质应用指标。研究认为，该区芳烃组成以三环芳烃为主，浅层芳甾类化合物较多，三芴系列相对组成中以高硫芴为特征，三方甾烷参数、甲基菲指数及烷基二苯并噻吩化合物比值均可作为该区有机质热演化特征研究的有用指标。

GC-MS analysis of aromatic hydrocarbon and its application in petroleum geology in north area of Dongpu Depression

Aromatic hydrocarbon biomarkers have good heat stability and strong anti-degradation ability. Index parameters can persistently apply to dry gas stage. Specially, in Dongpu Depression, the degree of heat evolution is high in deep layer, so it is important to study the aromatie hydrocarbon biomarkers. Through analyzing the deep oil and the GC-MS of aromatic hydrocarbon of hydrocarbon source rock in the deep layer in north area of Dongpu Depression, this paper identifies two hundreds of aromatic hydrocarbon chemical compounds and determines the effective index for the applieation of aromatic hydrocarbon biomarkers in petroleum geology. Study shows that in the aromatic composition of this area, the high content of tricyelic aromatic hydrocarbon is the main composition, the eontent of aromatic steroid compound is high in the shallow layer, dibenzothiophene is obvious in three fluorine series. The compound ratio values of tri-aromatie sterane parameter, methylphenanthrene index and alkyldibcnzothiophene are usefal indexes in the study of heat evolution characteristics of organic matter in this area.