东濮凹陷邢庄地区原油地球化学特征  

Geochemical Characteristics of Crude Oil in Xingzhuang Region in Dongpu Depression

作　　者：李林强 林壬子[1] 

机构地区：[1]石油大学资源与信息学院

出　　处：《断块油气田》2004年第6期1-3,共3页Fault-Block Oil & Gas Field

摘　　要：通过对东濮凹陷邢庄地区原油和储层抽提物的GC和GC -MS检测 ,探讨了该区原油的地球化学特征。分析结果表明 ,邢庄地区原油具有正构烷烃奇偶优势和较低甾、萜烷异构体比值 ,属于典型的低熟原油。该区原油具有较低的姥鲛烷 /植烷比值和较高的伽马蜡烷含量 ,反映了其生烃母质形成于半咸水 -咸水的还原环境 ,而相对较高的C2 7/C2 9αααR规则甾烷比值则揭示了原油母源的物源输入以水生生物为主。The crude oil and extracts of reservoir in Xingzhuang region in Dongpu depression are detected by GC or GC MS techniques. The analysis results show that the maturity of oil in Xingzhuang region is lower and most of oils still keep odd even predominance and low ratios of sterane and terpane maturity index. The low Pristane/Phytane ratio and the high Gammacerane content indicates the source rocks of crude oil forming in brackish saline deoxidize environment,and the high C 27 /C 29 αααR steranes ratio indicates the main source input of source rock is aquatic biology.

关 键 词：东濮凹陷 低成熟油 地球化学特征 甾烷 萜烷 

分 类 号：TE347[石油与天然气工程—油气田开发工程]