东濮凹陷白庙地区天然气及凝析油地球化学特征及成因  

Geochemistry and Origin of Oil and Natural Gas in Baimiao Area of Dongpu Depression

作　　者：罗小平[1] 沈忠民[1] 彭渤莹[2] 王又杰[2] 林壬子[3] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,成都610059 [2]中原油田分公司勘探开发科学研究院,河南濮阳457001 [3]石油大学地球科学系,北京昌平102200

出　　处：《沉积学报》2004年第B06期50-55,共6页Acta Sedimentologica Sinica

摘　　要：白庙构造是东濮凹陷南部地区的一个含凝析油的富气构造。在研究油藏基本地质特征的基础上,应用多种地球化学手段研究了气藏中天然气组分、甲烷同位素及惰性气体同位素变化规律、凝析油族组成、饱和烃色谱、色质生物标志物特征,进行了油气源分析,探讨了气藏的形成时间与次序,白庙气藏具有多源、多期、复合成藏的特点。Baimiao structure in the south of Dongpu depression is a trap with rich natural gas and condensate. The reservoir has some characters of many source rocks and many periods of formation and interruption. Based on the study of primarily geolegical characters, this paper investigates the variation law of carbon isotope of methane in natural gas and density of condensate as well as the character of biomarkers in condensate, which helps discussion on origin of oil and gas and their migration direction and time to the whole reservoir, together with applying of more geochemical methods in authigenic minerals.

关 键 词：天然气 凝析油 地球化学 同位素 

分 类 号：TE122.111[石油与天然气工程—油气勘探] P593[天文地球—地球化学]