吐哈盆地侏罗系原油单体烃系列碳同位素研究  

A STABLE CARBON ISOTOPE RESEARCH ON THE HYDROCARBON MANOMER SERIES MOLECULES IN CRUDE OILS AND EXTRACTS OF THE JURASSIC IN TURPAN-HAMI BASIN

作　　者：王大锐[1] 董爱正[1] 蔡笛 

机构地区：[1]中国石油天然气总公司石油勘探开发科学研究院,北京市910信箱实验中心100083

出　　处：《石油勘探与开发》1997年第2期19-21,共3页Petroleum Exploration and Development

摘　　要：原油中单体烃类在线同位素分析是用色谱仪将包括生物标记化合物在内的化合物分离，经燃烧转化为二氧化碳，然后直接送气体同位素质谱仪进行单体烃碳同位素测定。用此项技术分析吐哈盆地台北凹陷4个含油气构造的油、老样品，认为：葡萄沟构造原油与神泉构造原油同源，可能产白煤系地层；胜金口村造原油则与玉果构造原油同源，可能产自泥质烃源岩。分析结果表明，该盆地中即使在较近范围内也存在着不同层系、不同类型、彼此封隔性较好的烃源岩。The on-line carbon isotope analysis system (GC-C-MS) consists of a gas chromatograph used for separating hydrocarbons into different molecules. After burning in an oven, these molecules produce CO2 and water. The water is successively removed,while CO2 is analyzed through mass spectrometry. The system has been used to study the hydrocarbon monomer series molecules in crude oils and extracts of the Jurassic from four oil-bearing structures of north sag in the Turpan-Hafor basin. It is considered that the oils in Putaogou and Shenquan structures are of the same source, likely generated from coal measure strata, however, the oils in Shengjinkou and Yuguo structures, although also of the same source, are Possibly generated from argillaceous source rocks, which suggests that there are better closed source rocks of different strata and types in the studied area although the structures are closely distributed in the sag.

关 键 词：侏罗纪 油源对比 碳同位素 正构烷烃 油气生成 

分 类 号：P618.130.1[天文地球—矿床学]