哈得逊与轮南地区原油碳同位素特征及影响因素  

Carbon Isotope Characteristics and the Influencing Factors of the Oils from Lunnan and Hadexun Oil Fields

作　　者：米敬奎[1] 张水昌[1] 陈建平[1] 张斌[1] 李贤庆[2] 

机构地区：[1]中国石油勘探开发研究院实验研究中心,北京100083 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《沉积学报》2008年第6期1071-1076,共6页Acta Sedimentologica Sinica

基　　金：国家973基金项目课题(编号:2006CB202307);国家自然科学基金项目(批准号:40572085)资助

摘　　要：轮南地区与哈得逊地区20个原油的全油碳同位素和正构烷烃单体烃碳同位素的分析结果表明:轮南地区原油的全油碳同位素均大于-32‰,而哈得逊地区原油的全油碳同位素一般小于-32‰;原油正构烷烃单体烃碳同位素也表现出轮南地区重于哈得逊地区的特征。两地区原油碳同位素的这种特征是由于两地区油气成藏过程的差异造成的,轮南地区原油碳同位素比哈得逊地区的原油碳同位素重的主要原因是由于来源于寒武系降解原油的混入,而非油源不同造成的。The analytical results of the whole and the monomer paraffin hydrocarbons carbon isotope of the 20 oils from Lunnan and Hadexun oil fields show that the whole carbon isotope of the oils from Lunnan area is more than - 32‰, and that of the oils from Hadexun area is less than -32‰, the carbon isotope of monomer paraffin hydrocarbons of the oils from Lunnan area is also heavier than that of the oils from Hadexun area. That the carbon isotope of oils from Lunnan area heavier than that of oils from Lunnan area caused the difference between the oil pools formation in the two areas. The main factor resulted in the carbon isotope of oils from Lunnan area heavier than that of oils from Hadexun area is the mixture between the degraded oil from the Cambrian source rock and the oils from Middle-Upper Ordovician source rock, instead of the different source rocks of the oils.

关 键 词：塔里木盆地 轮南油田 哈德逊油田 原油碳同位素 单体烃碳同位素 

分 类 号：P593[天文地球—地球化学] TE122.113[天文地球—地质学]