| 轮南14井原油正构烷烃和类异戊二烯单体碳同位素研究 |
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| 引用本文： | 卢鸿,柴平霞,孙永革,彭平安.轮南14井原油正构烷烃和类异戊二烯单体碳同位素研究[J].沉积学报,2002,20(3):477-504. |
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| 作者姓名： | 卢鸿 柴平霞 孙永革 彭平安 |
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| 作者单位： | 中国科学院广州地球化学研究所,有机地球化学国家重点实验室,广州,510640 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，中国科学院知识创新工程项目，G1999043308，，， |
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| 摘 要： | 通过对轮南14井正构烷烃和类异戊二烯烃的单体碳同位素分析,证实该井奥陶系和石炭系油藏具有相同或相似的油源,而三叠系油藏与奥陶系、石炭系油藏具有较大的碳同位素差异,反映其油源不同.在奥陶系、石炭系和三叠系油藏中,均呈现出类异戊二烯烃碳同位素值略重于同碳数正构烷烃的特征,结合前人研究成果,从生物合成途径及分子内碳同位素的分布角度出发得到合理的解释.
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| 关 键 词： | 轮南14井 正构烷烃 类异戊二烯烃 单体碳同位素 |
| 文章编号： | 1000-0550(2002)03-0477-05 |
| 收稿时间： | 2001-07-03 |
Study on Stable Carbon Isotopic Compositions of n-alkanes and Isoprenoids for Crude Oils from Well Lunnan 14, Tarim Basin |
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| LU Hong CHAI Ping-xia,SUN Yong-ge PENG Ping-an.Study on Stable Carbon Isotopic Compositions of n-alkanes and Isoprenoids for Crude Oils from Well Lunnan 14, Tarim Basin[J].Acta Sedimentologica Sinica,2002,20(3):477-504. |
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| Authors: | LU Hong CHAI Ping-xia SUN Yong-ge PENG Ping-an |
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| Institution: | State Key Laboratory of Organic Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510640 |
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| Abstract: | Compound-specific stable carbon isotope analysis of n-alkanes and isoprenoids were conducted for crude oils from Well Lunnan 14, Lunnan oilfield, Tarim Basin, NW China. It can be seen that the crude oils from the Ordovician and Carboniferous productive horizons shared the same organic matter inputs while the Triassic crude oil had different sources of organic matter input. In addition, the carbon isotope composition of isoprenoids is isotopically heavier than that of n-alkanes with the same carbon number. It is presumed that the biosynthesis pathway and intramolecular distribution of 13C might theoretically account for the recognized relationship between n-alkanes and isoprenoids in terms of carbon isotope compositions. |
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| Keywords: | Well Lunnan 14 n-alkanes isoprenoids compound-specific stable carbon isotope compositions |
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