The geochemical characteristics and origin of crude oils in the Kekeya Oilfield, Xinjiang, China

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• 作者：Youjun Tang (1) (2)
  Ling Zan (2)
  Dujie Hou (3)
  Zhongyao Xiao (4)
  
• 关键词：biomarker assemblage ; oil ; rock correlation ; Kekeya Oilfield
• 刊名：Chinese Journal of Geochemistry
• 出版年：2008
• 出版时间：December 2008
• 年：2008
• 卷：27
• 期：4
• 页码：420-423
• 全文大小：412KB
• 参考文献：1. Chang Xiangchun, Xue Zelei, Liu Yurui, and Zhang Jinliang (2003) Dynamic systems of petroleum accumulation in the Jinhu Sag [J]. / Bulletin of Mineralogy Petrology and Geochemistry. 22, 319鈥?23.
  2. Peters K.E. and Moldowan M. (1993) / The biomarker Guide: Interpreting Molecular Fossils in Petroleum and Ancient Sediments [M]. Prentice Hall Inc, New Jersey.
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  5. Tang Youjun, Hou Dujie, and Xu Youde (2007) The geochemical characteristics and origin of gas and condensate oil in Kekeya gas field, Tarim Basin [J]. / Marine Origin Petroleum Geology. 12, 33鈥?6.
  6. Tang Youjun, Hou Dujie, Xiao Zhongyao, and Xu Youde (2006) Geochemical characteristics and origin of gas in Kekeya field [J]. / Offshore Oil. 26, 18鈥?2.
  7. Zhang Chunming, Li Sitian, Yang Jiamin, Yang Shangkun, and Wang Jianrong (2004) Petroleum migration and mixing in the Pearl River Mouth Basin, South China Sea [J]. / Marine and Petroleum Geology. 21, 215鈥?24. CrossRef
  8. Zhang Chunming, Zhao Hongjing, Gao Kunshun, and Yang Shaokun (2007) The distribution of dimethylcarbazoles in oils from the Pearl River Mouth Basin, South China Sea [J]. / Chinese Journal of Geochemistry. 26, 301鈥?04. CrossRef
  
• 作者单位：Youjun Tang (1) (2)
  Ling Zan (2)
  Dujie Hou (3)
  Zhongyao Xiao (4)
  
  1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Department of Geochemistry, Yangtze University, Jingzhou, 434023, China
  2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, 102249, China
  3. Department of Petroleum Geology, China University of Geosciences, Beijing, 100083, China
  4. Exploration and Development Research Institute of Tarim Oil field Company, Petrochina, Korla, 841000, China
  
• ISSN：1993-0364

文摘

GC/MS and GC/MS/MS techniques were employed to describe the characteristics of biomarker assemblages in two sets of hydrocarbon source rocks, Jurassic and Permian, in southwestern Tarim, and the parameters for the classification of the two sets of hydrocarbon source rocks have been established. It is found that diahopane and C30-unknown terpane are abundant in Permian samples, the contents of diahopane in Jurassic samples are relatively low, and terpenoids have been detected in Jurassic samples but not in Permian source rock samples. Kekeya crude oils are abundant in diahopane and C30-unknown terpane. The results of fine oil-rock correlation indicated that Kekeya crude oils were derived mainly from the Permian hydrocarbon source rocks. However, a small amount of diterpenoid was detected in the crude oils, indicating that the Jurassic hydrocarbon source rocks also made a certain contribution to Kekeya crude oils.