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Chinese Science Bulletin

, Volume 49, Supplement 1, pp 107–114 | Cite as

The generation and accumulation of natural gas from Yinan 2 gas pool in Kuqa Depression

  • Xianqing Li
  • Xianming Xiao
  • Yongchun Tang
  • Zhongyao Xiao
  • Jingkui Mi
  • Dehan Liu
  • Jiagui Shen
  • Jinzhong Liu
Articles

Abstract

By using the methods of hydrocarbon generation kinetics and carbon isotope kinetics, combined with geological background of natural gas pool formation, the generation and accumulation of natural gas from Yinan 2 gas pool was studied in Kuqa Depression of the Tarim Basin. Natural gas of Yinan 2 gas pool is mainly derived from Middle and Lower Jurassic coal-bearing source rocks, and generally belongs to long time-accumulated gas. It is suggested that Yinan 2 gas is chiefly accumulated in the last 5 Ma, itsR 0 ranges from 1.25% to 1.95%, and the loss rate of natural gas is about 25%–30%. This work not only complements and reduces the deficiency of formation model of natural gas pools which traditionally depends on the matching relationships between source rock, reservoir, cap rock, and trap, but also is a useful reference in the study of other gas pools.

Keywords

natural gas formation hydrocarbon generation kinetics carbon isotope source rock Yinan 2 gas pool Kuqa Depression 

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Copyright information

© Science in China Press 2004

Authors and Affiliations

  • Xianqing Li
    • 1
    • 2
  • Xianming Xiao
    • 1
  • Yongchun Tang
    • 3
  • Zhongyao Xiao
    • 4
  • Jingkui Mi
    • 1
  • Dehan Liu
    • 1
  • Jiagui Shen
    • 1
  • Jinzhong Liu
    • 1
  1. 1.The State Key Laboratory of Organic Geochemistry, Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhouChina
  2. 2.Key Laboratory of Coal Resources, Ministry of EducationChina University of Mining and TechnologyBeijingChina
  3. 3.The Research Center of Petroleum Energy and EnvironmentCalifornia Engineer and Technology CollegeWalnutUSA
  4. 4.Research Institute of Exploration and DevelopmentTarim Oil Field Sub-Company, PetroChinaKorlaChina

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