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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2015  >  37(1): 88-91
Liu Yazhao, Wu Minghui, Shi Shengbao, Wang Jie, Li Wei. Differences of nitrogen isotopes in crude oils from different depositional environments[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(1): 88-91. doi: 10.11781/sysydz201501088
Citation: Liu Yazhao, Wu Minghui, Shi Shengbao, Wang Jie, Li Wei. Differences of nitrogen isotopes in crude oils from different depositional environments[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(1): 88-91. doi: 10.11781/sysydz201501088
shu

Differences of nitrogen isotopes in crude oils from different depositional environments

doi: 10.11781/sysydz201501088
  • 1.

    Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China

  • 2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China

  • 3. SINOPEC Petroleum Exploration and Production Research Institute, Beijing 100083, China

  • Received Date: 2013-11-30
  • Rev Recd Date: 2014-11-03
  • Publish Date: 2015-01-28
    Abstract
  • As an important element of oil and organic matter, the contents and isotopes of nitrogen are different due to different sources from different environments and different late diagenetic processes after burial.The contents and isotopes of nitrogen in urea and caffeine show that these nitrogen parameters of samples are highly variable and indicate different depositional environments. The carbon and especially the nitrogen isotopes of crude oils formed in marine environments are lighter than those in continental environments, For samples from the same environment, high-temperature cracking causes nitrogen isotope fractionation. 14N is enriched in crude oils and nitrogen isotopes are lighter in high-maturity oils.

     

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