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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2008  >  30(3): 297-301
Duan Chuanli, Chen Jianfa, Guo Jianjun, Shi Shengbao, Li Chengshan, Nie Guozhen. THE GEOCHEMICAL CHARACTERS OF CRUDE OILS AND SECONDARY GAS AFTER ANAEROBIC BIODEGRADATION IN LABORATORY[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2008, 30(3): 297-301. doi: 10.11781/sysydz200803297
Citation: Duan Chuanli, Chen Jianfa, Guo Jianjun, Shi Shengbao, Li Chengshan, Nie Guozhen. THE GEOCHEMICAL CHARACTERS OF CRUDE OILS AND SECONDARY GAS AFTER ANAEROBIC BIODEGRADATION IN LABORATORY[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2008, 30(3): 297-301. doi: 10.11781/sysydz200803297
shu

THE GEOCHEMICAL CHARACTERS OF CRUDE OILS AND SECONDARY GAS AFTER ANAEROBIC BIODEGRADATION IN LABORATORY

doi: 10.11781/sysydz200803297
  • 1.

    Department of Geochemistry, Yangtze University, Jingzhou, Hubei 434023

  • China

  • Received Date: 2007-05-23
  • Rev Recd Date: 2008-04-30
  • Publish Date: 2008-05-28
    Abstract
  • Two oils(one suffered obviously transformation,the other did not) from the Shengli oilfield were selected for anaerobic biodegradation in laboratory.The oils with microbiological degradation were regularly extracted and analyzed.It showed that the oil group composition was changed during anaerobic degradation,and CO2 was produced and part of them was reduced to CH4.The value of carbon isotope of the secondary CH4 was mainly distributed in about -43.4‰,δ13C of CO2 was mainly in -11.8‰.With the degraded time increasing,δ13C of CH4 was become lighter and δ13C of CO2 become heavier.

     

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