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LIU Wen-hui, SONG Yan, LIU Quan-you, QIN Sheng-fei, WANG Xiao-feng. Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals[J]. Acta Sedimentologica Sinica, 2003, 21(1): 183-190.
Citation: LIU Wen-hui, SONG Yan, LIU Quan-you, QIN Sheng-fei, WANG Xiao-feng. Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals[J]. Acta Sedimentologica Sinica, 2003, 21(1): 183-190.

Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals

  • Received Date: 2002-12-26
  • Rev Recd Date: 2003-01-10
  • Publish Date: 2003-03-10
  • Simulation experiment is an important part in the study on organic geochemistry. It is also an important means for the research of oil and gas geochemistry. According to the analysis of component and isotope composition of pyrolytic gases generated from simulation of coal and its main macerals, we replenish and perfect the predecessor's cognition of isotopic composition in pyrolytic gases generated from simulation in this paper. Moreover, we contrastively study the fractional characteristics of carbon isotope in coal-type gases and pyrolytic gases, and the result shows that they have favourable consistency. Basing on careful simulation, we can gain the decisive index of coal-type gases generated from different coal-bearing sedimentary basin. To the contrast of carbon isotopic composition between natural gases and simulation gases, what the most important is how to deal with the isotopic analysis data. According to the carbon isotope analysis of the simulation series products, we obtain the relationship between methane, ethane carbon isotopic composition and evolution stage in natural gas with single source, and the relationship between methane carbon isotope and ethane carbon isotope in evolution process. All of these results have an important significance to judgie gases of mixed sources.
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  • Received:  2002-12-26
  • Revised:  2003-01-10
  • Published:  2003-03-10

Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals

Abstract: Simulation experiment is an important part in the study on organic geochemistry. It is also an important means for the research of oil and gas geochemistry. According to the analysis of component and isotope composition of pyrolytic gases generated from simulation of coal and its main macerals, we replenish and perfect the predecessor's cognition of isotopic composition in pyrolytic gases generated from simulation in this paper. Moreover, we contrastively study the fractional characteristics of carbon isotope in coal-type gases and pyrolytic gases, and the result shows that they have favourable consistency. Basing on careful simulation, we can gain the decisive index of coal-type gases generated from different coal-bearing sedimentary basin. To the contrast of carbon isotopic composition between natural gases and simulation gases, what the most important is how to deal with the isotopic analysis data. According to the carbon isotope analysis of the simulation series products, we obtain the relationship between methane, ethane carbon isotopic composition and evolution stage in natural gas with single source, and the relationship between methane carbon isotope and ethane carbon isotope in evolution process. All of these results have an important significance to judgie gases of mixed sources.

LIU Wen-hui, SONG Yan, LIU Quan-you, QIN Sheng-fei, WANG Xiao-feng. Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals[J]. Acta Sedimentologica Sinica, 2003, 21(1): 183-190.
Citation: LIU Wen-hui, SONG Yan, LIU Quan-you, QIN Sheng-fei, WANG Xiao-feng. Evolution of Carbon Isotopic Composition in Pyrolytic Gases Generated from Coal and Its Main Macerals[J]. Acta Sedimentologica Sinica, 2003, 21(1): 183-190.
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