EXPERIMENT INVESTIGATION ON THE CARBON ISOTOPE AND COMPOSITIONFRACTIONATION OF METHANE DURING GAS MIGRATION BY DIFFUSION

Expand
  • 1. Langfang Branch of Research Institute of Petroleum Exploration and Development, Petrochina, Langfang 065007, China;
    2. China University of Mining and Technology (Beijing), Beijing 100083, China

Received date: 2003-09-22

  Revised date: 2003-09-26

  Online published: 2003-12-20

Abstract

Based on the equipment designed and developed by ourself, the experiment has been conducted to investigate on the carbon isotope fractionation of methane during gas migration by diffusion through sedimentary rocks with different chacracteristics. The study indicated, the lower the porosity and the permeability,the higher the fractionation. As for C-{2++}, no measurable fractionation was observed while the composition fractionation somewhat exsited. It is very significant not only for investigation on the path of gas migration but also for research of gas-correlation.

Cite this article

LI Jian,LIU Zhao-lu,LI Zhi-sheng, HU Guo-yi, YAN Qi-tuan,SHAN Xiu-qing, MA Che . EXPERIMENT INVESTIGATION ON THE CARBON ISOTOPE AND COMPOSITIONFRACTIONATION OF METHANE DURING GAS MIGRATION BY DIFFUSION[J]. Natural Gas Geoscience, 2003 , 14(6) : 463 -468 . DOI: 10.11764/j.issn.1672-1926.2003.06.463

References

[1] 李剑,罗霞,李志生,等. 对甲苯碳同位素值作为气源对比新指标的新认识[J].天然气地球科学,2003,14(3):177-180.
[2] Schoell. Genetic characterization of natural gases[J].AAPG Bulletin,1980,64:2225-2238.
[3] Stahl. Carbon characterization of natural gases[J]. Chem. Geology,1975,20:121-149
[4] Faber. Geochemical surface exploration for hydrocarbons in north sea[J]. AAPG Bulletin,1979,63(3):363-386.
[5] Fuex. The use of stable carbon isotopes in hydrocarbon exploration[J]. Jour.Geochem Exploration, 1979, 7:55-188.
[6] Prinzhofer A, Hue A. Genetic and post-genetic molecular   and isotopic fractionation in natural gas[J]. Chem. Geol., 1995,126:281-290.
[7] Prinzhofer A, Pernaton E. Isotopically light methane in natural gas: Bacterial imprint or diffusive fractionation[J].Chem. Geol., 1997, 142:193-200.
[8] Galimov A13C isotope enrichment effect in methane carbon in the course of its filtration through rocks[J]. Geochem. Internet, 1967, (4):1180-1181.
[9] Lebedev, Syngayevskij. Carbon isotope fractionation in sorption process[J].Geochem. Internet, 1971,(8):460.
[10] Gunter Isotope fractionation during gas chromatographic seperation[J]. J. Chromat Sci., 1971,9:191-194.
[11] 陈安定.陕甘宁盆地中部气田奥陶系天然气的成因和运移[J]. 石油学报,1994,15(2):1-10.
[12]Zhang Tong wei. Experimental investigation on the carbon  isotope fractionation of methane during gas migration by diffusion through sedimentary rocks at elevated temperature and pressure[J]. Geochimica.Cosmichimica Acta,2001,65(16):2723-2742.

Outlines

/