EXPERIMENT INVESTIGATION ON THE CARBON ISOTOPE AND COMPOSITIONFRACTIONATION OF METHANE DURING GAS MIGRATION BY DIFFUSION
Received date: 2003-09-22
Revised date: 2003-09-26
Online published: 2003-12-20
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.
Key words： Natural gas; Carbon isotope; Diffusion; Fractionation; Simulation.
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
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