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Improvements in clathrate modelling II: the H2O-CO2-CH4-N2-C2H6 fluid system
Bakker, R.J. (1998). Improvements in clathrate modelling II: the H2O-CO2-CH4-N2-C2H6 fluid system, in: Henriet, J.-P. et al. Gas hydrates: relevance to world margin stability and climate change. Geological Society Special Publication, 137: pp. 75-105. https://dx.doi.org/10.1144/GSL.SP.1998.137.01.06
In: Henriet, J.-P.; Mienert, J. (1998). Gas hydrates: Relevance to world margin stability and climate change. Geological Society Special Publication, 137. The Geological Society: London. ISBN 1-86239-010-X. 338 pp., more
In: Hartley, A.J. et al. (Ed.) Geological Society Special Publication. Geological Society of London: Oxford; London; Edinburgh; Boston, Mass.; Carlton, Vic.. ISSN 0305-8719; e-ISSN 2041-4927, more
Keywords
    Chemical compounds > Organic compounds > Hydrocarbons > Gas hydrates
    Data > Experimental data
    Marine/Coastal
Author  Top 
  • Bakker, R.J.
Abstract
    Clathrate stability conditions have been modelled for the H2O-CO2-CH4-N2-C2H6 fluid system based on all available experimental data. Optimum Kihara parameters are estimated for pure CO2, CH4, N2 and C2H6 gas hydrates from using the most accurate calculation of other parameters involved in clathrate modelling, like fugacities, gas solubilities in H2O and thermodynamic constants. For mixed gas hydrates of CO2-CH4, CH4-N2, and CH4-C2H6 excess Gibbs free energy functions are introduced to obtain a good fit to experimental data. The excess Gibbs free energy is described according a modified Margules equation, which depends on mole fraction and temperature.
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