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Effect of CO2 concentration on the performance of different thermodynamic models for prediction of CH4+CO2+H2O hydrate equilibrium conditions

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Abstract

Accurate prediction of phase equilibria regarding CH4 replacement in hydrate phase with high pressure CO2 is an important issue in modern reservoir engineering. In this work we investigate the possibility of establishing a thermodynamic framework for predicting the hydrate equilibrium conditions for evaluation of CO2 injection scenarios. Different combinations of equations of state and mixing rules are applied and the most accurate thermodynamic models at different CO2 concentration ranges are proposed.

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Authors and Affiliations

  1. School of Chemical, Petroleum and Gas Engineering, Semnan University, P. O. Box 35195-363, Semnan, Iran

    Bahman Zarenezhad, Mona Mottahedin & Ali Haghighi Asl

Authors
  1. Bahman Zarenezhad
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  2. Mona Mottahedin
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  3. Ali Haghighi Asl
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Correspondence to Bahman Zarenezhad.

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Zarenezhad, B., Mottahedin, M. & Asl, A.H. Effect of CO2 concentration on the performance of different thermodynamic models for prediction of CH4+CO2+H2O hydrate equilibrium conditions. Korean J. Chem. Eng. 28, 949–953 (2011). https://doi.org/10.1007/s11814-010-0422-1

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  • DOI: https://doi.org/10.1007/s11814-010-0422-1

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