Institute of Petroleum Engineering

Centre for Gas Hydrate Research Publications

Abstract 004

A Rigorous Method for the Prediction of Gas Hydrate Inhibition by Methanol in Multi-Component Systems

Avlonitis, D. A., Todd, A. C., and Danesh, A.
International Offshore and Polar Engineering Conference, Edinburgh (1991).
The effect of water and methanol on the phase equilibria of hydrocarbon and other reservoir fluids is rigorously calculated by a cubic equation of state, with parameters obtained from binary data. For hydrate equilibria predictions the model is coupled with the ideal solid solution theory. The predictions of the model are compared with a wide variety of experimental hydrate inhibition data and consistently good agreement is demonstrated. Satisfactory predictions are also obtained for the distribution of methanol among equilibrium phases.

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