Institute of Petroleum Engineering

Centre for Gas Hydrate Research Publications

Abstract 119
Estimating the Hydrate Inhibtion Effect of Single and Mixed Thermodynamic Inhibitors Using a New Predictive Technique
Mohammadi, A.H., and Tohidi, B.
The 5th International Conference on Gas Hydrates, Trondheim, Norway, June 13-16 (2005).
A new correlation has been developed for predicting hydrate inhibition characteristics of aqueous solutions of salts and/or organic inhibitors. This predictive method estimates the suppression of the hydrate dissociation temperature due to the presence of methanol, ethanol, ethylene glycol, diethylene glycol, triethylene glycol, glycerol, NaCl, KCl, CaCl2, KBr, NaBr, HCOONa, HCOOK, HCOOCs, K2CO3 and mixed thermodynamic inhibitors. The correlation has been developed using hydrate inhibition data at different concentrations of salt and/or organic inhibitor generated using a previously reported thermodynamic model. Independent data have been used in examining the reliability of this method. The predictions of this correlation are in good agreement with the independent experimental data, demonstrating the reliability of this predictive technique for estimating the hydrate inhibition effects of salts and/or organic inhibitors.

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