Prediction of the conditions for sour gas hydrate formation in the presence of methanol inhibitor |
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Authors: | Bahman ZareNezhad Mohammad Ziaee |
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Affiliation: | Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran |
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Abstract: | In this work a new thermodynamic model for accurate prediction of H2S and CO2 containing sour gas hydrate equilibrium dissociation temperatures in the presence of a gas hydrate thermodynamic inhibitor (methanol) is presented. The average absolute deviation between the predicted and measured sour gas hydrates dissociation temperatures (AADT%) considering pure and mixed acid gases in the presence of methanol inhibitor is about 0.274% which is much lower than those obtained by the other available thermodynamic models. The proposed approach is quite reliable over wide ranges of methanol and acid gases concentrations and can be used for performance evaluation of other gas hydrate inhibitors regarding the design of sour natural gas flow assurance systems in oil and gas industries. |
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Keywords: | gas hydrate acid gas natural gas inhibitor flow assurance |
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