关键词: 水合物, 生成机理, 热力学, 模型, 电解质

Abstract: A new initiation mechanism is proposed for gas hydrate formation from liquid water. Based on this mechanism, a new thermodynamic hydrate model has been developed and extended to the electrolyte-containing system by incorporating with modified Patel-Teja equation. A number of test results indicate that the new model is superior to the traditional van der Waals-Platteeuw typed ones and adequater for prediction of the hydrate formation conditions for natural gas, gas condensate or crude oil. It has been also shown that the new model is applicable to the system containing brine inhibitor.

Key words: gas hydrate, formation mechanism, thermodynamic, model, eletrolyte