Indexed by:会议论文

Date of Publication:2012-06-17

Included Journals:EI、Scopus

Page Number:41-44

Abstract:Thermodynamic properties of hydrate are essential for gas hydrate investigation, especially the phase equilibrium behavior. Gas component can affect the phase equilibrium of hydrate. Through experiments of gas hydrate formation and dissociation in simulated sediments, phase equilibrium of gas hydrate composed of methane, ethane and propane has been studied. It's concluded that the methane hydrate equilibrium needs a lower pressure and a higher temperature with the presence of the ethane and propane. The equilibrium pressure of hydrate decreases with the decrease of methane concentration at the same temperature. The effect of propane concentration on hydrate equilibrium is not significant when the concentration reaches about 15%. The effects of porous medium on hydrate equilibrium have also been investigated. Copyright ? 2012 by the International Society of Offshore and Polar Engineers (ISOPE).