Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions

›› 2010, Vol. 18 ›› Issue (2): 292-296.

• THERMODYNAMICS AND CHEMICAL ENGINEERING DATA • Previous Articles Next Articles

Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions

YANG Mingjun¹, SONG Yongchen¹, LIU Yu¹, CHEN Yongjun¹, LI Qingping²

1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian Univer-sity of Technology, Dalian 116024, China;
2. China National Offshore Oil Corporation Research Center, Beijing 100027, China

Received:2009-03-26 Revised:2009-08-23 Online:2010-04-28 Published:2010-04-28
Supported by:
Supported by the Key Program of National Natural Science Foundation of China(50736001);the National High Technology Research and Development Program of China(2006AA09A209-5);the Major State Basic Research Development Program of China(2009CB219507)

Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions

杨明军¹, 宋永臣¹, 刘瑜¹, 陈拥军¹, 李清平²

1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian Univer-sity of Technology, Dalian 116024, China;
2. China National Offshore Oil Corporation Research Center, Beijing 100027, China

通讯作者: SONG Yongchen,E-mail:powere@dlut.edu.cn
基金资助:
Supported by the Key Program of National Natural Science Foundation of China(50736001);the National High Technology Research and Development Program of China(2006AA09A209-5);the Major State Basic Research Development Program of China(2009CB219507)

Abstract

Abstract: An experimental device was set up to study the hydrate formation conditions.Effects of pore size,salinity,and gas composition on the formation and dissociation of hydrates were investigated.The result indicates that the induction time for the formation of hydrates in porous media is shorter than that in pure water.The decrease in pore size,by decreasing the size of glass beads,increases the equilibrium pressure when the salinity and temperature are kept constant.In addition,higher salinity causes higher equilibrium pressure when the pore size and temperature are kept constant.It is found that the effects of pore size and salinity on the hydrate equilibrium are quite different.At lower methane concentration,the hydrate equilibrium is achieved at lower pressure and higher temperature.

Key words: hydrate, equilibrium, pore size, salinity, gas composition

摘要： An experimental device was set up to study the hydrate formation conditions.Effects of pore size,salinity,and gas composition on the formation and dissociation of hydrates were investigated.The result indicates that the induction time for the formation of hydrates in porous media is shorter than that in pure water.The decrease in pore size,by decreasing the size of glass beads,increases the equilibrium pressure when the salinity and temperature are kept constant.In addition,higher salinity causes higher equilibrium pressure when the pore size and temperature are kept constant.It is found that the effects of pore size and salinity on the hydrate equilibrium are quite different.At lower methane concentration,the hydrate equilibrium is achieved at lower pressure and higher temperature.

关键词: hydrate, equilibrium, pore size, salinity, gas composition

YANG Mingjun, SONG Yongchen, LIU Yu, CHEN Yongjun, LI Qingping. Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions[J]. , 2010, 18(2): 292-296.

杨明军, 宋永臣, 刘瑜, 陈拥军, 李清平. Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions[J]. , 2010, 18(2): 292-296.

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Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions

Influence of Pore Size,Salinity and Gas Composition upon the Hydrate Formation Conditions

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