收稿日期: 2012-07-11
修回日期: 2012-09-08
网络出版日期: 2013-04-10
基金资助
国家自然科学基金项目（编号：21166006）资助.
Kinetic Research on Replacement of Methane in Gas Hydrate with Carbon Dioxide Emulsion
Received date: 2012-07-11
Revised date: 2012-09-08
Online published: 2013-04-10
周锡堂，樊栓狮，梁德青 . CO2乳状液置换天然气水合物中CH4的动力学研究[J]. 天然气地球科学, 2013 , 24(2) : 259 -264 . DOI: 10.11764/j.issn.1672-1926.2013.02.259
Replacing methane in gas hydrate with carbon dioxide is a method to exploit natural gas hydrate that combines greenhouse gas sequestration and clean energy source,the key of which is the improvement of replacement rate and enhancement of the kinetics.In this research,carbon dioxide emulsions with different gravity ratio of CO2 and CH4 were injected into natural gas hydrate.It was shown,after replacement of 24-96 hours,the best result would be obtained when reacting under the condition of CO2 ′ SHZ and beside CH4 ′SHZ,with emulsion′s gravity ratio 90∶10,and the replacing result of CO2 emulsion would be better than that of liquid CO2 .
Key words： CO2 emulsion; Replacement; Natural gas hydrate; Kinetic
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