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《Marine Geology Frontiers》 2011-05
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RESEARCH ON INFLUENCING FACTORS OF GAS HYDRATE PHASE EQUILIBRIUM IN MARINE SEDIMENTS

LIU Wei1,2,JIN Xianglong1,2,CHU Fengyou2,FANG Yinxia2,LI Qi1(1 School of Marine Geosciences,China University of Geosciences,Beijing 100083,China;2 Key Laboratory of Submarine Geosciences,China Second Institute of Oceanography,SOA,Hangzhou 310012,China)  
There is a large number of natural gas hydrate(NGH) resources occurred in marine sediments.The study of phase equilibrium of gas hydrate and its influencing factors is of significance to the thermodynamics and kinetics,distribution pattern and resource assessment of gas hydrate.However,the research results up to the present remain qualitative or semi-quantitative,and not much attention has been paid to the influence degree and genetic mechanisms of different factors.Recent researches suggest that there are some other ingredients which may influence the phase equilibrium of NGH in addition to temperature and pressure,such as gas composition,pore fluid salinity as well as sediment grain and pore size.In this paper,preliminary discussion was given to these factors from the view point of gas solubility,water chemistry and sediment porosity.
【Fund】: 国家海洋局第二海洋研究所基本科研业务专项(JG1002)
【CateGory Index】: P744.4
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