| 天然气水合物形成条件与含量影响因素的半定量分析 |
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| 引用本文： | 卢振权,SULTAN Nabil,金春爽,王明君,祝有海,吴必豪.天然气水合物形成条件与含量影响因素的半定量分析[J].地球物理学报,2008,51(1):125-132. |
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| 作者姓名： | 卢振权 SULTAN Nabil 金春爽 王明君 祝有海 吴必豪 |
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| 作者单位： | 1.中国地质科学院矿产资源研究所,北京 100037;2.Département de Géosciences Marines, IFREMER, Centre de Brest, 29280 Plouzané, France;3.国土资源部油气资源战略研究中心，北京 100034 |
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| 基金项目： | 中央公益性科研院所基本科研业务费专项基金，中国地质调查局地质调查项目，中国地质科学院矿产资源研究所预调查项目 |
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| 摘 要： | 天然气水合物形成条件及其含量的研究是天然气水合物调查研究中最为关心的两个问题.从天然气水合物形成过程的热动力学理论模型出发，半定量地探讨了不同因素（温度、压力、气体组成、孔隙水盐度、沉积物孔隙大小等）对天然气水合物形成作用及含量的影响程度.结果显示，气体组成特别是丙烷的加入对天然气水合物形成的温度和压力条件影响最大，孔隙水盐度也会对天然气水合物形成的温度和压力条件产生重要影响，沉积物孔隙在一定范围内（1×10-6m～4×10-8m）对天然气水合物形成的温度和压力条件影响有限.天然气水合物含量受孔隙大小和盐度影响较小，主要只与气体的供应大小有关.
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| 关 键 词： | 天然气水合物 形成条件 含量 影响因素 半定量分析 |
| 文章编号： | 0001-5733（2008）01-0125-08 |
| 收稿时间： | 2007-03-02 |
| 修稿时间： | 2007-10-11 |
Semi-quantitative analysis of factors affecting gas hydrate formation conditions and its fractions |
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| LU Zhen-Quan,SULTAN Nabil,JIN Chun-Shuang,WANG Ming-Jun,ZHU You-Hai,WU Bi-Hao.Semi-quantitative analysis of factors affecting gas hydrate formation conditions and its fractions[J].Chinese Journal of Geophysics,2008,51(1):125-132. |
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| Authors: | LU Zhen-Quan SULTAN Nabil JIN Chun-Shuang WANG Ming-Jun ZHU You-Hai WU Bi-Hao |
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| Institution: | 1.Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijin;g 100037, China;2.Département de Géosciences Marines, IFREMER, Centre de Brest, 29280 Plouzané, France;3.Strategic Research Center for Oil and Gas Resources, Ministry of Land and Resources, Beijing 100034, China |
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| Abstract: | Gas hydrate formation conditions and its fraction out of pore space are two important issues. Based on theoretical gas hydrate thermo dynamic model, semi-quantitative analyses on various intrinsic factors (such as temperature, pressure, gas composition, pore-water salinity, sediment pore size) affecting gas hydrate formation conditions and its fraction out of pore space are conducted. The analytical results indicate that gas composition (e.g., the mixture of methane and propane) plays a significant role in affecting gas hydrate formation conditions of temperature and pressure; pore-water salinity also greatly affects gas hydrate formation conditions; sediment pore size within a small range (1×10－6～4×10-8m) have a small effect on gas hydrate formation conditions. Gas hydrate fraction out of pore space is little affected by pore size and pore water salinity, but is strongly dependent on gas supply. |
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| Keywords: | Gas hydrate Formation conditions Fraction out of pore space Intrinsic factors Semi-quantitativeanalysis |
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