| 天然气水合物的形成条件及成因分析 |
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| 引用本文： | 蒋向明.天然气水合物的形成条件及成因分析[J].中国煤炭地质,2009(12):7-11. |
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| 作者姓名： | 蒋向明 |
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| 作者单位： | 中国煤炭地质总局水文地质局,河北邯郸056004 |
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| 摘 要： | 从天然气水合物的晶体结构模型出发，说明了其组成成分及结构特征。通过对温度一压力平衡条件的差异性分析，揭示了天然气水合物形成的基本条件，对其赋存类型及成因进行了分类，对我国及全球天然气水合物分布情况进行了说明，并以青海木里煤田为例，对天然气水合物的形成条件和成因进行了详细的论述，认为：变质作用及煤化作用使煤田内丰富的煤炭资源不断产生煤层气，当煤层气沿断层破碎带及裂隙运移至含水岩层或含水裂隙时，在温度和压力的作用下遇水形成天然气水合物。强调在开发利用天然气水合物时，必须考虑水资源的保护和综合利用。
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| 关 键 词： | 天然气水合物 分布特征 形成条件 存在类型 成因分析 木里煤田 |
Forming Conditions and Genetic Analysis of Natural Gas Hydrate |
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| Jiang Xiangming.Forming Conditions and Genetic Analysis of Natural Gas Hydrate[J].Coal Geology of China,2009(12):7-11. |
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| Authors: | Jiang Xiangming |
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| Institution: | Jiang Xiangming (Hydrogeologieal Exploration Bureau, CNACG, Handan, Hebei 056004) |
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| Abstract: | Start from crystal structure model of the natural gas hydrate, illustrated its composition and structural features. Through temperature-pressure equilibrium condition discrepancy analysis, revealed basic terms of natural gas hydrate formation and classified its hosting pattern and genesis. The paper illustrated national and global distribution of natural gas hydrate, to take the Muri coalfield in the Qinghai Province as an example, discussed its forming condition and cause of formation in detail. Considered that the metamorphism and coalification make the abundant coal resource producing coal bed gas constantly, when the gas migrating along the shattered fault zones and fractures into water-filled strata or fractures, natural gas hydrate will be formed under the temperature and pressure. It is emphasized that, during the exploitation and utilization of natural gas hydrate, the protection and comprehensive utilization of water resource have to take into account. |
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| Keywords: | natural gas hydrate distribution feature formation condition hosting pattern genetic analysis Muri coalfield |
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