天然气水合物分解引起多孔介质变形流固耦合研究
Numerical Study on Porous Media′s Deformation Due to Natural Gas Hydrate Dissociation Considering Fluid-Solid Coupling
查看参考文献17篇
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文摘
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水合物地层变形是天然气水合物开采安全性评价的关键参数。提出了考虑传热、水合物分解相变、多相渗流和地层变形4个物理效应的一维多孔介质中水合物降压分解数学模型,在验证该模型适用性之后进行了粉细砂多孔介质变形敏感性分析。基于基本假设可以得到以下结论:出口压强是影响多孔介质变形的主要因素,出口压强越小,多孔介质最终变形越大,且完成变形所需时间越长。环境温度和多孔介质绝对渗透率对多孔介质最终变形没有影响,但会改变多孔介质完成变形所需时间的长度。 |
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其他语种文摘
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A one-dimensional model for analyzing the porous media′s deformation during and after dissociation of natural gas hydrate (NGH) was developed in which conductive-convective heat transfer,two-phase fluid flow,intrinsic kinetics of NGH dissociation and deformation of solid skeleton were all included.After the certification of the numerical model,a parameter sensitivity analysis was developed.Based on the analysis,main conclusions are as follows: the deformation rate and the final deformation both decrease with the increase of the outlet pressure;the increase of the absolute permeability or the environmental temperature leads to the increase of the deformation rate,but makes no difference to the final deformation. |
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来源
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天然气地球科学
,2013,24(5):1079-1085 【核心库】
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关键词
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天然气水合物
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多孔介质变形
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流固耦合
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数值模拟
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地址
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中国科学院力学研究所,土力学实验室, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-1926 |
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学科
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石油、天然气工业 |
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基金
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国家自然科学基金
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国家自然科学基金
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文献收藏号
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CSCD:4972272
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