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天然气水合物分解引起多孔介质变形流固耦合研究
Alternative TitleNumerical Study on Porous Media′s Deformation Due to Natural Gas Hydrate Dissociation Considering Fluid-Solid Coupling
刘乐乐; 鲁晓兵; 张旭辉
Source Publication天然气地球科学
2013-10
Volume24Issue:5Pages:1079-1085
ISSN1672-1926
Abstract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。
Other AbstractA 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.
Keyword天然气水合物 多孔介质变形 流固耦合 数值模拟
Subject Area流固耦合作用
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Indexed ByCSCD
Language中文
Funding Organization国家自然科学基金项目"水合物热分解引起地层分层破坏实验室研究"(编号:11102209); 国家自然科学基金项目"冻土区天然气水合物注热开采方法研究"(编号:11272314)联合资助
CSCD IDCSCD:4972272
DepartmentLMFS海洋土力学(LHO)
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48061
Collection流固耦合系统力学重点实验室
Corresponding Author刘乐乐
Recommended Citation
GB/T 7714
刘乐乐,鲁晓兵,张旭辉. 天然气水合物分解引起多孔介质变形流固耦合研究[J]. 天然气地球科学,2013,24(5):1079-1085.
APA 刘乐乐,鲁晓兵,&张旭辉.(2013).天然气水合物分解引起多孔介质变形流固耦合研究.天然气地球科学,24(5),1079-1085.
MLA 刘乐乐,et al."天然气水合物分解引起多孔介质变形流固耦合研究".天然气地球科学 24.5(2013):1079-1085.
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