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热力法开采天然气水合物的数学模拟
Authors
冯自平
唐良广
李刚
樊栓狮
Publication date
1 January 2006
Publisher
Abstract
将天然气水合物在热力作用下的分解过程看作一个移动界面问题,即热力开采过程中整个水合物藏可分为分解区和水合物区。通过适当简化,建立了分解区和水合物区的传热模型,并严格推导了模型的解析解。使用模型分别模拟注入蒸气和热水条件下开采天然气水合物的两个实例,得到分解区和水合物区温度场随时间变化的规律。在此基础上,分析了水合物热力开采过程中热量的有效利用率,即用于水合物分解的热量与输入的总热量的比值。模型计算结果表明,在相同条件下,注入热水比注入蒸气将能获得更高的热量有效利用率。在给定的条件下,注入蒸气和热水开采过程的热量的有效利用率分别为0.349和0.465。另一个方面,该比值与水合物地层的物性参数(如水合物的饱和度、分解区域的热传导系数等)有很大的关系,地层水合物饱和度越高,分解区的热传导桑教娥小.刚执营的有特利用率撼高
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/308
Last time updated on 29/11/2016
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/31590
Last time updated on 04/12/2021
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
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oai:ir.giec.ac.cn:344007/16880
Last time updated on 05/12/2019