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祁连山冻土区天然气水合物储层岩石热物性实验研究
Authors
万丽华
关进安
李栋梁
梁徳青
Publication date
1 January 2018
Publisher
Abstract
采用扫描电镜测试了祁连山冻土区天然气水合物储层泥岩和砂岩微观结构.在显微镜下观察到,泥岩由微小均匀的片状多边形块体构成,这种微观结构使得泥岩中水合物以浸染状赋存;而砂岩内部存在分散状孔隙,砂岩中水合物为孔隙赋存.采用瞬变平面热源法测试了含甲烷水合物储层岩石的导热系数和热扩散率.在温度为- 9.41 ~ 9.41 ℃时,干泥岩导热系数为0.577 ~ 0.853 W·m~(- 1)·K~(- 1),含甲烷水合物储层泥岩导热系数为0.704 ~ 1.050 W·m~(- 1)·K~(- 1).在温度为- 8.11 ~ 9.28 ℃时,干砂岩导热系数为0.828 ~ 1.271 W·m~(- 1)·K~(- 1),含甲烷水合物储层砂岩导热系数为3.850 ~ 4.555 W·m~(- 1)·K~(- 1).在温度为- 9.41 ~ 9.41 ℃时,干泥岩热扩散率为0.712 ~ 0.894 mm~2·s~(- 1),含甲烷水合物储层泥岩热扩散率为0.792 ~ 1.006 mm~2·s~(- 1),干砂岩热扩散率为1.198 ~ 1.674 mm~2·s~(- 1),含甲烷水合物储层砂岩热扩散率为1.403 ~ 1.769 mm~2·s~(- 1).测试数据表明,对于孔隙型水合物,测定导热系数是一种较好的辨识水合物存在的辅助手段
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/31140
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
Download from data provider
oai:ir.giec.ac.cn:344007/21899
Last time updated on 17/12/2019
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/21897
Last time updated on 17/12/2019