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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:能源与动力学院
学科:能源与环境工程
办公地点:能动大楼810
联系方式:songyc@dlut.edu.cn
电子邮箱:songyc@dlut.edu.cn
Analysis of the effect of particle size on permeability in hydrate-bearing porous media using pore network models combined with CT
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论文类型:期刊论文
发表时间:2016-01-01
发表刊物:FUEL
收录刊物:SCIE、EI
卷号:163
页面范围:34-40
ISSN号:0016-2361
关键字:Natural gas hydrate; Particle size; Porosity; Permeability; Pore network model; X-ray computed tomography
摘要:Because of the clean burning and minimal pollution generation of natural gas hydrates, they are viewed as premium fuel energy. The gas and water flow is highly dependent on the seepage properties of the hydrate sediments; therefore, the permeability is a key parameter for estimating the gas production of hydrate reservoirs. Pore network models combined with X-ray computed tomography (CT) were proposed to analyze the index properties and percolation characteristics of porous media containing hydrates in our previous study. This study extends our previous investigation into the influences of particle size and porosity on permeability. The results suggest the porosities of hydrate-bearing porous media formed by different-size particles, as calculated by both the pore network models and the volumetric method, are in agreement. Moreover, the hydrate-bearing porous media formed by larger-size particles has larger porosity, smaller capillary pressure, and larger absolute permeability. In addition, under the same degree of water saturation, larger porosity induced a larger water-phase relative permeability, but a smaller gas-phase relative permeability. (C) 2015 Elsevier Ltd. All rights reserved.