Quantitative study on coal permeability evolution with consideration of shear dilation
文献类型：会议论文
| 作者 | Zhang, Shouwen2; Wei, Mingyao1,2; Liu, Jishan2; Feng, Xiating2 ; Wang, Chunguang3; Fang, Kai3; Zhou, Fubao1; Xia, Tongqiang1,2
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| 出版日期 | 2016 |
| 会议日期 | SEP 06-08, 2015 |
| 会议地点 | Wuhan, PEOPLES R CHINA |
| 关键词 | Coal permeability Gas sorption Coal swelling Shear dilation Effective stress |
| 卷号 | 36 |
| DOI | 10.1016/j.jngse.2016.05.007 |
| 页码 | 1199-1207 |
| 英文摘要 | Although coal permeability has been largely investigated, its changes caused by shear dilation of fractures are rarely reported possibly because it's often underestimated by many models. This work develops a new model of coal permeability with consideration of fracture deformation under influences of both normal and shear stresses. It is coupled with the existing models of coal deformation in the matrix system as well as gas flow and transport in the fracture system. Lastly, the fully coupled mode is applied to calculate the evolution of coal permeability during coalbed gas production. The results show that coal permeability increases with the decreasing reservoir pressure, while the fracture permeability decreases nonlinearly with the increasing normal stress and increases with the increasing shear dilation, all of which are well consistent with field data. The application of this model in a case study also indicates that the fully coupled model with consideration of shear dilation is superior to previous models. (C) 2016 Elsevier B.V. All rights reserved. |
| 源文献作者 | Int Soc Rock Mech, Chinese Acad Sci, Inst Rock Soil Mech, Natl State Key Lab Geomechan & Geotechnical Engn |
| 会议录 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
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| 会议录出版者 | ELSEVIER SCI LTD |
| 会议录出版地 | OXFORD |
| 语种 | 英语 |
| WOS研究方向 | Energy & Fuels ; Engineering |
| WOS记录号 | WOS:000390830300009 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4912]  |
| 专题 | 岩土力学所知识全产出_会议论文 岩土力学所知识全产出 国家重点实验室知识产出_会议论文 |
| 作者单位 | 1.China Univ Min & Technol, State Key Lab Coal Resources & Safe Min ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Shandong Univ Sci & Technol, Dept Engn Mech |
| 推荐引用方式 GB/T 7714 | Zhang, Shouwen,Wei, Mingyao,Liu, Jishan,et al. Quantitative study on coal permeability evolution with consideration of shear dilation[C]. 见:. Wuhan, PEOPLES R CHINA. SEP 06-08, 2015. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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