Experimental Study of Gas Adsorption-induced Coal Swelling and its Influence on Permeability
文献类型：期刊论文
| 作者 | Fang Zhiming; Li Xiaochun |
| 刊名 | DISASTER ADVANCES
 |
| 出版日期 | 2012 |
| 卷号 | 5期号:4页码:769-773 |
| ISSN号 | 0974-262X |
| 关键词 | Coal Gas adsorption Swelling Permeability ECBM |
| 英文摘要 | Coal permeability is a key parameter to control gas flow in coalbed. Adsorption of gas on coal will induce coal matrix swelling and desorption of gas may induce coal matrix shrinkage. Under reservoir conditions these strain changes affect the cleat porosity and thus permeability. Therefore it is significant to investigate coal swelling caused by different gases (CO2, N-2, CH4, etc.), adsorption on coal and its influence on coal permeability, for the purpose of studying on the technologies of coalbed methane (CBM) exploitation and CO2 sequestration in coalbed and enhanced coalbed methane (ECBM) recovery. In order to study the changes of coal swelling and permeability caused by different gases adsorption the experiments for simultaneously measuring the adsorption adsorption-induced swelling strain and permeability of coal had been carried out using CO2, N-2, CH4, respectively, by use of a new method and device for simultaneously measuring adsorption-strain-permeability. The experimental results show that while maintaining a constant effective stress (3MPa in this work), coal swellings caused by three gases adsorption increased with increasing gas pressures and the relationship of swellings caused by different gases is: epsilon(CO2) > epsilon(CH4) > epsilon(N2); coal permeabilities of three gases all decreased with increasing coal swellings, the permeability decrease of CO2 was the most obvious which nearly an order of magnitude, followed by CH4, the permeability decrease of N-2 was very small. These results then are used to explain the mechanism of why CO2 causes coal permeability reduction but N-2 enhances coal permeability in the process of ECBM operation. |
| WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 语种 | 英语 |
| 出版者 | DISASTER ADVANCES |
| WOS记录号 | WOS:000313100100125 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3377]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Fang Zhiming,Li Xiaochun. Experimental Study of Gas Adsorption-induced Coal Swelling and its Influence on Permeability[J]. DISASTER ADVANCES,2012,5(4):769-773. |
| APA | Fang Zhiming,&Li Xiaochun.(2012).Experimental Study of Gas Adsorption-induced Coal Swelling and its Influence on Permeability.DISASTER ADVANCES,5(4),769-773. |
| MLA | Fang Zhiming,et al."Experimental Study of Gas Adsorption-induced Coal Swelling and its Influence on Permeability".DISASTER ADVANCES 5.4(2012):769-773. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。