Evolution and analysis of gas sorption-induced coal fracture strain data
文献类型：期刊论文
| 作者 | Liu, Zhanghao6,7,8; Liu, Jishan5; Pan, Pengzhi8; Elsworth, Derek3,4; Wei, Mingyao2; Shi, Rui1 |
| 刊名 | PETROLEUM SCIENCE
 |
| 出版日期 | 2020-01-16 |
| 页码 | 17 |
| 关键词 | Coal seam gas Fracture strain Experimental data Equilibrium state Non-equilibrium state |
| ISSN号 | 1672-5107 |
| DOI | 10.1007/s12182-019-00422-z |
| 英文摘要 | Although coal swelling/shrinking during coal seam gas extraction has been studied for decades, its impacts on the evolution of permeability are still not well understood. This has long been recognized, but no satisfactory solutions have been found. In previous studies, it is normally assumed that the matrix swelling/shrinking strain can be split between the fracture and the bulk coal and that the splitting coefficient remains unchanged during gas sorption. In this study, we defined the fracture strain as a function of permeability change ratio and back-calculated the fracture strains at different states. In the equilibrium state, the gas pressure is steady within the coal; in the non-equilibrium state, the gas pressure changes with time. For equilibrium states, the back-calculated fracture strains are extremely large and may be physically impossible in some case. For non-equilibrium states, two experiments were conducted: one for a natural coal sample and the other for a reconstructed one. For the fractured coal, the evolution of permeability is primarily controlled by the transition of coal fracture strain or permeability from local matrix swelling effect to global effect. For the reconstituted coal, the evolution of pore strain or permeability is primarily controlled by the global effect. |
| 资助项目 | State Key Research Development Program of China[2017YFC0804203] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-DQC029] ; Australian Research Council[DP200101293] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000508085200001 |
| 出版者 | SPRINGEROPEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23336]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Jishan |
| 作者单位 | 1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China 2.China Univ Min & Technol, IoT Percept Mine Res Ctr, Xuzhou 221116, Jiangsu, Peoples R China 3.Penn State Univ, Energy Inst, University Pk, PA 16802 USA 4.Penn State Univ, G3 Ctr, Dept Energy & Mineral Engn, University Pk, PA 16802 USA 5.Univ Western Australia, Sch Mech & Chem Engn, 35 Stirling Highway, Crawley, WA 6009, Australia 6.China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhanghao,Liu, Jishan,Pan, Pengzhi,et al. Evolution and analysis of gas sorption-induced coal fracture strain data[J]. PETROLEUM SCIENCE,2020:17. |
| APA | Liu, Zhanghao,Liu, Jishan,Pan, Pengzhi,Elsworth, Derek,Wei, Mingyao,&Shi, Rui.(2020).Evolution and analysis of gas sorption-induced coal fracture strain data.PETROLEUM SCIENCE,17. |
| MLA | Liu, Zhanghao,et al."Evolution and analysis of gas sorption-induced coal fracture strain data".PETROLEUM SCIENCE (2020):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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