Micro-scale investigation on coupling of gas diffusion and mechanical deformation of shale
文献类型：期刊论文
| 作者 | Wei, Mingyao; Liu, Yingke; Liu, Jishan; Elsworth, Derek; Zhou, Fubao |
| 刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| 出版日期 | 2019 |
| 卷号 | 175期号:-页码:961-970 |
| 关键词 | Nanopores Micro-scale Explicit simulation approach Diffusion coefficient |
| ISSN号 | 0920-4105 |
| DOI | 10.1016/j.petrol.2019.01.039 |
| 英文摘要 | The nanopore structure usually exhibit complex geometry in the shale formation. The interactions between gas and pore structure in such heterogeneous property impacts the properties of shale gas transport in micro-scale. The precise description of this shale gas flow processes in detail is impossible if the micropore is not properly characterized. Thus, this study provides a simulation approach to model the complex geometry of nanopore structures in the shale formation. Based on SEM image segmentation of the shale matrix, the geometry of three compositions (nanopore, kerogen, and matrix) are explicitly simulated. Mass storage, transport mechanisms, and geomechanical properties are fully modeled in the micro-scale model. It demonstrates that the conventional dual porosity model fails to capture the storage and transport mechanisms in micro-scale by comparison with the micro-scale model. The simulation results reveal that stress-induced decrease of the diffusion coefficient is both time-dependent and space-dependent. The reduction of the diffusion coefficient can significantly cut down the adsorbed gas production in kerogen. It results in the low recovery rate of shale gas that a large proportion of adsorbed gas is unable to liberate. Moreover, the later stage of gas production is depended on the supply of adsorbed gas in kerogen. |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000458153000077 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15018]  |
| 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 | 1.China Univ Min & Technol, Minist Educ, Key Lab Gas & Fire Control Coal Mines, Xuzhou 221116, Jiangsu, Peoples R China 2.China Univ Min & Technol, IoT Percept Mine Res Ctr, Xuzhou 221116, Jiangsu, Peoples R China; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 4.China Univ Min & Technol, Fac Safety Engn, Xuzhou 221116, Jiangsu, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wei, Mingyao,Liu, Yingke,Liu, Jishan,et al. Micro-scale investigation on coupling of gas diffusion and mechanical deformation of shale[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2019,175(-):961-970. |
| APA | Wei, Mingyao,Liu, Yingke,Liu, Jishan,Elsworth, Derek,&Zhou, Fubao.(2019).Micro-scale investigation on coupling of gas diffusion and mechanical deformation of shale.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,175(-),961-970. |
| MLA | Wei, Mingyao,et al."Micro-scale investigation on coupling of gas diffusion and mechanical deformation of shale".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 175.-(2019):961-970. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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