Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR026973 |
Experimental investigation on the movability of water in shale nanopores: A case study of Carboniferous shale from the Qaidam Basin, China | |
Shugang Yang; Qingchun Yu | |
2020-07-17 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | The movability of water in shale nanopores intensely affects the transport and storage of other fluids, and plays an important role in the geological water cycle. To investigate the movability, three shale samples were used to conduct flow experiments using the “steady‐state and step‐by‐step depressurization” method. The experimental results show that the movability of water strongly depends on the pressure gradient. Two water‐related mechanisms, “shear fluidity” and “electro‐viscous effect”, are primarily responsible for the difference in movability between the free water and bound water. The flow of water in these samples deviates from Darcy’s law, and the threshold pressure gradient (TPG) is observed. When the pressure gradient is higher than the TPG, water starts to flow, and the permeability increases with increasing pressure gradient. Based on the analysis of the solid‐liquid interfacial forces, the water in the shale was quantitatively classified into four types (L1 , L2 , L3 and L4 ) according to its movability. The calculation results indicate that most of the water, which could be up to 74.46%~89.73%, is immovable under the experimental conditions. The proportion of movable water increases with increasing pressure gradient, and the relation can be expressed by a quadratic function. The moving ratio was defined as the ratio of the volume of water involved in flow to the total pore volume. The correlation between the moving ratio and permeability is a power function with exponents ranging from 1.16 to 1.43, indicating that the water permeability is sensitive to the moving ratio. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/284205 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Shugang Yang,Qingchun Yu. Experimental investigation on the movability of water in shale nanopores: A case study of Carboniferous shale from the Qaidam Basin, China[J]. Water Resources Research,2020. |
APA | Shugang Yang,&Qingchun Yu.(2020).Experimental investigation on the movability of water in shale nanopores: A case study of Carboniferous shale from the Qaidam Basin, China.Water Resources Research. |
MLA | Shugang Yang,et al."Experimental investigation on the movability of water in shale nanopores: A case study of Carboniferous shale from the Qaidam Basin, China".Water Resources Research (2020). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Shugang Yang]的文章 |
[Qingchun Yu]的文章 |
百度学术 |
百度学术中相似的文章 |
[Shugang Yang]的文章 |
[Qingchun Yu]的文章 |
必应学术 |
必应学术中相似的文章 |
[Shugang Yang]的文章 |
[Qingchun Yu]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论