Effect of pore-bearing fluids on the mechanical behavior of siliceous cemented sandstones containing different clay contents and types
文献类型：期刊论文
| 作者 | Wu, Qingqian1,2; Shi, Lu1,2; Zhang, Liwei1,2; Li, Xiaochun1,2
|
| 刊名 | GEOENERGY SCIENCE AND ENGINEERING
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 240页码:17 |
| 关键词 | Strength weakening Clay mineral Adsorption Swelling CO2 geological storage |
| ISSN号 | 2949-8929 |
| DOI | 10.1016/j.geoen.2024.213058 |
| 英文摘要 | The clay minerals contained in the reservoir rock of CO2 geological storage formations can adsorb fluids and swell, which weakens the rock and promotes deformation. This phenomenon has not been widely investigated due to the complexity of the mineral components of the rock. To study the relationship between fluids in rock pores and the mechanical behavior of clay-bearing reservoir rocks, three types of siliceous cemented sandstones mainly composed of clay minerals and quartz, both dry and saturated with various fluids (i.e. N2, scCO2, H2O), were subjected to conventional triaxial compression tests. The results show that the fluids weakened the mechanical strength of the sandstones, and the degree of weakening depended on the clay composition and the type of fluid, with no significant relationship to the clay content. For the sandstone containing montmorillonite, compared to the dry condition, scCO2 and H2O reduced the peak strength by up to 7.16% and 15.33%, respectively, while for the sandstone containing only kaolinite as clay component, scCO2 and H2O reduced the peak strength by 3.34% and 3.18%, respectively. As a control, N2 weakened the strength of the three types of sandstones between 1.46% and 4.04%. By considering the failure characteristics of sandstone at the macro- and microscales, the failure mechanism of the sandstones was explained from two perspectives: the intercrack surface energy reduction and the swelling of clay. This study offers new perspectives for assessing the mechanical stability of fluid-bearing reservoirs and clarifies the role of clay in the connection between fluids in rock pores and the mechanical behavior of rocks. |
| 资助项目 | National Key R & D Program of China[2019YFE0100100-04] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001345691800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43019]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Shi, Lu |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.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 | Wu, Qingqian,Shi, Lu,Zhang, Liwei,et al. Effect of pore-bearing fluids on the mechanical behavior of siliceous cemented sandstones containing different clay contents and types[J]. GEOENERGY SCIENCE AND ENGINEERING,2024,240:17. |
| APA | Wu, Qingqian,Shi, Lu,Zhang, Liwei,&Li, Xiaochun.(2024).Effect of pore-bearing fluids on the mechanical behavior of siliceous cemented sandstones containing different clay contents and types.GEOENERGY SCIENCE AND ENGINEERING,240,17. |
| MLA | Wu, Qingqian,et al."Effect of pore-bearing fluids on the mechanical behavior of siliceous cemented sandstones containing different clay contents and types".GEOENERGY SCIENCE AND ENGINEERING 240(2024):17. |
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。