A Preliminary Experimental and Numerical Study on the Applicability of Liquid CO2 Fracturing in Sparse Sandstone
文献类型：期刊论文
| 作者 | Ma, Dongdong2,3; Wu, Yu2,3; Ma, Xiao1; Hu, Dawei4,5; Zhou, Hui4,5; Li, Decheng2,3 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2023-07-04 |
| 卷号 | -期号:-页码:- |
| 关键词 | Sparse sandstone Liquid CO2 Interlayer Permeation effect |
| ISSN号 | 0723-2632 |
| 英文摘要 | As a potential reservoir stimulation fracturing fluid, carbon dioxide (CO2) offers significant advantages in enhancing the recovery of hydrocarbon resources and reducing reservoir damage. Sparse sandstone reservoirs are often plagued by problems such as low recovery rates and severe reservoir damage, necessitating stimulation to improve flow capacity. However, studies on liquid CO2 fracturing tests in sparse sandstones are scarce. A combination of experimental and numerical methods is used to investigate the liquid CO2 fracturing mechanism and its applicability in sparse sandstone. The injection pressure and fracture morphology of water and liquid CO2 fracturing tests in sparse sandstones are analyzed and the influence of the permeation effect on the fracturing mechanism is explored. The applicability of liquid CO2 fracturing in sparse sandstone under different formation stress is investigated by numerical simulation. It is obtained that the breakdown pressure of liquid CO2 fracturing in sparse sandstone is lower, and the activation of interlayer can form a complicated fracture network. Liquid CO2 fracturing has a larger permeation effect, which leads to a lower pressurization rate and severely affects fracturing efficiency. Numerical simulation results demonstrate that the permeation effect descends significantly with formation stress increasing, especially when formation stress reaches 12/17 MPa, and the damage domain can be effectively concentrated. Therefore, when the formation stress reservoir depth is more than 600 m, liquid CO2 fracturing can be preliminarily used in sparse sandstone reservoir stimulation. The results of the study can guide the optimization of the field-scale fracturing treatment. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001020525000001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35320]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Structural Health and Safety of Bridges, Wuhan 430034, Hubei, China 2.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China 3.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China 4.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China 5.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Ma, Dongdong,Wu, Yu,Ma, Xiao,et al. A Preliminary Experimental and Numerical Study on the Applicability of Liquid CO2 Fracturing in Sparse Sandstone[J]. ROCK MECHANICS AND ROCK ENGINEERING,2023,-(-):-. |
| APA | Ma, Dongdong,Wu, Yu,Ma, Xiao,Hu, Dawei,Zhou, Hui,&Li, Decheng.(2023).A Preliminary Experimental and Numerical Study on the Applicability of Liquid CO2 Fracturing in Sparse Sandstone.ROCK MECHANICS AND ROCK ENGINEERING,-(-),-. |
| MLA | Ma, Dongdong,et al."A Preliminary Experimental and Numerical Study on the Applicability of Liquid CO2 Fracturing in Sparse Sandstone".ROCK MECHANICS AND ROCK ENGINEERING -.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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