A shear-based breakdown model for the hydraulic fracturing of hot dry rock
文献类型：期刊论文
| 作者 | Ma, Xiao4,5,6; Hu, Dawei4,5; Ma, Dongdong3; Ji, Yinlin2; Zang, Arno2; Wang, Haizhu1; Ma, Yuangang6; Zhou, Hui4,5 |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2025-05-13 |
| 卷号 | 320页码:10 |
| 关键词 | Granite High-temperature True triaxial Hydraulic fracturing Shear-based breakdown model |
| ISSN号 | 0013-7944 |
| DOI | 10.1016/j.engfracmech.2025.111070 |
| 英文摘要 | Hydraulic fracturing is currently an indispensable technique for enhancing reservoir permeability in hot dry rock (HDR). However, the fracture mechanisms of rocks under in situ high-temperature (up to 300 degrees C) and true triaxial stress conditions are poorly understood. In this work, a series of hydraulic fracturing experiments were performed on granite samples under high temperatures and true triaxial stress states. We found that the breakdown pressure of granite decreased with increasing temperature. The fracture mechanism transitioned from toughness-dominated to viscosity-dominated when the temperature increased to 200 degrees C. The diffusion of pore pressure into thermally induced microfractures at elevated temperatures resulted in a reduction in the effective stress surrounding the borehole. Tensile-shear failure, rather than pure tensile failure, was observed under conditions of high three-dimensional stress and elevated temperatures, which was attributed to an increase in the effective major principal stress. Accordingly, two shear-based breakdown models were derived on the basis of the stress field around the pressurized borehole under in situ geothermal conditions, which better fit the experimental data under in situ geothermal conditions than other breakdown models do. The experimental and theoretical analyses confirmed that three-dimensional stress and high-temperature effects are critical for hydraulic fracturing initiation under in situ geothermal conditions. |
| 资助项目 | National Key Research and Development Program of China[2022YFE0137200] ; Na-tional Natural Science Foundation of China[52179114] ; Helmholtz Association's Initiative and Networking Fund for the Helmholtz Young Investigator Group ARES[VH-NG-1516] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001458306300001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36166]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Hu, Dawei |
| 作者单位 | 1.China Univ Petr, Natl Key Lab Petr Resources & Engn, Beijing, Peoples R China 2.Potsdam GFZ German Res Ctr Geosci, Helmholtz Ctr, Potsdam, Germany 3.China Univ Min & Technol, State Key Lab Intelligent Construct & Hlth Operat, Xuzhou 221116, Jiangsu, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 6.State Key Lab Bridge Intelligence & Green Construc, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Xiao,Hu, Dawei,Ma, Dongdong,et al. A shear-based breakdown model for the hydraulic fracturing of hot dry rock[J]. ENGINEERING FRACTURE MECHANICS,2025,320:10. |
| APA | Ma, Xiao.,Hu, Dawei.,Ma, Dongdong.,Ji, Yinlin.,Zang, Arno.,...&Zhou, Hui.(2025).A shear-based breakdown model for the hydraulic fracturing of hot dry rock.ENGINEERING FRACTURE MECHANICS,320,10. |
| MLA | Ma, Xiao,et al."A shear-based breakdown model for the hydraulic fracturing of hot dry rock".ENGINEERING FRACTURE MECHANICS 320(2025):10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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