The effect of temperature on injection-induced shear slip of laboratory faults in sandstone
文献类型：期刊论文
| 作者 | Shen, Nao1,2; Wang, Lei3; Li, Xiaochun1
|
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2024-04-15 |
| 页码 | 19 |
| 关键词 | Induced seismicity Pressurization rate Laboratory fault (fracture) Shear slip Temperature |
| ISSN号 | 1861-1125 |
| DOI | 10.1007/s11440-024-02329-5 |
| 英文摘要 | Fluid injection into subsurface reservoirs may cause existing faults/fractures to slip seismically. To study the effect of temperature on injection-induced fault slip, at a constant confining pressure of 10 MPa, we performed a series of injection-induced shear slip experiments on critically stressed sandstone samples containing saw-cut fractures (laboratory-simulated faults) under varying fluid pressurization rates (0.1 and 0.5 MPa/min, respectively) and temperatures (25, 80, and 140 degrees C, respectively). At 25 degrees C, slow fault slip events with a peak slip velocity of about 0.13 mu m/s were observed on a tested sample in response to a low fluid pressurization rate of 0.1 MPa/min. In contrast, fluid injection with a high pressurization rate of 0.5 MPa/min caused fault slip events with a peak slip rate up to about 0.38 mu m/s. In response to a given fluid pressurization rate, several episodes of slip events with a higher slip velocity were induced at an elevated temperature of 140 degrees C, indicating an appreciable weakening effect at elevated temperatures. We also experimentally constrained the rate-and-state frictional (RSF) parameters at varying effective normal stresses and temperatures by performing velocity-stepping tests. The obtained RSF parameters demonstrate that for a relatively high normal stress, increasing temperature tends to destabilize fault slip. Post-mortem microstructural observations reveal that elevated temperatures promote the generation of abundant fine-grained gouge particles associated with injection-induced shear slip. Our experiments highlight that injection-induced fault slip is affected by temperature-related wear production over the fault surface. |
| 资助项目 | Key Technology Research and Development Program of Shandong[2019YFE0100100] ; National Key R&D Program of China[41972316] ; National Natural Science Foundation of China[SKLGME021003] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001204673800001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41117]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Lei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Changjiang Survey Planning Design & Res Co Ltd, Wuhan 430010, Peoples R China 3.GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany |
| 推荐引用方式 GB/T 7714 | Shen, Nao,Wang, Lei,Li, Xiaochun. The effect of temperature on injection-induced shear slip of laboratory faults in sandstone[J]. ACTA GEOTECHNICA,2024:19. |
| APA | Shen, Nao,Wang, Lei,&Li, Xiaochun.(2024).The effect of temperature on injection-induced shear slip of laboratory faults in sandstone.ACTA GEOTECHNICA,19. |
| MLA | Shen, Nao,et al."The effect of temperature on injection-induced shear slip of laboratory faults in sandstone".ACTA GEOTECHNICA (2024):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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