DOI: 10.1016/j.earscirev.2020.103182
论文题名: Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction
作者: Rathnaweera T.D. ; Wu W. ; Ji Y. ; Gamage R.P.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 205 语种: 英语
中文关键词: Earthquake prediction
; Fractures and faults
; Geothermal energy
; Injection-induced seismicity
; THMC coupling
英文关键词: complexity
; corrosion
; earthquake prediction
; enhanced geothermal system
; fault zone
; geothermal energy
; induced seismicity
; pore pressure
; seismic moment
; temperature effect
; thermohydromechanics
英文摘要: Injection-induced seismicity has become a major barrier to the development of geothermal energy, because the complexity of fault behaviors and the lack of physical fundamentals make it extremely difficult to assess, predict, and control during geothermal energy extraction. The motivations of this review include, (1) to identify the recent advances in understanding and modelling of coupled thermo-hydro-mechanical-chemical (THMC) processes in enhanced geothermal systems (EGS), and (2) to apply the THMC processes for improving our ability to predict the occurrence of the anthropogenic earthquakes. Fault activation is associated with several processes, including pore pressure diffusion, temperature alteration and stress-aided corrosion, and can be simulated by pore-scale modelling. However, there is still a rudimentary understanding of how these processes fit together with the spatial and temporal distribution of the induced earthquakes. Uncertainty in the seismic moment prediction, such as the interaction between the reservoir operations and fault responses, hinders the development of EGS. The current challenges in the earthquake prediction include the quantification of stress state, complexity of reservoir structure, and proper strategy of fluid injection. Cyclic soft stimulation and borehole seismometer feedback have been successfully used to mitigate the risks associated with fluid injection. Nevertheless, in some circumstances, the activation of nearby blind, critically stressed faults is uncontrollable, no matter how much fluid is injected into the reservoir. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166223
Appears in Collections: 气候变化与战略
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作者单位: School of Civil and Environmental Engineering, Nanyang Technological University, Singapore; Department of Civil Engineering, Monash University, Australia
Recommended Citation:
Rathnaweera T.D.,Wu W.,Ji Y.,et al. Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction[J]. Earth Science Reviews,2020-01-01,205