气候变化领域集成服务门户(CCPortal): Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction

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DOI	10.1016/j.earscirev.2020.103182
	Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction
	Rathnaweera T.D.; Wu W.; Ji Y.; Gamage R.P.
发表日期	2020
ISSN	00128252
卷号	205
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.
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
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203854
作者单位	School of Civil and Environmental Engineering, Nanyang Technological University, Singapore; Department of Civil Engineering, Monash University, Australia
推荐引用方式 GB/T 7714	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],2020,205.
APA	Rathnaweera T.D.,Wu W.,Ji Y.,&Gamage R.P..(2020).Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction.Earth Science Reviews,205.
MLA	Rathnaweera T.D.,et al."Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction".Earth Science Reviews 205(2020).