气候变化领域集成服务门户(CCPortal): Hydromechanical Controls on the Spatiotemporal Patterns of Injection-Induced Seismicity in Different Fault Architecture: Implication for 2013

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DOI	10.1029/2020JB020402
	Hydromechanical Controls on the Spatiotemporal Patterns of Injection-Induced Seismicity in Different Fault Architecture: Implication for 2013–2014 Azle Earthquakes
	Chang K.W.; Yoon H.
发表日期	2020
ISSN	21699313
卷号	125 期号:9
英文摘要	Recent observations of seismic events at the subsurface energy exploration sites show that spatial and temporal correlations sometimes do not match the spatial order of the known or detected fault location from the injection well. This study investigates the coupled flow and geomechanical control on the patterns of induced seismicity along multiple basement faults that show an unusual spatiotemporal relation with induced seismicity occurring in the far field first, followed by the near field. Two possible geological scenarios considered are (1) the presence of conductive hydraulic pathway within the basement connected to the distant fault (hydraulic connectivity) and (2) no hydraulic pathway, but the coexistence of faults with mixed polarity (favorability to slip) as observed at Azle, TX. Based on the Coulomb stability analysis and seismicity rate estimates, simulation results show that direct pore pressure diffusion through a hydraulic pathway to the distant fault can generate a larger number of seismicity than along the fault close to the injection well. Prior to pore pressure diffusion, elastic stress transfer can initiate seismic activity along the favorably oriented fault, even at the longer distance to the well, which may explain the deep 2013–2014 Azle earthquake sequences. This study emphasizes that hydrological and geomechanical features of faults will locally control poroelastic coupling mechanisms, potentially influencing the spatiotemporal pattern of injection-induced seismicity, which can be used to infer subsurface architecture of fault/fracture networks. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Azle earthquake; fault architecture; hydromechanical coupling; induced earthquake
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187622
作者单位	Geotechnology and Engineering Department, Sandia National Laboratories, Albuquerque, NM, United States; Geomechanics Department, Sandia National Laboratories, Albuquerque, NM, United States
推荐引用方式 GB/T 7714	Chang K.W.,Yoon H.. Hydromechanical Controls on the Spatiotemporal Patterns of Injection-Induced Seismicity in Different Fault Architecture: Implication for 2013–2014 Azle Earthquakes[J],2020,125(9).
APA	Chang K.W.,&Yoon H..(2020).Hydromechanical Controls on the Spatiotemporal Patterns of Injection-Induced Seismicity in Different Fault Architecture: Implication for 2013–2014 Azle Earthquakes.Journal of Geophysical Research: Solid Earth,125(9).
MLA	Chang K.W.,et al."Hydromechanical Controls on the Spatiotemporal Patterns of Injection-Induced Seismicity in Different Fault Architecture: Implication for 2013–2014 Azle Earthquakes".Journal of Geophysical Research: Solid Earth 125.9(2020).