气候变化领域集成服务门户(CCPortal): Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection

CCPortal

DOI	10.1073/pnas.2102338118
	Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection
	Zhai G.; Shirzaei M.; Manga M.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:20
英文摘要	Industrial activity away from plate boundaries can induce earthquakes and has evolved into a global issue. Much of the induced seismicity in the United States' midcontinent is attributed to a direct pressure increase from deep wastewater disposal. This mechanism is not applicable where deep basement faults are hydraulically isolated from shallow injection aquifers, leading to a debate about the mechanisms for induced seismicity. Here, we compile industrial, seismic, geodetic, and geological data within the Delaware Basin, western Texas, and calculate stress and pressure changes at seismogenic depth using a coupled poroelastic model. We show that the widespread deep seismicity is mainly driven by shallow wastewater injection through the transmission of poroelastic stresses assuming that unfractured shales are hydraulic barriers over decadal time scales. A zone of seismic quiescence to the north, where injection-induced stress changes would promote seismicity, suggests a regional tectonic control on the occurrence of induced earthquakes. Comparing the poroelastic responses from injection and extraction operations,we find that the basement stress is most sensitive to shallow reservoir hydrogeological parameters, particularly hydraulic diffusivity. These results demonstrate that intraplate seismicity can be caused by shallow human activities that poroelastically perturb stresses at hydraulically isolated seismogenic depths, with impacts on seismicity that are preconditioned by regional tectonics. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Hydrocarbon recovery; Induced seismicity; Wastewater
语种	英语
scopus关键词	hydrocarbon; Article; controlled study; earthquake; geographic information system; geological time; geometry; kernel method; permeability; poroelastic model; pressure; seismicity; statistical model; Texas; wastewater
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238922
作者单位	Berkeley Seismological Laboratory, University of California, Berkeley, CA 94720, United States; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, United States; Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States
推荐引用方式 GB/T 7714	Zhai G.,Shirzaei M.,Manga M.. Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection[J],2021,118(20).
APA	Zhai G.,Shirzaei M.,&Manga M..(2021).Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection.Proceedings of the National Academy of Sciences of the United States of America,118(20).
MLA	Zhai G.,et al."Widespread deep seismicity in the Delaware Basin, Texas, is mainly driven by shallow wastewater injection".Proceedings of the National Academy of Sciences of the United States of America 118.20(2021).