DOI: 10.1002/grl.50438
论文题名: Stress tensor changes related to fluid injection at the Geysers geothermal field, California
作者: Martínez-Garzón P. ; Bohnhoff M. ; Kwiatek G. ; Dresen G.
刊名: Geophysical Research Letters
ISSN: 0094-8982
EISSN: 1944-8713
出版年: 2013
卷: 40, 期: 11 起始页码: 2596
结束页码: 2601
语种: 英语
英文关键词: fluid-induced seismicity
; focal mechanisms
; stress inversion
Scopus关键词: fluid-induced seismicity
; Focal mechanism
; Geysers geothermal fields
; Principal stress
; Spatio-temporal variation
; Stress inversion
; Temporal evolution
; Uncertainty assessment
; Geothermal fields
; Geysers
; Strike-slip faults
; Tensors
; Water injection
; fluid injection
; fluid-structure interaction
; focal mechanism
; geothermal gradient
; reservoir-induced seismicity
; spatiotemporal analysis
; stress field
; stress resistance
; strike-slip fault
; California
; Geysers
; United States
英文摘要: Studying variations of the stress field in reservoirs caused by massive fluid injection is important toward an improved understanding of geomechanical processes involved. We report on spatio-temporal variations of the local stress tensor orientation at The Geysers geothermal field, California. We apply two stress inversion methods with detailed uncertainty assessments using a selection of events recorded between 2007 and 2012. Our results clearly indicate variations in the orientation of the principal stress axes for the reservoir as a whole showing a normal faulting regime at the reservoir depth between 2 and 3.7 km bounded by a strike-slip regime above and below. Analyzing the temporal evolution of the stress tensor orientation for a prominent seismicity cluster we observe a clear correlation of changes in orientation for σ1-3 with the highest injection rates. These results suggest that temporal changes in the stress tensor orientation could contribute to characterize reservoirs during stimulation. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879941276&doi=10.1002%2fgrl.50438&partnerID=40&md5=f6dd25bab7470bb07a47d41859658808
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6246
Appears in Collections: 气候减缓与适应
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作者单位: Section 3.2 Geomechanics and Rheology, GFZ German Research for Geosciences, Telegrafenberg, 14473 Potsdam, Germany
Recommended Citation:
Martínez-Garzón P.,Bohnhoff M.,Kwiatek G.,et al. Stress tensor changes related to fluid injection at the Geysers geothermal field, California[J]. Geophysical Research Letters,2013-01-01,40(11).