DOI: 10.1002/2015GL065028
论文题名: Generation of large postinjection-induced seismic events by backflow from dead-end faults and fractures
作者: McClure M.W.
刊名: Geophysical Research Letters
ISSN: 0094-9434
EISSN: 1944-9165
出版年: 2015
卷: 42, 期: 16 起始页码: 6647
结束页码: 6654
语种: 英语
英文关键词: discrete fracture network
; earthquake simulation
; induced seismicity
; postinjection seismicity
Scopus关键词: Crystalline rocks
; Flow of fluids
; Fracture
; Geophysics
; Seismology
; Discrete fracture network
; Earthquake simulation
; Fluid injections
; Hydraulic stimulations
; Induced seismicity
; Post injection
; Preexisting fracture
; Seismic event
; Earthquakes
; crystalline rock
; faulting
; fluid flow
; hydraulic fracture
; induced seismicity
; slip
英文摘要: Induced seismicity is common during hydraulic stimulation in fractured crystalline rock. Fluid injection pressurizes preexisting fractures, triggering slip and seismicity. Often, the largest induced events occur after the end of injection, which complicates efforts to manage seismic risk. In this study, a three-dimensional discrete fracture network simulator that couples fluid flow with earthquake simulation was used to investigate a novel hypothesis for why large postinjection seismic events occur. Fractures that form dead-end pathways differentially pressurize during injection. After injection is stopped, fluid backflows through the well from the dead-end fractures into larger fractures, inducing additional seismicity and potentially causing events larger than occurred during injection. Our simulations indicate that flowing fluid back to the surface immediately after injection could mitigate this effect and reduce postinjection seismicity. © 2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941747589&doi=10.1002%2f2015GL065028&partnerID=40&md5=e263d16987ca7a84b1745db448467d11
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9049
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Petroleum and Geosystems Engineering, University of Texas at Austin, Austin, TX, United States
Recommended Citation:
McClure M.W.. Generation of large postinjection-induced seismic events by backflow from dead-end faults and fractures[J]. Geophysical Research Letters,2015-01-01,42(16).