DOI: 10.1002/2016GL069083
论文题名: Spontaneous rupture on natural fractures and seismic radiation during hydraulic fracturing treatments
作者: Duan B.
刊名: Geophysical Research Letters
ISSN: 0094-9644
EISSN: 1944-9375
出版年: 2016
卷: 43, 期: 14 起始页码: 7451
结束页码: 7458
语种: 英语
英文关键词: fracture activation
; friction law
; hydraulic fracturing
; microseismicity
; seismic signals
; spontaneous rupture
Scopus关键词: Friction
; Hydraulic fracturing
; Seismic waves
; Seismology
; Shear stress
; Continuous seismic signals
; Fracture network models
; Friction laws
; Hydraulic fracturing treatments
; Microseismicity
; Seismic radiation
; Seismic signals
; spontaneous rupture
; Fracture
英文摘要: We extend spontaneous rupture models in earthquake source studies to analyze fluid injection problems. We perform these analyses on a 2-D fracture network model with a propagating hydraulic fracture (HF) and three sets of natural fractures (NFs). We find that it is difficult for NFs that are either parallel or perpendicular to the HF to slip because of little resolved shear stress on them in the prestress field. Shear failure of optimally oriented NFs depends on frictional parameters, such as the critical slip distance in slip-weakening laws. Slip of NFs near the tips of the HF may affect HF opening. Nonsmooth fracture opening generates isolated spiky seismic signals, while unstable frictional slip radiates strong and continuous seismic signals with long-duration coda waves. These results suggest microseismicity may be primarily generated by unstable frictional slip on NFs with some contribution from nonsmooth opening motions on HFs and/or NFs. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982136137&doi=10.1002%2f2016GL069083&partnerID=40&md5=359258d021f8b1e57482e6e9fafa5e51
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10607
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: Center for Tectonophysics, Department of Geology and Geophysics, Texas A&M University, College Station, TX, United States
Recommended Citation:
Duan B.. Spontaneous rupture on natural fractures and seismic radiation during hydraulic fracturing treatments[J]. Geophysical Research Letters,2016-01-01,43(14).