Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023587 |
Response of Induced Seismicity to Injection Rate Reduction: Models of Delay, Decay, Quiescence, Recovery, and Oklahoma | |
Dempsey, David; Riffault, Jeremy | |
2019 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:1页码:656-681 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand |
英文摘要 | When injection-induced seismicity poses a risk to communities, it is common to reduce the injection rate or halt operations. This applies both to individual wells and well clusters, such as those within the Area of Interest for Triggered Seismicity in Western Oklahoma, where in 2016 a 40% volume reduction mandate was imposed by the state regulator. Here we quantify how induced seismicity responds to an injection reduction. We introduce models of pressure diffusion in idealized geometries coupled to steady state pressurization and rate-state models of earthquake triggering. We find that the delay in seismicity onset and then postreduction behaviordecay, sometimes quiescence, and recovery of the seismicity ratedepend on the critical triggering pressure and on diffusion and rate-state parameters. We have adapted our model to replicate the timing of onset, peak, and recent pace of decline of seismicity triggered by wastewater injection in Western Oklahoma. Our analysis implies that diffusivity in the Arbuckle formation is high (between 44 and 277m(2)/s). The critical triggering pressure is inferred to be between 0.021 and 0.077MPa, and fluid overpressure at 4.5-km depth in the basement is estimated to have increased by as much as 0.190MPa. We simulate future seismicity out to 2025 for three scenarios. Fixing the 2018 injection rate, already less than the limit imposed by the state regulator, we find a high likelihood of further M >= 5 earthquakes. This suggests that the volume reduction mandate in Western Oklahoma is, at present levels, inadequate. |
英文关键词 | induced seismicity Oklahoma wastewater disposal Arbuckle Group hydrology seismic hazard |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459536500036 |
WOS关键词 | W 5.8 PAWNEE ; FLUID-INJECTION ; INDUCED EARTHQUAKES ; BASEMENT FAULTS ; ROCK FRICTION ; NORMAL STRESS ; PRESSURE ; TERMINATION ; AFTERSHOCKS ; GRONINGEN |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21112 |
专题 | 资源环境科学 |
作者单位 | Univ Auckland, Dept Engn Sci, Auckland, New Zealand |
推荐引用方式 GB/T 7714 | Dempsey, David,Riffault, Jeremy. Response of Induced Seismicity to Injection Rate Reduction: Models of Delay, Decay, Quiescence, Recovery, and Oklahoma[J]. WATER RESOURCES RESEARCH,2019,55(1):656-681. |
APA | Dempsey, David,&Riffault, Jeremy.(2019).Response of Induced Seismicity to Injection Rate Reduction: Models of Delay, Decay, Quiescence, Recovery, and Oklahoma.WATER RESOURCES RESEARCH,55(1),656-681. |
MLA | Dempsey, David,et al."Response of Induced Seismicity to Injection Rate Reduction: Models of Delay, Decay, Quiescence, Recovery, and Oklahoma".WATER RESOURCES RESEARCH 55.1(2019):656-681. |
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