气候变化领域集成服务门户(CCPortal): Investigation on Two Mw 3.6 and Mw 4.1 Earthquakes Triggered by Poroelastic Effects of Hydraulic Fracturing Operations Near Crooked Lake, Alberta

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DOI	10.1029/2020JB020308
	Investigation on Two Mw 3.6 and Mw 4.1 Earthquakes Triggered by Poroelastic Effects of Hydraulic Fracturing Operations Near Crooked Lake, Alberta
	Hui G.; Chen S.; Chen Z.; He Y.; Wang S.; Gu F.
发表日期	2021
ISSN	21699313
卷号	126 期号:5
英文摘要	A coupled approach of fluid flow and geomechanics is proposed in this study to quantitatively understand the hydraulic fracturing-induced poroelastic effects that activate pre-existing faults and trigger earthquake swarms near Crooked Lake, Alberta. The 3D poroelastic simulation of the seismogenic fault zone is then conducted to characterize the pressure diffusion and stress perturbation that led to fault activation. Results show that the poroelastic effects on the high-permeable damage zones of a conductive-barrier fault triggered the sequential activation of the seismogenic fault in the basement and Winterburn Formation. In addition, the high-permeable damage zones act as conduits for pore pressure diffusion along the fault, whereas the fault core functions as a barrier to prevent crossing flow. The poroelastic effects in terms of pressure diffusion and stress perturbation in response to fluid injection facilitated the fault slip and hence triggered the Mw 3.6 earthquake in the basement formation 40 days after the fracturing operations. Moreover, the mainshock created negative Coulomb failure stress changes, inhibiting further fault slip in the basement formation. Subsequently, the stimulation of another well facilitated poroelastic effects on the fault damage zone in top Winterburn Formation, reactivating the same fault with an Mw 4.1 earthquake 8 days after the initiation of treatments. It is essential to optimize the injection site selection near the existing faults to reduce risks of the induced earthquakes near Crooked Lake. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187164
作者单位	Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB, Canada; College of Energy, Chengdu University of Technology, Chengdu, China; Computer Modeling Group Ltd., Calgary, AB, Canada; PetroChina Research Institute of Petroleum Exploration and Development, Beijing, China
推荐引用方式 GB/T 7714	Hui G.,Chen S.,Chen Z.,et al. Investigation on Two Mw 3.6 and Mw 4.1 Earthquakes Triggered by Poroelastic Effects of Hydraulic Fracturing Operations Near Crooked Lake, Alberta[J],2021,126(5).
APA	Hui G.,Chen S.,Chen Z.,He Y.,Wang S.,&Gu F..(2021).Investigation on Two Mw 3.6 and Mw 4.1 Earthquakes Triggered by Poroelastic Effects of Hydraulic Fracturing Operations Near Crooked Lake, Alberta.Journal of Geophysical Research: Solid Earth,126(5).
MLA	Hui G.,et al."Investigation on Two Mw 3.6 and Mw 4.1 Earthquakes Triggered by Poroelastic Effects of Hydraulic Fracturing Operations Near Crooked Lake, Alberta".Journal of Geophysical Research: Solid Earth 126.5(2021).