气候变化领域集成服务门户(CCPortal): Hydraulic Fracturing Induced Seismicity in the Southern Sichuan Basin Due to Fluid Diffusion Inferred From Seismic and Injection Data Analysis

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DOI	10.1029/2019GL084885
	Hydraulic Fracturing Induced Seismicity in the Southern Sichuan Basin Due to Fluid Diffusion Inferred From Seismic and Injection Data Analysis
	Tan Y.; Hu J.; Zhang H.; Chen Y.; Qian J.; Wang Q.; Zha H.; Tang P.; Nie Z.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	In the southern Sichuan Basin, China, the recent increase in the seismic activity has been suspected to be related to hydraulic fracturing stimulation for producing the shale gas. In this study, we used the monitoring data from a local seismic network within the shale gas blocks to study the earthquakes near the shale gas production wells that have detailed injection data. Comparison of the timing of earthquakes and stimulation schedule of the studied well pads indicates an apparent correlation between the seismic activity and hydraulic fracturing. The results of seismic velocity tomography reveal that the reactivation of preexisting faults due to fluid diffusion is the primary cause of the observed earthquakes. Focal mechanism analysis combined with geomechanical modeling indicates that the increased pore pressures resulted from hydraulic fracturing are sufficient to trigger seismic slip on the faults. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Diffusion in liquids; Faulting; Fracture; Hydraulic fracturing; Induced Seismicity; Injection (oil wells); Shale gas; Well stimulation; Fault reactivation; Fluid diffusion; Focal mechanism; Geomechanical model; Seismic activity; Seismic networks; Seismic velocities; Sichuan Basin; Earthquakes; correlation; data assimilation; fault; gas production; hydraulic fracturing; reactivation; seismic velocity; shale gas; tomography; China; Sichuan Basin
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170668
作者单位	School of Earth and Space Sciences; Laboratory of Seismology and Physics of Earth's Interior, University of Science and Technology of China, Hefei, China; Key Laboratory of Submarine Geoscience and Prospecting Techniques MOE, Ocean University of China, Qingdao, China; Geomathematics Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu, China; Mengcheng National Geophysical Observatory, University of Science and Technology of China, Hefei, China; Anhui Wantai Geophysical Technology Company, Hefei, China; Petro China Southwest Oil and Gasfield Company, Chengdu, China
推荐引用方式 GB/T 7714	Tan Y.,Hu J.,Zhang H.,et al. Hydraulic Fracturing Induced Seismicity in the Southern Sichuan Basin Due to Fluid Diffusion Inferred From Seismic and Injection Data Analysis[J],2020,47(4).
APA	Tan Y..,Hu J..,Zhang H..,Chen Y..,Qian J..,...&Nie Z..(2020).Hydraulic Fracturing Induced Seismicity in the Southern Sichuan Basin Due to Fluid Diffusion Inferred From Seismic and Injection Data Analysis.Geophysical Research Letters,47(4).
MLA	Tan Y.,et al."Hydraulic Fracturing Induced Seismicity in the Southern Sichuan Basin Due to Fluid Diffusion Inferred From Seismic and Injection Data Analysis".Geophysical Research Letters 47.4(2020).