气候变化领域集成服务门户(CCPortal): GPS observed horizontal ground extension at the Hutubi (China) underground gas storage facility and its application to geomechanical modeling for induced seismicity

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DOI	10.1016/j.epsl.2019.115943
	GPS observed horizontal ground extension at the Hutubi (China) underground gas storage facility and its application to geomechanical modeling for induced seismicity
	Jiang G.; Qiao X.; Wang X.; Lu R.; Liu L.; Yang H.; Su Y.; Song L.; Wang B.; Wong T.-F.
发表日期	2020
ISSN	0012821X
卷号	530
英文摘要	Induced earthquakes and ground displacements were seldom reported in relation to gas injection or extraction. The Hutubi underground gas storage (HUGS) facility is the largest one in China and is also a unique case with both earthquakes and ground displacements detected during multiple cycles of injection and extraction since 9 June 2013. Unlike previous studies with a primarily seismological focus, here, we conducted quantitative analysis on the geomechanics of seismicity induced by the HUGS through developing a hydrogeologic framework, which systematically integrated geodetic, geophysical and geological data. First, we measured horizontal ground extension and shortening on the order of cm in response to gas injection and extraction of the HUGS at depth using a local GPS network, which was not reported in other regions with induced seismicity. Second, we synthesized a variety of data, including seismic reflection profiles, a newly acquired local velocity model, rock physics measurements, well drilling and logging data, to build up a 2D geomechanical model for the HUGS. Third, based on fully-coupled poroelasticity, we proposed two methods to optimize the permeability of the upper aquifers as well as the reservoir porosity and permeability with constraints from well level, GPS and well pressure data. Numerical simulations using the calibrated 2D model revealed that the horizontal extension due to the reservoir dilation is larger than ground uplift. The observed seismicity on faults without hydraulic connections to the gas repository was probably induced by the poroelastic effect of reservoir dilation. Our study provided a prototype scheme for detecting and characterizing the geomechanical behavior of cyclic fluid injection and extraction in a deep reservoir, which would be applicable to other UGS facilities. © 2019 Elsevier B.V.
关键词	geomechanical modeling horizontal ground extension induced seismicity physical mechanism underground gas storage
英文关键词	Aquifers; Digital storage; Earthquakes; Extraction; Geodetic satellites; Geomechanics; Hydrogeology; Induced Seismicity; Petroleum reservoir engineering; Unattended sensors; Well drilling; Geomechanical behavior; Geomechanical model; Ground displacement; horizontal ground extension; Hydraulic connection; Physical mechanism; Reservoir porosity; Seismic reflection profiles; Underground gas storage; gas storage; geomechanics; GPS; hydrogeology; induced seismicity; modeling; numerical model; quantitative analysis; underground storage; China; Hutubi; Xinjiang Uygur
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202679
作者单位	Earth System Science Programme, The Chinese University of Hong Kong, Hong Kong; Institute of Seismology, China Earthquake Administration, Wuhan, China; Xinjiang Earthquake Administration, Urumqi, China; Institute of Geology, China Earthquake Administration, Beijing, China; School of Geoscience, China University of Petroleum, Qingdao, China; Institute of Geophysics, China Earthquake Administration, Beijing, China
推荐引用方式 GB/T 7714	Jiang G.,Qiao X.,Wang X.,et al. GPS observed horizontal ground extension at the Hutubi (China) underground gas storage facility and its application to geomechanical modeling for induced seismicity[J],2020,530.
APA	Jiang G..,Qiao X..,Wang X..,Lu R..,Liu L..,...&Wong T.-F..(2020).GPS observed horizontal ground extension at the Hutubi (China) underground gas storage facility and its application to geomechanical modeling for induced seismicity.Earth and Planetary Science Letters,530.
MLA	Jiang G.,et al."GPS observed horizontal ground extension at the Hutubi (China) underground gas storage facility and its application to geomechanical modeling for induced seismicity".Earth and Planetary Science Letters 530(2020).