检索结果-南通市图书馆

Research status of earthquake forecasting in hydraulicfracturing induced earthquakes

Earthquake Science 2021年第3期34卷 286-298页

作者： Qian Wang Xinxin Yin Changsheng Jiang Cong Jiang Yan Zhang Hongyu Zhai Yanbao Zhang Guijuan Lai Fengling Yin Institute of Geophysics China Earthquake AdministrationBeijing 100081China Gansu Earthquake Agency Lanzhou 730000China

In the new types of industrial activities including unconventional energy extraction associated with shale gas and hot dry rock,gas reservoir operations,CO2 geological storage,undergoing research on induced earthquake forecasting has become one of the forward positions of current *** for the intense actual demand,the immature research on induced earthquake forecasting has already been applied in pre-assessment of site safety and seismic hazard and risk *** work will review systematically recent advances in earthquake forecasting induced by hydraulic fracturing during industrial production from four aspects:earthquake occurrence probability,maximum expected magnitude forecasting,seismic risk analysis for engineering and social applications and key scientific *** terms of earthquake occurrence probability,we introduce statistical forecasting models such as an improved ETAS and non-stationary ETAS and physical forecasting models such as Seismogenic Index(SI)and hydro-mechanism *** on maximum expected magnitude forecasting has experienced four stages of linear relationship with net injection volume of fluid,power exponential relationship and physical forecasting regarding fault *** seismic risk analysis,we focus on probabilistic seismic hazard assessment and quantitative geological susceptibility ***,this review is extended to key scientific problems that contain obtaining accurate fault scale and environmental stress state of reservoir,critical physical process of runaway rupture,complex mechanism of fault activation as well as physical mechanism and modeling of trailing *** work in understanding induced earthquake forecasting may contribute to unconventional energy development and production,seismic hazard mitigation,emergency management and scientific research as a reference.

关键词： induced earthquakes earthquake forecasting seismic hazard mitigation of earthquake disaster risk

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Source characteristics of the mainshock and aftershocks of the 2019 Changning earthquake sequence:Implications for fluid effects

引用

Science China Earth Sciences 2023年第6期66卷 1321-1333页

作者： Kun DAI Yong ZHENG Rumeng GUO Jianqiao XU School of Physics Huazhong University of Science and TechnologyWuhan 430074China Innovation Academy for Precision Measurement Science and Technology Chinese Academy of SciencesWuhan 430071China State Key Laboratory of Geological Processes and Mineral Resources School of Geophysics and GeomaticsChina University of GeosciencesWuhan 430074China

The 2019 M_(S)6.0 Changning earthquake occurred in the tectonically stable Sichuan Basin,where the epicenter and its adjacent areas are important shale gas and salt mine production fields,resulting in hot debates on whether the seismogenic mechanism of the 2019 Changning earthquake is related to human *** source characteristics and fluid pressure can provide important constraints on whether an earthquake is induced,weinvestigate the seismogenic mechanisms of the mainshock and 9 MW≥4.0 *** overall,the mainshock and the majority of the aftershocks are characterized by relatively shallow focal depths(1‒4 km)and significant non-double-couple(non-DC)***,the mainshock and the aftershocks differ in two aspects:(1)the compensated-linear-vector-dipole components dominate the non-DC components of the mainshock,whereas the isotropic components dominate the most aftershocks;(2)the fluid overpressure of the mainshock is over 30 MPa,whereas the fluid overpressure of the most aftershocks is less than 10 ***,we propose that the mainshock is triggered by weakened fault strength with long-term fluid injection,and that its large non-DC components are associated withcomplex rupture ***,the aftershocks may be triggered by postseismic stress transfer by combining the Coulomb failure stress changes in the poroelastic *** results highlight the possible role of fluid in the occurrence of the Changning earthquake sequence.

关键词： The 2019 Channing earthquake induced earthquakes Non-double-couple components Focal depths Poroelasticity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Connection between earthquakes and deep fluids revealed by magnetotelluric imaging in Songyuan,China

引用

Science China Earth Sciences 2021年第1期64卷 161-176页

作者： Yu TANG Aihua WENG Yue YANG Shiwen LI Jianjun NIU Yanhui ZHANG Yabin LI Jianping LI College of Geo-exploration Sciences&Technology Jilin UniversityChangchun 130026China First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China China Aero Geophysical Survey and Remote Sensing Center for Natural Resources Beijing 100083China Construction Engineering College of Jilin University Changchun 130026China Guangzhou Marine Geological Survey China Geological SurveyGuangzhou 510760China

Songyuan is the most earthquake prone area in northeast *** 2006,earthquakes have occurred in the area in the form of swarms,with a maximum magnitude of M_*** is much controversy about the cause of the Songyuan *** attempted to determine the cause using a three-dimensional electrical conductivity structure inverted from a regional network of magnetotelluric data in the Songyuan *** L-BFGS inversion method was applied,with a fullimpedance tensor data set used as the inversion *** with an evaluation of the earthquake locations,the resistivity model revealed a northeast-oriented hidden fault running through the Songyuan earthquake area(SEA),which was speculated to be the preexisting Fuyu-Zhaodong Fault(FZF).Our resistivity model also found an apparent lithospheric low-resistivity anomaly beneath the earthquake area,which breached the high-resistivity lithospheric mantle and stalled at the base of the crust.A petrophysical analysis showed that this lower crustal low-resistivity anomaly was most likely attributed to hydrated partial melting,which could release water into the lower crust during later magma *** weakening the strength of the FZF,these ascending fluids also increased the pore pressure in the fault,further reducing the shear strength of the *** stress action(a fault strike component of the east-west regional compress),together with possible near-surface disturbances,may drive the fault to slip and trigger the earthquakes in *** is possible that the continuous replenishment of fluids from the deeper mantle forces the Songyuan earthquakes into the form of *** infer that the Songyuan earthquakes could be attributed to a combination of preexisting faults,regional stress,and deep fluids associated with plate subduction,and near surface disturbances might induce the earthquakes in *** Songyuan earthquakes are inherently induced earthquakes,fed by deep fluids.

关键词： Magnetotelluric Electrical resistivity Deep fluids induced earthquakes Northeast China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Spatio-temporal variations of shallow seismic velocity changes in Salton Sea Geothermal Field,California in response to large regional earthquakes and long-term geothermal activities

引用

Earthquake Research Advances 2023年第2期3卷 15-23页

作者： Chengyuan Zhang Zhigang Peng Xiaoyan Liu Chenyu Li State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhanChina School of Earth and Atmospheric Sciences Georgia Institute of TechnologyAtlantaGAUnited States School of Civil Engineering Wuhan UniversityWuhanChina Earth Observatory of Singapore Nanyang Technological UniversitySingapore

We measure spatio-temporal variations of seismic velocity changes in Salton Sea Geothermal Field,California based on cross correlations of daily seismic traces recorded by a borehole seismic network from December 2007 to January *** find clear co-seismic velocity reductions during the 2010 M 7.2 El Mayor–Cucapah,Mexico earthquake at~100 km further south,followed by long-term *** co-seismic reductions are larger with longer post-seismic recoveries in higher frequency bands,indicating that material damage and healing process mostly occurred in the shallow *** addition,the co-seismic velocity reductions are larger for ray paths outside the active fluid injection/extraction *** ray paths inside injection/extraction regions are associated with smaller co-seismic reductions,but subtle long-term velocity *** also build 3D transient water flow models based on monthly injection/extraction rates,and find correlations between several water flow parameters and co-seismic velocity *** interpret the relative lack of co-seismic velocity changes within the geothermal region as unclogging of fracture network due to persistent fluid flows of geothermal *** long-term velocity increase is likely associated with the ground water depletion and subsidence due to net production.

关键词： Seismic velocity changes Salton Sea Geothermal Field Ambient noises induced earthquakes Qinghai-Tibetan Plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on the relationship between geothermal exploitation and seismic activity in Xi

引用

Acta Seismologica Sinica(English Edition) 2001年第4期14卷 434-439页

作者： WU Fu-chun Seismological Bureau of Shaanxi Province Xi’an China The Landslide Office of Shaanxi Province Xi’an China The Managing Office of Mining Exploration of Xi’an Xi’an China

Based on the analysis of the induced earthquakes in China and abroad, we get some ideas about earthquakes induced by pumping water out of a well or injecting water into a well. The induced earthquakes usually occur near the well, and they are generally small earthquakes. The earthquake sources are shallow, and they belong to the main shock-after shock type of earthquake or the swarm-type of earthquake. The magnitude and the quantity of the induced earthquakes obviously depend on the pressure and the quantity of water pumped or injected. These earthquakes happen as soon as pumping or injecting occurrence, or after ten or twenty days, they may occur at the time of injecting mud or injecting high pressure water when a well is being drilled, or at the time when the ground water is being normally exploited. A large quantity of hot water has been exploited since 1990 in Xi'an, and the quantity of water exploited has been increasing year by year, as a result the groundwater level has been dropping with the water pumped out and the water level is high in summer and low in winter. The earthquakes in Xi'an region belong to the solitary-type and they spread outside Xi'an city where the wells are concentrated but no earthquake happens. The seismic frequency and the energy released have no relation with the quantity of water exploitation or the water level in the well. It is considered that geothermal exploitation does not induce earthquakes in and around Xi'an because of its specially geological condition.

关键词： Geothermal exploitation induced earthquakes Relationship

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hydraulic Fracturing, Cumulative Development and earthquakes in the Peace River Region of British Columbia, Canada

引用

Journal of Geoscience and Environment Protection 2021年第5期9卷 55-82页

作者： Allan R. Chapman Chapman Geoscience Ltd. Victoria British Columbia Canada

Unconventional petroleum development involving large volume fluid injection into horizontal well bores, referred to as hydraulic fracturing (HF, or fracking), began in the Montney Trend of northeast British Columbia, Canada, in 2005, quickly initiating earthquakes. Earthquake frequency increased substantially in the Montney by 2008, in relation to the number of wells fracked and the volume of injected frack water. A spatiotemporal filter was used to associate earthquakes with HF wells. A total of 439 earthquakes (M 1.0 - 4.6 (NRCAN catalogue) during 2013-2019 have close association with HF activity, of which 77% are associated with three operators. Fifteen percent of HF wells in the Montney are associated with these earthquakes, while 1.7% of HF wells are associated with M ≥ 3.0 earthquakes. There are strong linear relationships between the maximum earthquake magnitude each year and the annual volume of injected frack fluid. M ≥ 3.0 earthquakes are associated with large cumulative frack water volumes for antecedent time periods of 1 - 3 years, often with fluid injection by multiple operators. Eighty-seven percent of the Montney M ≥ 3.0 earthquakes have associated HF triggering events, but a few are sufficiently distant to be ambiguous. Distances from the induced earthquake epicentres indicate a variety of causal mechanisms are involved. It is concluded that ~60% - 70% of M ≥ 3.0 earthquakes are induced by hydraulic fracturing. HF-induced earthquakes can be considered in part related to the cumulative development density

关键词： Hydraulic Fracturing induced earthquakes Montney Trend

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：