Geomechanical analysis of fluid injection and seismic fault slip for theMw4.8 Timpson, Texas, earthquake sequence

2016 ◽  
Vol 121 (4) ◽  
pp. 2798-2812 ◽  
Author(s):  
Zhiqiang Fan ◽  
Peter Eichhubl ◽  
Julia F. W. Gale
Keyword(s):  
Fault Slip ◽  
Earthquake Sequence ◽  
Fluid Injection ◽  
Seismic Fault ◽  
Geomechanical Analysis

Numerical simulation of fluid injection-induced fault slip in heterogeneous shale formations

2021 ◽  
Vol 134 ◽  
pp. 104120
Author(s):  
Yijin Zeng ◽  
Qinghua Lei ◽  
Zineng Wang ◽  
Shidong Ding ◽  
Kui Liu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fault Slip ◽  
Fluid Injection ◽  
Shale Formations

Carbon-forming reactions under a reducing atmosphere during seismic fault slip

Geology ◽  
2014 ◽  
Vol 42 (9) ◽  
pp. 787-790 ◽  
Author(s):  
Kiyokazu Oohashi ◽  
Raehee Han ◽  
Takehiro Hirose ◽  
Toshihiko Shimamoto ◽  
Kentaro Omura ◽  
...  
Keyword(s):  
Fault Slip ◽  
Reducing Atmosphere ◽  
Seismic Fault

A New Insight into the Influence of Composition of Fault Rocks on Aseismic and Seismic Fault Slip

2019 ◽  
Vol 93 (3) ◽  
pp. 760-762
Author(s):  
Xiangli HE ◽  
Haibing LI ◽  
Huan WANG ◽  
Jialiang SI ◽  
Lei ZHANG ◽  
...  
Keyword(s):  
Fault Slip ◽  
Fault Rocks ◽  
Seismic Fault ◽  
Insight Into

scholarly journals Fault slip potential induced by fluid injection in the Matouying EGS field, Tangshan seismic region, North China

2022 ◽  
Author(s):  
Chengjun Feng ◽  
Guangliang Gao ◽  
Shihuai Zhang ◽  
Dongsheng Sun ◽  
Siyu Zhu ◽  
...  
Keyword(s):  
Stress Field ◽  
North China ◽  
Active Faults ◽  
Fault Slip ◽  
Quantitative Risk Assessment ◽  
Fluid Injection ◽  
Enhanced Geothermal Systems ◽  
Geothermal Systems ◽  
Seismic Region ◽  
Hydraulic Stimulation

Abstract. The Tangshan region is one of the most seismically active areas in the North China, and the 1976 M 7.8 earthquake occurred on July 28th near the Tangshan fault zone. The Matouying Enhanced Geothermal Systems (EGS) field is located ~90 km away from Tangshan City. Since the late 2020, preliminary hydraulic stimulation tests have been conducted at depths of ~3965–4000 m. Fluid injection into geothermal reservoir facilitates heat exchanger system. However, fluid injection may also induce earthquakes. In anticipation of the EGS operation at the Matouying uplift, it is essential to assess how the fault slip potential of the nearby active and quiescent faults will change in the presence of fluid injection. In this study, we first characterize the ambient stress field in the Tangshan region by performing stress tensor inversions using 98 focal mechanism data (ML ≥ 2.5). Then, we estimate the principal stress magnitudes near the Matouying EGS field by analyzing in situ stress measurements at shallow depths (~600–1000 m). According to these data, we perform a quantitative risk assessment using the Mohr-Coulomb framework in order to evaluate how the main active faults might respond to hypothetical injected-related pore pressure increases due to the upcoming EGS production. Our results mainly show that most earthquakes in the Tangshan seismic region have occurred on the faults that have relatively high fault slip potential in the present ambient stress field. At well distances of less than 15 km, the probabilistic fault slip potential on most of the boundary faults increase with continuing fluid injection over time, especially on these faults with well distances of ~6–10 km. The probabilistic fault slip potential increases linearly with the fluid injection rate. However, the FSP values decrease exponentially with increased unit permeability. The case study of the Matouying EGS field has important implications for the deep geothermal exploitation in China, especially for Gonghe EGS (in Qinghai province) and Xiong’an New Area (in Hebei province) geothermal reservoirs that are close to the Quaternary active faults. Ongoing injection operations in the regions should be conducted with these understandings in mind.

Frictional melting of clayey gouge during seismic fault slip: Experimental observation and implications

2014 ◽  
Vol 41 (15) ◽  
pp. 5457-5466 ◽  
Author(s):  
Raehee Han ◽  
Takehiro Hirose ◽  
Gi Young Jeong ◽  
Jun-ichi Ando ◽  
Hideki Mukoyoshi
Keyword(s):  
Experimental Observation ◽  
Fault Slip ◽  
Seismic Fault ◽  
Frictional Melting

Coseismic deformation and multi-fault slip model of the 2019 Mindanao earthquake sequence derived from Sentinel-1 and ALOS-2 data

2021 ◽  
Vol 799 ◽  
pp. 228707
Author(s):  
Lei Zhao ◽  
Chunyan Qu ◽  
Xinjian Shan ◽  
Dezheng Zhao ◽  
Wenyu Gong ◽  
...  
Keyword(s):  
Fault Slip ◽  
Earthquake Sequence ◽  
Coseismic Deformation ◽  
Slip Model
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