Article
Engineering, Petroleum
Guiyun Gao, Chandong Chang, Chenghu Wang, Yanyong Li, Jin Jia
Summary: This study explores the relationship between pressure changes and induced seismicity by studying the stress state changes and faulting susceptibility of the Hutubi gas reservoir in northwest China. It was found that the vertical stress and minimum horizontal principal stress gradually approached each other after gas injection. Earthquake swarms occurred during the increasing pore pressure phase when the slip tendency reached a certain value. This study provides a possible method for induced earthquake analysis associated with gas injection and extraction from the perspective of stress state change and faulting susceptibility.
Article
Energy & Fuels
Ye Zhang, Haijun Mao, Zhiping Zhang, Shu Jiang, Yiming Liu
Summary: This paper reports a ground natural gas leaking event at the Fuling shale gas field. By investigating and studying the leaking spots at different locations, the cause of the leakage incident was determined to be mainly due to gas leakage caused by fracture development. The research results have certain guiding significance for the prevention and treatment of similar leakage incidents.
Article
Geochemistry & Geophysics
Mohammadreza Jamalreyhani, Lea Pousse-Beltran, Pinar Buyukakpinar, Simone Cesca, Edwin Nissen, Abdolreza Ghods, Jose Angel Lopez-Comino, Mehdi Rezapour, Mahdi Najafi
Summary: A long-lived earthquake cluster in the Fars arc of the Zagros Simply Folded Belt, potentially influenced by the Shanul natural gas field operations, highlights the challenge of distinguishing between anthropogenic and natural seismicity in a region with high natural seismic activity. Understanding this distinction is crucial for hazard and risk assessment in the seismically active and resource-rich Zagros region.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Engineering, Civil
Zhiyu Qi, Zheming Shi, Todd C. Rasmussen
Summary: Accurate estimation of aquifer hydraulic parameters is essential for effective groundwater management. This study utilizes the time-and frequency-domain methods of barometric pressure and earth tide response to estimate the transmissivity and specific storage of an aquifer, using the Rongchang well in Southwest China as a case study. The results show significant variations in specific storage and transmissivity estimated by the four different methods, with the slug test yielding larger transmissivity values compared to the other methods. The uncertainties introduced by model assumptions overshadow the errors in the calculation process. The tidal response method averages the hydraulic properties over a larger area than the CBP model for the Rongchang well.
JOURNAL OF HYDROLOGY
(2023)
Article
Geochemistry & Geophysics
Guijuan Lai, Changsheng Jiang, Weilai Wang, Xinglin Lei, Long Zhang, Guangyao Cai, Haobo Gong, Xiangyun Guo, Mingfei Chen
Summary: On September 15, 2021, a Ms 6.0 earthquake occurred in Luxian County, southern Sichuan basin, China, causing significant damage and casualties. By analyzing data from temporary and permanent stations, researchers identified an increase in seismic activity since July 2021, with earthquakes showing specific directional patterns. The earthquake sequence, which occurred in an area with no previous notable seismic activity, was found to be associated with a blind thrust fault dipping to the southwest. These findings provide valuable insights for understanding local seismic risk and conducting future studies on the Luxian earthquake.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Lingli Li, Jinjie Wang, Chaoxian Yang, Chaofu Wei
Summary: This study examines the implementation and adjustment of general land-use planning in Rongchang District, showing that planning can effectively guide land use direction, but faces challenges such as frequent adjustments and deviations between planned and actual land use.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Astronomy & Astrophysics
Edward J. Shaya, R. Brent Tully, Daniel Pomarede, Alan Peel
Summary: The trajectories of galaxies systems since z=4 are studied through numerical action reconstructions. The distances are adjusted to minimize departures from observed redshifts. The best model has H(0)=73 km s(-1) Mpc(-1) and a density arising from interhalo matter as from halos. The fraction of matter in the interhalo medium matches that in n-body simulations.
ASTROPHYSICAL JOURNAL
(2022)
Article
Environmental Studies
Zhangfeng Yao, Kunhui Ye, Liang Xiao, Xiaowei Wang
Summary: Recent years have witnessed the global proliferation and integration of transportation systems in urban agglomeration, with core cities playing a vital role in influencing adjacent cities to formulate transportation networks. The radiation effect of transportation networks in urban agglomeration follows a compact trend, highlighting the dominance of core cities in the overall transportation network.
Article
Geochemistry & Geophysics
Pengliang Yu, David Dempsey, Antonio Pio Rinaldi, Aimee Calibugan, Vanille A. Ritz, Rosalind Archer
Summary: Data-driven models were used to study the correlation between fluid injection and microseismicity in the geothermal fields of Rotokawa (New Zealand) and Hellisheioi (Iceland). The models helped determine the wells with the strongest correlation and explain this association in a reservoir context. However, no link was found between rapid changes in injection rate and seismicity spikes, as suggested by some theoretical models.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Environmental Sciences
Lizhou Zhang, Tippawan Liabsuetrakul
Summary: This study aimed to measure the differences in risk perception among local residents living at different distances from a waste incineration plant (WIP) and explore other factors associated with risk perception. The study found that risk perception was not significantly different between residents living within 0-3 km and 3-8 km from the WIP after adjusting for other variables. Social trust was found to be an important factor in alleviating residents' risk perceptions, and this effect was further influenced by the distance from the WIP.
ENVIRONMENTAL RESEARCH COMMUNICATIONS
(2023)
Article
Environmental Sciences
Linfa Fang, Chengyu Chen, Fen Zhang, Esmat F. Ali, Binoy Sarkar, Jorg Rinklebe, Sabry M. Shaheen, Xinping Chen, Ran Xiao
Summary: Veterinary antibiotics (VAs), including tetracyclines and quinolones, were detected in vegetable soils in the Chongqing region of China. These VAs pose medium to high risks to the ecosystem and antimicrobial resistance. Socioeconomic conditions, farmers' education levels, agricultural practices, and soil properties were identified as the main factors affecting VAs accumulation and environmental risks.
ENVIRONMENTAL RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Yijia Wu, Hongming Tang, Jing Li, Zhi Gao, Bei Yang, Cheng Yang, Tian Tang
Summary: This study focuses on the Long 1(1) sub-member of the Wufeng Formation and the Longmaxi Formation in the East Weiyuan-North Rongchang area of the southern Sichuan Basin. By analyzing core, logging, production test data, as well as using various analysis methods, the composition, geochemical characteristics, and reservoir structure of the shale are studied. The results show that the organic matter maturity and TOC content are high, and organic pores and fractures are important reservoir spaces.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
Jing Lu, Yuhu Zhang, Mingxing Chen, Lu Wang, Shaohua Zhao, Xiao Pu, Xuegang Chen
Summary: Using satellite observations to estimate PM2.5 concentrations is feasible for monitoring air pollution, with a Random Forest model performing well in studying the long-term spatiotemporal variations of PM2.5 concentrations in the Beijing-Tianjin-Hebei region and its surrounding areas. The study found a decreasing trend in PM2.5 concentrations from 2002 to 2018, with the worst pollution occurring in winter and a U-shaped pattern in monthly concentrations.
Article
Energy & Fuels
Hui Hu, Yu-Qi Zhu, Si-Yue Li, Zheng Li
Summary: The development of the shale gas industry may lead to a decrease in job opportunities and negatively impact population growth.
Article
Geosciences, Multidisciplinary
Juan P. Acevedo, Casee R. Lemons, Michael H. Young, Guin McDaid, Bridget R. Scanlon
Summary: This study compares subsurface injection of produced water to the increased number of earthquakes in the panhandle region of Texas. The results indicate that a significant portion of earthquakes in the area can be attributed to underground injection control and oil and gas practices. The research also identifies regions where future earthquakes may be induced by current operations.
Article
Geosciences, Multidisciplinary
Chaodi Xie, Xinglin Lei, Xiaoyan Zhao, Qingbo Ma, Simeng Yang, Yingnan Wang
JOURNAL OF ASIAN EARTH SCIENCES
(2017)
Article
Engineering, Geological
Xiaying Li, Xinglin Lei, Qi Li
ROCK MECHANICS AND ROCK ENGINEERING
(2018)
Article
Geochemistry & Geophysics
Lifen Zhang, Xinglin Lei, Wulin Liao, Jinggang Li, Yunsheng Yao
Article
Environmental Sciences
Yi Zhang, Ziqiu Xue, Hyuck Park, Ji-Quan Shi, Tamotsu Kiyama, Xinglin Lei, Yankun Sun, Yunfeng Liang
WATER RESOURCES RESEARCH
(2019)
Article
Chemistry, Multidisciplinary
Xinglin Lei, Shinian Li, Liqiang Liu
APPLIED SCIENCES-BASEL
(2018)
Article
Geochemistry & Geophysics
Ying-Hui Yang, Jyr-Ching Hu, Qiang Chen, Xinglin Lei, Jingjing Zhao, Weile Li, Rui Xu, Chun-Ying Chiu
Summary: The 6.0 magnitude earthquake in Sichuan's Changning county in June 2019 was possibly influenced by artificial pressure injections, geological conditions, and previous seismic events. The shallow depth and long slip distance indicate that the aftershocks with different motion patterns may be affected by high pore pressure.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Yi Zhang, Xinglin Lei, Tsutomu Hashimoto, Ziqiu Xue
Summary: This study demonstrates that high-resolution fiber optic distributed strain sensing (DSS) tools can successfully measure subtle elastic rock deformations during aquifer pumping tests, providing hydraulic parameter information. The results show that the simultaneous estimation of permeability and compressibility is possible using DSS data at low noise levels, but estimation difficulties arise when the data contain large noise.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
M. Kitamura, T. Hirose, X. Lei
Summary: This study determined the V-p-C-0 relationship in the Nankai accretionary prism down to around 3.2 km, revealing that sediments in this area tend to be weaker than estimated by other empirically determined V-p-C-0 relationships. Additionally, the study found that V-p generally increased with decreasing porosity in the accretionary prism sediments.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Shuai Wang, Guoyan Jiang, Xinglin Lei, Andrew J. Barbour, Xibin Tan, Caijun Xu, Xiwei Xu
Summary: Three destructive earthquakes occurred in the Changning shale gas field in the southwest Sichuan Basin, China from 2017 to 2019. These earthquakes were most likely induced by direct injection of pressurized fluids into fault zones. The earthquakes mainly ruptured sedimentary formations above the shale gas bed, with slip magnitudes ranging from 8.5 to 15 cm.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Min Liu, Lu Li, Miao Zhang, Xinglin Lei, Mladen R. Nedimovic, Alexandre P. Plourde, Rumeng Guo, Weitao Wang, Hongyi Li
Summary: Using a temporary dense seismic array, machine-learning-based detection, and accurate relocation, we identified a complex 3D fault zone accommodating a small earthquake swarm near Yunlong city, western Yunnan, China from February to May 2013. The swarm was primarily driven by pressurized fluid and likely initiated by stress fluctuations caused by a possible aseismic slip. The complexity of the initiation and evolution of the swarm was strongly controlled by 3D fault geometry.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Yingwen Zhao, Guoyan Jiang, Xinglin Lei, Caijun Xu, Bin Zhao, Xuejun Qiao
Summary: To understand the mechanism behind the Luxian earthquake that occurred on 15 September 2021 near an active hydraulic fracturing well pad, we utilized seismic waveforms, satellite imagery, and GPS data. Our findings indicate that the earthquake originated from a previously unmapped southwest-dipping reverse fault intersecting with a horizontal well on the well pad. The slip occurred below the shale gas bed but above the crystalline basement. Further analysis revealed that pore pressure increased near the hypocenter, likely due to fracking fluid injected through the wells, which ultimately triggered the Luxian earthquake.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Geological
Xiaying Li, Xinglin Lei, Haimeng Shen, Qi Li
Summary: The distribution of pore water significantly affects the mechanical property of rocks. In this study, the effect of heterogeneous distribution of pore water with high pressure on lower Shaximiao sandstone was investigated. It was found that flooding region with higher pore pressure benefits earlier fracturing, with fractures initiating in the saturated region and migrating towards partially saturated and dry regions. The formation of complex microcrack network and induced seismicity with higher b-value around the wet/dry boundary suggests the potential of developing an interactive wet/dry mixed fracturing technology to facilitate the formation of complex fracture networks and reduce the risk of induced earthquakes.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Jinrong Su, Xinglin Lei, Jun Li, Chunmei Huang
Summary: This study comprehensively analyzes the detailed seismogenic fault structure of the earthquake swarm that occurred in the Maerkang area on June 9, 2022. The results show that the swarm was not directly related to the nearby mapped fault, but rather resulted from the successive activation of a series of unknown faults. The findings provide insights into the tectonic stress environment of the Bayan Har plate and offer verifiable datasets for further research.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Guijuan Lai, Changsheng Jiang, Weilai Wang, Xinglin Lei, Long Zhang, Guangyao Cai, Haobo Gong, Xiangyun Guo, Mingfei Chen
Summary: On September 15, 2021, a Ms 6.0 earthquake occurred in Luxian County, southern Sichuan basin, China, causing significant damage and casualties. By analyzing data from temporary and permanent stations, researchers identified an increase in seismic activity since July 2021, with earthquakes showing specific directional patterns. The earthquake sequence, which occurred in an area with no previous notable seismic activity, was found to be associated with a blind thrust fault dipping to the southwest. These findings provide valuable insights for understanding local seismic risk and conducting future studies on the Luxian earthquake.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Zhiwei Wang, Xinglin Lei, Shengli Ma, Xiaolong Wang, Yongge Wan
GEOPHYSICAL RESEARCH LETTERS
(2020)