Results 81 to 90 of about 14,340 (257)

Formation and evolution of shale overpressure in deep Wufeng-Longmaxi Formation in southern Sichuan basin and its influence on reservoir pore characteristics

Frontiers in Earth Science
In the deep Longmaxi Formation shale gas reservoirs of the southern Sichuan Basin, strong overpressure is universally developed to varying degrees. However, there is currently a lack of in-depth research on the formation mechanisms, evolutionary patterns,
Shasha Sun, Zhensheng Shi, Dazhong Dong, Wenhua Bai, Lin Wei, Lin Wei, Jia Yin, Jia Yin, Jiajun Qu, Jiajun Qu   +9 more
doaj   +1 more source

Nature of Surface Microcracks on Phosphorus Micro‐Alloyed Copper

Materials and Corrosion, EarlyView.
SSRT tests and microscopic characterization methods were used to study the effect of plastic deformation and environment on the formation of surface microcracks on Cu‐OFP. Results show that, while ambient conditions produced thousands of microcracks per mm2, exposure to sulfide water resulted in fewer microcracks with no evidence of crack growth ...
Ahsan Chonche, Kai Arstila, Sneha Goel, Tiina Ikäläinen, Timo Saario   +4 more
wiley   +1 more source

Perfluorohexanone for Clean Fire Suppression: Mechanisms, System Design, Applications, and Future Directions

Safety Science and Technology, EarlyView.
Driven by halon and high GWP agent phase out, perfluorohexanone is increasingly deployed in enclosures such as data centers, marine machinery spaces, and industrial process lines. This review summarizes application performance, discharge and distribution design, material compatibility, and byproduct control and maps practical gaps for large volume and ...
Zhilei Yu, Haibin Dong, Yanfeng Sheng, Xuelei Xian, Dehua Zhang, Feiran Li, Liang Liu, Junchao Zhao, Heping Zhang   +8 more
wiley   +1 more source

Predictive model of back-wall overpressure behind a cantilever wall

, 2023
To reduce the hazards posed by blast shock waves, important potential targets are usually shielded by cantilever walls. The main factor that indicates whether there is damage is the back-wall overpressure, and of concern here is predicting the back-wall ...
Xinzhe Nian, Jianyuan Wu, Quanmin Xie, Hui Zhou   +3 more
core   +1 more source

Post‐earthquake field assessment and damage correlation of elevated reinforced concrete water tanks in Kahramanmaras/Elbistan, Türkiye

Structural Concrete, EarlyView.
Abstract This study evaluates the seismic performance of elevated reinforced concrete (RC) water tanks in the Elbistan region following the February 6, 2023 Kahramanmaras–Elbistan earthquakes. Field investigations, visual damage surveys, non‐destructive testing (ultrasonic pulse velocity—UPV), concrete compressive strength measurements, peak ground ...
Mustafa Eken
wiley   +1 more source

Formation mechanism and evolution characteristics of deep Permian overpressure in western Well Pen-1 Sag and its periphery， Junggar Basin

Youqi dizhi yu caishoulu
To clarify the formation mechanism and evolution characteristics of the deep Permian overpressure in western Well Pen-1 Sag and its periphery in Junggar Basin， based on the data of drilling， logging， and measured formation pressure， the formation ...
GOU Yujie, ZHANG Fengqi, JIANG Qingchun, LU Xuesong, LIU Gang, WEI Yanzhao, LIU Hailei, JIANG Wenlong   +7 more
doaj   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source

Pressure Relief-Type Overpressure Distribution Prediction Model Based on Seepage and Stress Coupling

, 2023
At present, great progress has been made in the prediction of undercompaction and fluid expansion overpressure. However, in recent years, the field has frequently encountered pressure relief-type overpressure. Different from primary overpressure, such as
Shusheng Guo, Chao Wang, Gaolong Liao, Yuan Shen, Yanfang Gao   +4 more
core   +1 more source

Influence of Arc Faults on Pressure Production Characteristics in AC Turret of UHV Transformers

High Voltage, EarlyView.
ABSTRACT The overpressure caused by arc fault in the oil tank can lead to a transformer explosion. Since the AC turret of transformers serves to connect the transformer windings with the AC busbar, the arc current can be extremely high if an earth fault arc occurs leading to potentially hazardous pressure.
Yuhang Li, Yuanxiang Zhou, Guimin Jiang, Licheng Lu, Hongchuan Dong   +4 more
wiley   +1 more source

Influences of Initial Temperature and Moisture on the Overpressure Rise Due to the Combustion of Alternative Fuel Gases in a Cylindrical Chamber

Chemical Engineering Transactions, 2016
In order to obtain the fundamental physical hazard informations of the alternative fuel gases, a series of labo- scale combustion experiments was carried out.
Tomohiko Imamura, Kyoya Rokugawa, Yoshichika Hirano, Suguru Takizawa   +3 more
doaj   +1 more source