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Št. zadetkov: 6
Investigation on the depth of slip hanger teeth bite into casing and the mechanical properties of casing under different suspension loads in ultra-deep wells
Yong Chen, Jinjin Tan, Guoping Xiao
Izvirni znanstveni članek
Oznake: WE-type slip hangers;suspension load;slip hanger bite depth;finite element simulation;casing;
There is great difficulty in controlling the setting load of the large-size slip casing hanger in the Northwest Oilfield in China, and a reasonable setting load is of great significance. This paper studied the relationship between slip hanger bite depth and suspension load in the % 273 mm WE-type sl ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Effect of blade coating on a centrifugal pump operation under sediment-laden water flow
Yong Wang, Zilong Zhang, Jie Chen, Houlin Liu, Xiang Zhang, Marko Hočevar
Izvirni znanstveni članek
Oznake: blade coating;vibration;pressure fluctuation;sediment-laden flow;centrifugal pump;
Applying a high strength coating on a blade's surface could significantly prolong the service life of a centrifugal pump under sediment-laden water flow because of its protection. To explore the effect of blade coating, the characteristics of energy, vibration and pressure fluctuation of a centrifug ...
Leto: 2020 Vir: Fakulteta za strojništvo (UL FS)
Effect of coating thickness on a solid-liquid two-phase flow centrifugal pump under water medium
Kaikai Luo, Yong Wang, Houlin Liu, Matevž Dular, Jie Chen, Zilong Zhang
Izvirni znanstveni članek
Oznake: coating thickness;solid-liquid two-phase flow pumps;numerical simulation;pressure fluctuation;radial force;
Spraying a coating on the surface of wet parts of a solid-liquid two-phase flow centrifugal pump could effectively increase its service life. To research the effect of coating thickness on the performance of the pump, a solid-liquid two-phase flow pump with a speed of ns = 81.5 was chosen, and polyu ...
Leto: 2019 Vir: Fakulteta za strojništvo (UL FS)
Research on the adaptability of packers for integrated string fracturing operations in low porosity and low permeability reservoirs
Zhiyong Wang, Hao Yu, Yong Xiao, Zhaoyang Zhao, Zhanghua Lian, Fangxin Chen
Izvirni znanstveni članek
Oznake: low porosity and low permeability reservoirs;integrated pipe string;packer rubber ring;acid fracturing;finite element simulation;
To study the failure of conventional packers in the fracturing and stimulation of low-porosity and low-permeability reservoirs and reduce the failure accidents of packers in the fracturing process, a suitable integrated string packers was selected in the process of fracturing and stimulation in an o ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Application of stereological methods to study the white matter and myelinated fibers therein of rat brain
Shu Yang, Chen Li, Wei Zhang, Weiwei Wang, Jens Randel Nyengaard, Yong Tang
Izvirni znanstveni članek
Oznake:
An efficient and unbiased stereological method was applied to estimate the white matter volume, the total volume, total length and mean diameter of the myelinated fibers in the white matter and the total volume of the myelin sheaths in the white matter of rat brain. The white matter volume was obtai ...
Leto: 2008 Vir: dLib.si Digitalna knjižnica Slovenije
ǂA ǂcarbonate-templated decanuclear mn nanocage with two different silsesquioxane ligands
Kai Sheng, Ran Wang, Xinde Tang, Marko Jagodič, Zvonko Jagličić, Laixue Pang, Jian-Min Dou, Zhi-Yong Gao, Hua-Yu Feng, Chen-Ho Tung, Di Sun
Izvirni znanstveni članek
Oznake: Mn(III)-Mn(IV) spojina;antiferomagnetizem;Mn(III)-Mn(IV) compound;antiferromagnetism;
The mild reaction of the preorganized silsesquioxane precursor with Mn(II) acetate under ambient conditions results in a mixed-valent {MnII 6MnIII4} nanocage (SD/Mn10) which is protected by both acyclic trimer [Si3] and cyclic tetramer [Si4]. Serendipitous capture of atmospheric CO2 as a μ5-carbonat ...
Leto: 2021 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Št. zadetkov: 6
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