Search Results - "Yuqiang, Xu"

Dynamic Characteristics of Downhole Bit Load and Analysis of Conversion Efficiency of Drill String Vibration Energy by Xu, Yuqiang, Zhang, Hongning, Guan, Zhichuan

“…The longitudinal vibration of the drill pipe contains considerable energy which can be used to improve the rock-breaking efficiency during drilling. It is very…”
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Experimental study on ultrasonic wave propagation characteristics of gas-liquid two-phase flow in riser annulus by Yuqiang, Xu, Yucong, Wang, Yang, Tian, Pinyaeva, Tatiana, Zhichuan, Guan

“…•An experimental device was established to simulate gas kick in the riser annulus.•The waveform obtained by wavelet denoising method is more precise than…”
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Sensitivity analysis of the temperature profile changing law in the production string of a high-pressure high-temperature gas well considering the coupling relation among the gas flow friction, gas properties, temperature, and pressure by Cao, Lihu, Sun, Jinsheng, Zhang, Bo, Lu, Nu, Xu, Yuqiang

“…The temperature profile plays an important role in well integrity, flow assurance, and well test. Meanwhile, the impact of engineering conditions should not be…”
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Numerical Simulation Study on Propagation of Initial Microcracks in Cement Sheath Body during Hydraulic Fracturing Process by Xu, Yuqiang, Yan, Yan, Xu, Shenqi, Guan, Zhichuan

“…Microcracks caused by perforating operations in a cement sheath body and interface have the potential to further expand or even cause crossflow during…”
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Mechanical properties, crystallization and melting behaviors of carbon fiber-reinforced PA6 composites by Liang, Jicai, Xu, Yuqiang, Wei, Zhiyong, Song, Ping, Chen, Guangyi, Zhang, Wanxi

“…Polyamide-6 (PA6)/carbon fiber (CF) composites were prepared by melt-extrusion via continuous fiber fed during extruding. The mechanical, thermal properties,…”
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Numerical Simulation Study of Hydraulic Fracturing Nozzle Erosion in Deep Well by Xu, Yuqiang, Li, Qiandeng, Li, Bingshuo, Guan, Zhichuan

“…Hydraulic jet fracturing technology is one of the main means to develop low permeability and deep reservoirs. However, due to the large displacement and high…”
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Controlled release of minocycline in hydroxyapatite/chitosan composite for periodontal bone defect repair by GAO, Haochen, GE, Kuikui, XU, Yuqiang, WANG, Yihan, LU, Min, WEI, Yibo, ZHU, Qiang, HAN, Xu, HUANG, Qingshan, CAO, Zhizhong

“…The aim was to obtain bone repair materials with sustained release of minocycline and evaluate the effect in periodontal bone defect repair. Two complex…”
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Research on the Erosion Resistance of High-Pressure Liquid–Solid Two-Phase Flow Junction Drilling Spool by Li, Qiandeng, Guan, Zhichuan, Xu, Yuqiang, Li, Xuefeng, Fan, Chaobin, Fang, Xiaoqing

“…During drilling and spraying operations, the main cause of wear and even failure of spools is the impact of rock-carrying fluid on their inner wall. In order…”
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Study on Dynamic Characteristics of Drill String Considering Rock-Breaking Process by Liang, Deyang, Guan, Zhichuan, Xu, Yuqiang, Liu, Yongwang

“…Using various tools to obtain downhole data to reach a precise pore pressure model is an important means to predict overpressure. Most downhole tools are…”
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Measurement of wellbore leakage in high‐pressure gas well based on the multiple physical signals and history data: Method, technology, and application by Zhang, Bo, Pan, Zhaocai, Cao, Lihu, Xie, Junfeng, Chu, Shengli, Jing, Yinghua, Lu, Nu, Sun, Tengfei, Li, Cheng, Xu, Yuqiang

“…Leakage is one of the most serious challenges for the safe production of high‐pressure gas wells for its high risks, including abnormal annular pressure,…”
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A Theoretical Model of Residual Magnetic Field around a Pre-Magnetized Casing String by Shi, Yucai, Jia, Dongyue, Guan, Zhichuan, Xu, Yuqiang, Yang, Weixing, Zhang, Duanrui

“…In the field of petroleum drilling engineering, passive magnetic ranging technology is generally used for specialized drilling operations such as connecting…”
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Research on Weight-on-bit Self-adjusting Dual-diameter PDC Bit Design and Effect Evaluation Utilizing Stress-Releasing Effect of Rock at Bottomhole by Hu, Huaigang, Guan, Zhichuan, Wang, Bin, Lu, Baoping, Chen, Weiqing, Xu, Yuqiang, Liu, Yongwang

“…Rock-breaking efficiency is not so satisfied using the conventional PDC bit, especially in the hard, soft–hard interbedded, and strong abrasive formations in…”
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A Powerful Build-Up Rate (BUR) Prediction Method for the Static Push-the-Bit Rotary Steerable System (RSS) by Shi, Yucai, Teng, Zhixiang, Guan, Zhichuan, Bai, Jing, Lv, Wei, Liao, Hualin, Xu, Yuqiang, Liu, Yongwang

“…The RSS has been widely used in directional drilling. In order to enhance wellpath control accuracy and efficiency of the static push-the-bit RSS, a powerful…”
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Formation interval determination method of MPD based on risk aversion and casing level optimization by Xu, Yuqiang, Han, Chao, Sun, Jiarui, He, Baolun, Guan, Zhichuan, Zhao, Yishu

“…MPD is one of the effective means to solve the drilling problems in deep-water and deep-stratum complex formations such as narrow pressure window. To reduce…”
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Influence of Mechanical Rotary Percussion Tool on Friction Drag in Horizontal Wells by Guan, Zhichuan, Liang, Deyang, Xu, Yuqiang, Liu, Yongwang, Wang, Jiachang, Tao, Xinghua, Ma, Guangjun

“…Friction between the drill string and the well wall is one of the key factors restricting the rate of penetration (ROP) in the process of sliding drilling in a…”
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Relationship between oxide identity and electrocatalytic activity of platinum for ethanol electrooxidation in perchlorate acidic solution by You, Xinyu, Han, Jiaxing, Del Colle, Vinicius, Xu, Yuqiang, Chang, Yannan, Sun, Xiao, Wang, Guichang, Ji, Chen, Pan, Changwei, Zhang, Jiujun, Gao, Qingyu

“…Water and its dissociated species at the solid‒liquid interface play critical roles in catalytic science; e.g., functions of oxygen species from water…”
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Comparison of survival prediction values of different scoring models for patients undergoing transjugular intrahepatic portal shunt: A multicenter retrospective study by Liu, Yuyi, Mu, Zhiyong, Xiong, Wei, Hu, Hong, Liu, Aimin, An, Xuan, Xu, Yuqiang, Yu, Haohong, Wang, Jinneng, Wang, Jun, Xiao, Xiao, Chen, Dongfeng, Wen, Liangzhi

“…Aim The aim of this study is to compare the prognostic values of the Child–Pugh, integrated model for end‐stage liver disease (iMELD), albumin–bilirubin…”
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The quantitative description of gas-cut degree in deepwater drilling by XU, Yuqiang, GUAN, Zhichuan, ZHANG, Huizeng, ZHANG, Hongning

“…Through the analysis of gas-cut features in deepwater drilling and shortages of existing gas-cut detection methods, the feasibility of early detection of gas…”
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Mechanical properties and nonisothermal crystallization of polyamide 6/carbon fiber composites toughened by maleated elastomers by Li, Yi, Xu, Jinting, Wei, Zhiyong, Xu, Yuqiang, Song, Ping, Chen, Guangyi, Sang, Lin, Chang, Ying, Liang, Jicai

“…Polyamide 6/carbon fiber (PA6/CF) composites toughened with maleated elastomers were prepared by melt blending using twin‐screw extruder followed by injection…”
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Research on circulating heat recovery law of single horizontal well for hot dry rock geothermal resources by Liu, Yongwang, Li, Kun, Guan, Zhichuan, Lin, Guojun, Xu, Yuqiang

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