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1

Combined Percussive-Rotary Drilling to Increase Rate of Penetration and Life of Drill Bit in Drilling Hard Rock Formation

Chunqing Zha,Gonghui Liu,Jun Li,Yumei Li…

Journal:

Chemistry and Technology of Fuels and Oils

Year:

2017

Language:

english

File:

PDF, 707 KB

english, 2017

2

Simulation Research on the Time-Varying Meshing Stiffness and Vibration Response of Micro-Cracks in Gears under Variable Tooth Shape Parameters

Ma, Jianfeng, Liu, Tongtong, Zha, Chunqing, Song, Liuyang

Journal:

Applied Sciences

Year:

2019

File:

PDF, 13.98 MB

2019

3

Simulation Research on the Time-Varying Meshing Stiffness and Vibration Response of Micro-Cracks in Gears under Variable Tooth Shape Parameters

Ma, Jianfeng, Liu, Tongtong, Zha, Chunqing, Song, Liuyang

Journal:

Applied Sciences

Year:

2019

Language:

english

File:

PDF, 13.98 MB

english, 2019

4

Influence of microscale effect on the radial rotation error of aerostatic spindle

Zha, Chunqing, Li, Tianbao, Zhao, You, Chen, Dongju

Journal:

Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology

Year:

2019

Language:

english

File:

PDF, 1.62 MB

english, 2019

5

A new numerical method for evaluating the variation of casing inner diameter after strike‐slip fault sliding during multistage fracturing in shale gas wells

Xi, Yan, Li, Jun, Liu, Gonghui, Zha, Chunqing, Zeng, Xiamao, Zhong, Wenli

Journal:

Energy Science & Engineering

Year:

2019

File:

PDF, 1.81 MB

2019

6

Morphological Analysis of KDP-Crystal Workpiece Surfaces Machined by Ultra-Precision Fly Cutting

Chen, Dongju, Zhang, Shiwei, Liu, Jingfang, Zha, Chunqing, Pan, Ri

Journal:

Year:

2020

File:

PDF, 5.21 MB

2020

7

Fluid-structure interaction on the dynamic characteristics of the hydrostatic spindle in micro-scale

Chen, Dongju, Zhao, You, Zha, Chunqing, Liu, Jingfang

Journal:

Industrial Lubrication and Tribology

Year:

2019

File:

PDF, 1.23 MB

2019

8

A new numerical method for evaluating the variation of casing inner diameter after strike‐slip fault sliding during multistage fracturing in shale gas wells

Xi, Yan, Li, Jun, Liu, Gonghui, Zha, Chunqing, Zeng, Xiamao, Zhong, Wenli

Journal:

Energy Science & Engineering

Year:

2019

Language:

english

File:

PDF, 1.81 MB

english, 2019

9

Tilt Angle of Hydrostatic Spindle Influenced by Microscale Effects

Chen, Dongju, Gao, Xue, Zha, Chunqing, Pan, Ri, Fan, Jinwei

Journal:

Tribology Transactions

Year:

2019

Language:

english

File:

PDF, 1.68 MB

english, 2019

10

Tilt Angle of Hydrostatic Spindle Influenced by Microscale Effects

Chen, Dongju, Gao, Xue, Zha, Chunqing, Pan, Ri, Fan, Jinwei

Journal:

Tribology Transactions

Year:

2019

File:

PDF, 1.68 MB

2019

11

Development and Dynamic Analysis of a Torsional Vibration Damping Tool for PDC Bit

Zha, Chunqing, Dong, Zhiwei, Zhu, Lixin, Chen, Jie, Xi, Yan

Journal:

Chemistry and Technology of Fuels and Oils

Year:

2020

File:

PDF, 2.14 MB

2020

12

Detachable string magnetically controlled capsule endoscopy for detecting high-risk varices in compensated advanced chronic liver disease (CHESS1801): A prospective multicenter study

Wang, Shuai, Huang, Yifei, Hu, Weiling, Mao, Hua, McAlindon, Mark Edward, Liu, Yanna, Yang, Li, Zhang, Chunqing, Xu, Ming, He, Chaohui, Dang, Tong, Wu, Bin, Ji, Dong, Zhang, Liting, Mao, Xiaorong, Zha

Journal:

The Lancet Regional Health - Western Pacific

Year:

2021

File:

PDF, 1.20 MB

2021

13

A new investigation on casing shear deformation during multistage fracturing in shale gas wells based on microseism data and calliper surveys

Yan, Xi, Jun, Li, Chunqing, Zha, Boyun, Guo, Gonghui, Liu

Journal:

Journal of Petroleum Science and Engineering

Year:

2019

File:

PDF, 13.77 MB

2019

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