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Zhang Youjun

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Publication

Featured researches published by Zhang Youjun.

Archive | 2004

Superpressure hydraulic control reversing slide valve

Hu Qiangfa; Zhang Kaisheng; Zhang Youjun

Archive | 2015

Drilling pressure pushing pressurizer

Hu Qiangfa; Gai Zhiliang; Zhang Youjun; Yu Dongbing; Zhang Yan; Zhu Feng

Archive | 2017

Pressing tool of concave pit type female connector manages in succession

Zhao Jin; Zhu Feng; Hu Qiangfa; Ge Zhiliang; Zhang Youjun; Chen Zhi

Archive | 2017

Radial well drilling method for solving difficult mining problem of thin interbed

Hu Qiangfa; Zhang Youjun; Chen Zhi; Zhang Yan; Yu Dongbing; Zhu Feng

Archive | 2017

Tool suite for tight reservoir radial drilling

Hu Qiangfa; Chen Zhi; Zhang Youjun; Yu Dongbing; Zhang Yan; Ge Zhiliang

Archive | 2016

Abrasive perforating unblocking method and device for coiled tubing

Zhu Feng; Gai Zhiliang; Hu Qiangfa; Chen Zhi; Xin Yongan; Zhang Youjun

Archive | 2016

Mechanical type weight on bit pushes away with ware

Zhang Youjun; Zhang Yan; Chen Zhi; Hu Qiangfa; Yu Dongbing; Zhao Jin

Archive | 2016

Speed-limited rotary cutting tool of coiled tubing abrasive water jetting

Hu Qiangfa; Zhu Feng; Gai Zhiliang; Chen Zhi; Zhang Youjun; Xin Yongan; Lyu Weiping

Archive | 2016

Rotary outlet device of guide device for drilling radial horizontal holes

Chen Zhi; Zhang Youjun; Hu Qiangfa; Zhang Yan; Zhu Feng; Yu Dongbing

Archive | 2015

Casing pipe gauge cutter

Hu Qiangfa; Fu Yue; Chen Zhi; Zhang Youjun; Lyu Weiping; Zhu Feng

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Collaboration

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