Design of Double Motor Power Head of High Power Deep Hole Directional Drilling Rig by ZHANG Rui

Subjects: “…directional drilling rig…”
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TORQUE AND DRAG MEASUREMENT: A COMPARISON BETWEEN CONVENTIONAL, SLIM HOLE AND CASING DRILLING METHODS IN A DEVIATED WELL by Davood Zivar, Ehsan Jafari Dastgerdi, Mohammadsadegh Momeni, Soroush Salmanpour

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Well wall water leakage control technology of vertical well drilling method in coal mines based on grouting of ground directional drilling by Xuesong WANG, Hua CHENG, Chuanxin RONG, Zhishu YAO, Dayou YU

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A supervised machine learning model to select a cost-effective directional drilling tool by Muhammad Nour, Said K. Elsayed, Omar Mahmoud

Subjects: “…Directional drilling…”
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Research on digital platform technology of directional drilling in coal mine by Qiang FAN, Youzhen ZHANG, Long CHEN, Guo CHEN, Dongdong YANG

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Planning, 3D Modelling and Anti-Collision Data Comparison of Directional Wells by Bálint Vojtech, Kotula Miroslav

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An Estimation of Required Rotational Torque to Operate Horizontal Directional Drilling Using Rock Engineering Systems by Hadi Fattahi

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Surface settlement induced by horizontal directional drilling by Asif Ahmed, Md Azijul Islam, Md Zahangir Alam, Hashmi S. Quazi

Subjects: “…Horizontal directional drilling (HDD)…”
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Numerical simulation analysis of effect of borehole gas extraction under fluid‐structure interaction by Lin Wang, Ziyao Yang, Xiangjun Chen, Shuailong Feng

Subjects: “…directional drilling…”
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Experimental project and prevention and control technology of Ordovician limestone water disaster in Tangjiahui Coal Mine by GAO Yingui, KONG Wanjun, AN Shikai, XUE Xianming, ZHENG Liugen, CHANG Chenglin, JIANG Chunlu, GUO Wei, LEI Feng, WANG Gang, YANG Chengchao

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Study on gas extraction from parabolic high level drilling during the initial mining period of fully mechanized caving face by LIU Qingbao1, CHEN Long2, GONG Xuanping2, YU Rui3, CHENG Xiaoyu2, DING Jianxun2

Subjects: “…high-strength fully mechanized caving face; initial mining period; low-level gas extraction; gas extraction trajectory; fracture evolution; high-level directional drilling; parabolic high-level directional drilling…”
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Research on trajectory control of dual-power composite directional drilling in underground coal mine by LI Quanxin, CHU Zhiwei, XU Chao, YANG Dongdong

Subjects: “…composite directional drilling in coal mine; sliding directional drilling; drilling trajectory control; sliding deflection; rotary angle holding; structural bend angle of screw motor; weight on bit; borehole diameter expansion rate…”
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Seepage protection of irrigation canals using horizontal directional drilling by Aleksandr Meneylyuk, Anatoliy Petrovskiy, Aleksey Nikiforov, Aleksandr Borisov

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Safety assessment method for exposed crossing pipelines caused by river scouring by Chaowei HUANG, Yexin LUO, Song WANG

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Technology of Directional Drilling Accident Treatment by Reverse Wire Salvage in Underground Coal Mine by LI Shuaishuai, ZHAO Jianguo, LIU Fei, CHU Zhiwei

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Incident during construction of an underwater passage by directional drilling by Rustyam R. Khasanov, Andrey E. Nastavshev

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Mine-used electromagnetic MWD system and its application by GU Lidong, WANG Kaibin, ZHAO Jiajia

Subjects: “…directional drilling…”
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Problems and Suggestions in the Resistivity Measurement of the External Anti-Corrosion Coating of Buried Steel Pipelines by ZHONG You-chuan, WU Hong-jun, XIE Jun, CHEN Zhen, WANG Chao, LIU Zhen-jun, SHEN Xing, ZHAO Yong, WANG Zhong-xiang, ZHANG Jin-wei

Subjects: “…anti-corrosion coating resistivity|directional drilling crossing pipeline|general method|attenuation method…”
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Well Rehabilitation is a Promising Area for Increasing Hydrocarbon Production by Piatkivskyi Stanislav, Stavychnyi Yevhen, Femiak Yaroslav, Tershak Bohdan, Ahafonov Danyil, Kovbasiuk Mykhailo

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Research and application of near-horizontal directional coring technology and supporting drilling tools by Zujie ZOU

Subjects: “…directional drilling tool assembly…”
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