Results 11 to 20 of about 257 (165)
Application of double pipe directional drilling technology in 313 face of Qinan Mine
Meikuang Anquan, 2021 In view of the problems of large dip angle of coal seam and soft broken coal seam of 32# coal seam in the construction of long borehole along the coal seam in the 313 working face of Qinan Coal Mine, using double power head rig and auxiliary drilling ...
XU Rui, HONG Jianjun, ZHANG Jie
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Design of drilling parameters monitoring system of directional drilling rig in coal mine tunnel
Gong-kuang zidonghua, 2019 In view of problems of deficiencies in real-time display and centralized storage of drilling parameters of full hydraulic directional drilling rig in coal mine tunnel, a drilling parameters monitoring system of directional drilling rig in coal mine ...
FANG Peng
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Research of weight on bit transmission law of ultra-long directional borehole along coal seam
Gong-kuang zidonghua, 2019 In order to further increase directional borehole depth along coal seam and improve drilling efficiency of ultra-long directional borehole, influencing factors of weight on bit(WOB) transmission of ultra-long directional borehole along coal seam were ...
LIU Fei +4 more
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Automated drilling algorithms implementation on a laboratory drilling rig [PDF]
Modeling, Identification and Control, 2020 Considering the state of art technology that exists today and the significant resources that are being invested into the technology of tomorrow, an idea of intelligent and fully automated machineries working on a drilling floor that is capable of ...
Erik Andreas Løken +2 more
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Meikuang Anquan, 2022 According to the shallow sampling depth, inaccurate measurement and control of sampling position, large gas loss and other disadvantages existed in the available sampling technology for measuring gas content in broken soft coal seam, a sampling ...
CHAI Jianlu
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Optimization of the Cost Function in the Drilling of Oil Well Network by Balas Algorithm [PDF]
Iranian Journal of Oil & Gas Science and Technology, 2014 The most costly operation in the oil exploration is the well network drilling. One of the most effective ways to reduce the cost of drilling networks is decreasing the number of the required wells by selecting the optimum situation of the rig placement ...
Bijan Maleki +2 more
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Intelligent electric control system design for mine horizontal directional drilling rig
Gong-kuang zidonghua, 2021 In order to solve the problems of low degree of intelligence, single function and poor safety of electric control system of domestic horizontal directional drilling rigs, an intelligent electric control system for mine horizontal directional drilling rig
LIU Zhu1 +4 more
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Mine-used mud pulse wireless measurement while drilling device and its applicatio
Gong-kuang zidonghua, 2019 For problems of wired while drilling device (MWD) which used central cable drilling rig as signal transmission channel such as complex drilling rig structure, limited mechanical behavior, poor anti-interference performance and so on, a mine-used mud ...
FANG Jun +3 more
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Application of long-distance directional drilling gas drainage technology inQinglong Coal Mine
Gong-kuang zidonghua, 2020 The coal mines in Guizhou Province have complex geological structures, high gas content, and soft coal seams, making gas management difficult. In order to improve gas management level in the area, at the range of 5-205 m forward from Y3 point of the ...
XUE Haiteng +4 more
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工程科学与技术, 2022 In view of the large terrain elevation difference along the Sichuan—Tibet railway, the steep topography of the long and large buried depth tunnel project, extremely poor traffic conditions, and the inability to implement vertical deep hole exploration ...
Zhengxuan XU +6 more
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