Results 11 to 20 of about 36,919 (267)
Research on trajectory control of dual-power composite directional drilling in underground coal mine
Gong-kuang zidonghua, 2021 Drilling trajectory control is one of the key technologies to achieve safe and efficient composite directional drilling. Due to the different force conditions of drilling tools in the hole and the composition of the analysis model, the existing ...
LI Quanxin +3 more
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Research on drilling process technology and parameter optimization in soft coal seam [PDF]
E3S Web of Conferences, 2021 Due to the low firmness coefficient of soft coal seam and the influence of formation pressure and in-situ stress, it is easy to cause hole collapse in bedding drilling, resulting in low hole forming rate and insufficient hole forming depth, so the ...
Wu Weizheng
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Research and practice of high speed spiral compound drilling technology in complex weak coal seam
Meikuang Anquan, 2022 In view of the difficult problems of drilling and discharging slag and low hole forming rate in complex weak coal seam of Wangpo Coal Mine, the high speed spiral compound drilling technology is studied, and the performance characteristics of ZDY6000LR ...
LI Yingxi
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The rock breaking capability analyses of sonic drilling
Journal of Low Frequency Noise, Vibration and Active Control, 2021 Sonic drilling technology uses the longitudinal vibration of a drill string to realize fast and effective drilling. By setting the top and bottom boundary conditions of the drill string during drilling, a dynamic model of flexible sonic string percussive
Yonghang Qian +4 more
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A Data-Driven Approach to Predict the ROP of Deep Wells in Fukang Sag
Applied Sciences, 2023 In the deep well drilling process in the Fukang Depression of the Eastern Junggar Basin, rock fracturing issues and low rate of penetration (ROP) have posed significant challenges to drilling efficiency.
Yingjie Wang +5 more
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THE INFLUENCE OF DRILLING FLUID ON THE CORROSION RATE OF TUBULAR MATERIAL [PDF]
Romanian Journal of Petroleum & Gas Technology, 2020 Corrosion is a chemical, biochemical or electrochemical process of degradation on the surface of metals in contact with aggressive agents. Drill pipes are constantly in contact with the drilling fluid which has a corrosive action on its components ...
Gabriela Ioana Stan +2 more
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Improving drilling performance through optimizing controllable drilling parameters
Journal of Petroleum Exploration and Production Technology, 2021 The prediction of the drilling rate of penetration (ROP) is one of the key aspects of drilling optimization due to its significant role in reducing expensive drilling costs.
Ahmed Bani Mustafa +3 more
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Optimization of drilling parameters based on Copula function method for the Chepai area [PDF]
E3S Web of Conferences, 2023 In areas with complex stratigraphic lithology, the relationship between the penetration rate and drilling parameters should be fully considered to optimize the drilling process and improve drilling efficiency.
Liu Yingbiao +5 more
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Molecules, 2022 During drilling in deep shale gas reservoirs, drilling fluid losses, hole wall collapses, and additional problems occur frequently due to the development of natural fractures in the shale formation, resulting in a high number of engineering accidents ...
Xiangwei Kong +7 more
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Rudarsko-geološko-naftni Zbornik, 2021 Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at ...
Shahrokh Khosravimanesh +3 more
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