Results 11 to 20 of about 905,932 (309)
Modeling Lost-Circulation into Fractured Formation in Rock Drilling Operations
Drilling Technology, 2021 Loss of circulation while drilling is a challenging problem that may interrupt drilling operations, reduce efficiency, and increases cost. When a drilled borehole intercepts conductive faults or fractures, lost circulation manifests as a partial or total
R. Albattat, H. Hoteit
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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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Energy Reports, 2023 Geothermal reservoir rocks have the characteristics of high stress, high hardness and high abrasiveness, which makes the drilling rate low and the drilling cost high, and hinders the application of geothermal energy. Improving drilling efficiency in hard
Jian Huang +6 more
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High Efficiency Drilling Methods for Through Beds Hole in Underground Coal Mine
Meikuang Anquan, 2020 Considering the drilling efficiency problem encountered by crossing holes in underground coal mine, the paper divided roof and floor rock stratum into three grades in order to facilitate the study of technology in underground coal mine: high hard rock (4≤
DOU Xuqian
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Frontiers in Earth Science, 2023 The rock properties are related to the stress environment and dynamic disturbance during construction, and the testing-while-drilling-technique was used for evaluation of rock properties.
Hua Tang +7 more
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Meitan kexue jishu, 2023 With the gradual increase in the depth of coal resource extraction in our country, geological conditions and surrounding rock environment are becoming increasingly complex.
Songyong LIU +4 more
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A study of the application of turbine coring drilling technology to hot dry rock drilling
Shuiwen dizhi gongcheng dizhi, 2021 Exploration of hot dry rock in China has just started. In order to accurately evaluate the amount of hot dry rock geothermal resources in China, high-quality hot dry rock drilling cores are needed.
Xianfeng TAN +5 more
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High Voltage Electric Pulse Drilling: A Study of Variables through Simulation and Experimental Tests
Energies, 2023 With the deepening of drilling depth, the difficulty of drilling engineering increases gradually due to the complex geological conditions. The traditional mechanical drilling method shows the problems of high energy consumption, low efficiency, long ...
Qingyu Zhang +6 more
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Prediction Model of Drilling Performance for Percussive Rock Drilling Tool
Advance in Civil Engineering, 2020 This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate
Dae-ji Kim +6 more
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The rotational motion simulation of AIST small spacecraft prototype based on current values and on a hardware-software stand [PDF]
E3S Web of Conferences, 2023 Improving the quality and volume of drilling is the main condition for advancing the growth of reserves of raw materials of the national economy and industry. Rock-breaking tools are the main and busiest part of drilling equipment.
Khnyryova Ekaterina
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