Results 151 to 160 of about 333 (189)
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A bit–rock interaction model for rotary–percussive drilling
International Journal of Rock Mechanics and Mining Sciences, 2011Abstract Rotary–percussive drilling is considered a promising approach to improve drilling performance in hard rock formations. Different from percussive drilling, it is a hybrid form of drilling, since the weight-on-bit and the angular velocity are still acting as in conventional rotary drilling.
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Rotary and percussive drilling prediction using regression analysis
International Journal of Rock Mechanics and Mining Sciences, 1999[No abstract available]
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Effectual design of hammers for rotary-percussive drilling machines
Journal of Mining Science, 2011Based on the review over theoretical and experimental analyses of influence the drilling machine hammer design exerts on the rock fracture process efficiency, the author draws a conclusion that hammers with curvilinear side surfaces are not an optimal choice as they do not provide a noticeable increase in the impact energy utilization while greatly ...
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Simulation Analysis of Drilling Process in Horizontal Wells with Mechanical Rotary Percussion Tool
Chemistry and Technology of Fuels and Oils, 2022Zhichuan Guan, Guan Zhichuan
exaly
Application of Percussive-Rotary Drilling Technology in Petroleum Drilling
Foreign Language Science and Technology Journal Database Engineering Technology, 2021openaire +1 more source
Rotary-Percussive Deep Drill for Planetary Applications
Earth and Space 2010, 2010Gale Paulsen +10 more
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Reduction of power-intensivity at rotary-percussive drilling
Geo-Technical mechanics, 2020O.Ye. Nazarov +3 more
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