Criticality of bifurcation in the tuned axial–torsional rotary drilling model
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-017-3859-5
Abstract: We study the bifurcation characteristics of a lumped-parameter model of rotary drilling with 1:1 internal resonance between the axial and the torsional modes which leads to the largest stability thresholds. For this special case, the… read more here.
Keywords: rotary drilling; axial torsional; model; bifurcation ... See more keywords
Properties of Drillstring Vibration Absorber for Rotary Drilling Rig
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal for Science and Engineering"
DOI: 10.1007/s13369-020-04562-y
Abstract: During drilling into hard rocks, the vibration of telescopic drillstring for the rotary drilling rig becomes more severe, which not only leads to the fracture of drillstring, but also reduces the rock-breaking efficiency, the service… read more here.
Keywords: rig; drilling rig; rotary drilling; vibration ... See more keywords
Working pose measurement and quality evaluation of rotary drilling rig based on laser tracker
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DOI: 10.1016/j.ijleo.2019.04.137
Abstract: Abstract Rotary drilling rig is a large-scale construction machinery. It is of great significance to detect the on-line state of the drilling stem, especially the drilling pose. Optical pose measurement is a novel and effective… read more here.
Keywords: rotary drilling; pose measurement; based laser; drilling ... See more keywords
Experimental study and mechanism analysis of the motion states of bottom hole assembly during rotary drilling
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2020.107859
Abstract: Abstract Lateral vibration of bottom hole assembly (BHA) severely affects the drilling efficiencies of downhole tools and even leads to downhole accidents. To further study the lateral motion states of BHA during rotary drilling, a… read more here.
Keywords: motion; mechanism; rotary drilling; lateral vibration ... See more keywords