Results 1 to 10 of about 9,104 (217)
Optimal design and nonlinear dynamic characteristics of titanium /steel drill pipe composite drill string for ultra-deep drilling [PDF]
Scientific Reports, 2023 Titanium drill pipe have promising application prospects in ultra-deep drilling, but the nonlinear dynamic characteristics of composite drill strings are very complex.
Qiang Liu +9 more
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Energies, 2021 The longitudinal vibration of the drill pipe contains considerable energy which can be used to improve the rock-breaking efficiency during drilling. It is very important to the development of drilling speed-up tools to have a comprehensive understanding ...
Yuqiang Xu +2 more
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The impact of multidirectional excitation on the stick–slip vibration characteristics of a drill string [PDF]
Scientific ReportsStick–slip vibration is a common phenomenon in ultra-deep drilling that significantly impacts the failure of both drill bits and drill tools. The most direct and efficacious approach to alleviating the stick–slip vibration of the drill string in the ...
Zhao Hongshan, Wang Wenchang, An Kaixian
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Suppression of Drill-String Stick-Slip Vibration [PDF]
MATEC Web of Conferences, 2018 We investigate experimentally and numerically suppression of drill-string torsional vibration while drilling by using a sliding mode control. The experiments are conducted on the novel experimental drilling rig developed at the University of Aberdeen [1]
Vaziri Vahid +2 more
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Vibration behavior analysis of reamers based on drill string dynamics [PDF]
Scientific ReportsAn integrated drill string-reamer dynamics model incorporating full-wellbore mechanics was established to characterize Reaming While Drilling vibration mechanisms.
Yu Fusheng +4 more
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Measurement and Analysis of Downhole Drill String Vibration Signal [PDF]
Applied Sciences, 2021 Downhole drill string vibration data can provide an effective reference for research drill string vibration during drilling. In this paper, the research group used a storage-type downhole vibration measurement equipment equipped with an orthogonal, three-
Yafeng Li +4 more
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Chaotic Vibration Analysis of the Bottom Rotating Drill String [PDF]
Shock and Vibration, 2014 Drill string vibration is a widely studied topic. This paper developed a real-time measurement system near the drilling bit and extracted the lateral vibration, longitudinal vibration time series of bottom rotating drill string.
Qilong Xue +3 more
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Adaptive Control of Drill String Vibrations [PDF]
Chemical and Petroleum Engineering, 2019 The basic principles and methods of drill string vibration control are studied. The prospects of development of a semiactive vibration damping method are shown. The principle of semiactive vibration damping developed by the authors using the Matlab Simulink graphical programming environment for modeling is studied.
É. A. Petrovskii +2 more
openaire +2 more sources
On “Lump mass torsional vibration model” and helical deformation of drill string
Petroleum, 2021 This paper analyses the physical models in “Kapitaniak M, Hamaneh VV, Chávez JP, Nandakumar K, Wiercigroch M. Unveiling complexity of drill–string vibrations: experiments and modelling. International Journal of Mechanical Sciences 2015; 101–102: 324–327”.
Zifeng Li
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Vibration of Periodic Drill-Strings with Local Sources of Resonance
Vibration, 2021 A new class of drill-strings is proposed for attenuating undesirable vibrations to ensure effective operation. The drill-string is provided with passive periodic inserts, which are integrated with sources of local resonance (LR).
Wael Akl +3 more
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