Results 21 to 30 of about 9,449 (231)
Simulation of the Drill String Vibration Signal System
Shiyou jixie, 2015 To understand the signal transmission processes and rules as well as the structure and components of signals inside the drill string,through establishing signal transmission model,a drill string vibration simulation software has been developed based on ...
宋一晨, 吕苗荣, 陆健
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PASSIVE VIBRATION CONTROL OF PERIODIC DRILL STRING
, 2017 In this dissertation, the stop and pass bands (i.e. the band gaps) characteristics are determined for gyroscopic systems by developing an approach which is compatible with such class of systems which is based on the concept of Bloch wave propagation in periodic structures.
Yaser Alsaffar
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Natural Frequency Analysis of a Stepped Drill String in Vertical Oil Wells Subjected to Coupled Axial–Torsional–Lateral Vibrations [PDF]
EnergiesDrilling oil and gas wells is a complex process that requires a combination of several parameters to dig into the ground. Inappropriate drilling parameter settings and reaction forces can lead to unwanted vibrations, which can negatively impact the drill
Mohamed Zinelabidine Doghmane
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Drill String Vibration Monitoring as an Element of Automatic Control of Drilling
Proceedings of the 5th Workshop for Young Scientists in Computer Science and Software Engineering, 2022 Vladimir Morkun +5 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
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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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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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Use of the energy of parametric oscillations to improve drilling indices [PDF]
, 2018 Purpose. Increase of the efficiency of using energy of parametric oscillations within the assembly of drilling string bottom by means of solving nonlinear-parametric equations of a “bit – drive motor – drilled-out rock” system to improve drilling indices.
Kovalchuk, Yu +2 more
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Dynamic analysis of sonic vibration drilling string with the sampling tool
Alexandria Engineering Journal, 2022 Sonic vibration sampling technology is widely used due to its high sample fidelity, low disturbance to the stratum and environmental protection. The influence of the diameter variation of sonic drill string caused by the sampling tube on the axial ...
Liya Liu +3 more
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Analysis of the Influence of Downhole Drill String Vibration on Wellbore Stability
Machines, 2023 Most studies related to aspects of wellbore stability, such as wellbore breakage, block dropping, and wellbore expansion, revolve around the physicochemical interaction between drilling fluid and surrounding rock, but relevant studies show that drill ...
Yonggang Shan +4 more
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