Dynamics of a distributed drill string system: Characteristic parameters and stability maps [PDF]
Journal of Sound and Vibration, 2018 This paper involves the dynamic (stability) analysis of distributed drill-string systems. A minimal set of parameters characterizing the linearized, axial-torsional dynamics of a distributed drill string coupled through the bit-rock interaction is derived. This is found to correspond to five parameters for a simple drill string and eight parameters for
Ulf Jakob F Aarsnes, Nathan Van De Wouw
exaly +4 more sources
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
doaj +4 more sources
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
doaj +2 more sources
Complex dynamics of drill-strings: Theory and experiments [PDF]
MATEC Web of Conferences, 2018 We investigate complex drill-string dynamics in a downhole drilling where strong nonlinear interactions between various types of vibration take place.
Wiercigroch Marian +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
doaj +3 more sources
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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On dynamic stability of drill strings in a supersonic gas flow
Вестник КазНУ. Серия математика, механика, информатика, 2018 In this work stability of the drill string nonlinear dynamics, complicated by the effect of an external axial load, initial curvature of the drill string, geometric nonlinearity and the influence of a supersonic gas flow as a circulating medium is ...
Askat K. Kudaibergenov, L. A. Khajiyeva
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Non-linear dynamics of a drill-string with uncertain model of the bit–rock interaction [PDF]
International Journal of Non-Linear Mechanics, 2009 The drill-string dynamics is difficult to predict due to the nonlinearities and uncertainties involved in the problem. In this paper a stochastic computational model is proposed to model uncertainties in the bit-rock interaction model. To do so, a new strategy that uses the nonparametric probabilistic approach is developed to take into account model ...
Thiago G Ritto +2 more
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Vibration Characteristics Study of Drill String Based on Rotary-impact Drilling Tool in Horizontal Well [PDF]
Journal of Petroleum Science and Technology, 2021 To address the problems of large drilling friction and low rate of penetration (ROP) in the drilling process of horizontal well, the vibration characteristics research of drill string is conducted on the basis of rotary-impact.
Jialin Tian +3 more
doaj +1 more source
A Novel Mesoscopic Drill Bit Model for Deep Drilling Applications
Modelling, 2023 This paper deals with the development of a novel mesoscopic model of polycrystalline diamond compact (PDC) drill bits that can be implemented in complex drill string models for simulations to analyse the influence of rock inhomogeneities or the impact of
Mohamed Ichaoui +2 more
doaj +1 more source