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 +3 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
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
doaj +2 more sources
International Journal of Mechanical Sciences, 2019 A model for drill-string dynamics in arbitrary borehole geometries based on the Cosserat rods theory is presented. The objective of this work is to exploit the capabilities of the Cosserat rods to capture the full range of possible dynamics.
H. Goicoechea, F. Buezas, M. B. Rosales
exaly +2 more sources
Numerical Investigation of the Nonlinear Drill String Dynamics Under Stick–Slip Vibration
VibrationThis paper presents a comprehensive analysis of the influence of rotary table velocity, weight-on-bit, and viscous damping on the drill string stick–slip vibration.
Mohammad Javad Moharrami +2 more
doaj +2 more sources
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
Effect of Annular Gas-Liquid Two-Phase Flow on Dynamic Characteristics of Drill String
Shock and Vibration, 2021 Natural gas hydrate (NGH) is a kind of new type green energy source with giant reserves which has been thought of highly by energy explorers in the world.
Baojin Wang +3 more
doaj +1 more source