Results 21 to 30 of about 875 (185)
Numerical Investigation of the Nonlinear Drill String Dynamics Under Stick–Slip Vibration [PDF]
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
A REVIEW OF DRILL STRING DYNAMICS AND MODELING TECHNIQUES [PDF]
Facta Universitatis, Series: Automatic Control and RoboticsThe complex dynamics of drill strings under various vibration modes during drilling operations present significant challenges to the oil and gas industry due to the high costs associated with oil well drilling. This analytical study aims to provide a comprehensive overview of the most important and widely used mathematical modeling tools and techniques
Benmir, Nora
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Sensing and computational frameworks for improving drill-string dynamics estimation [PDF]
, 2021 International audienceIn this paper, we consider the axial motion of a directional multi-sectional drill-string. The drillstring dynamics are represented by a distributed dynamical model (wave equations) coupled with an ordinary differential equation at ...
Auriol, Jean +2 more
core +1 more source
On physical models in V.I. Gulyayev's three papers on drill string whirling and torsional vibrations
Petroleum, 2020 This paper introduces physical models of drill string whirling and torsional vibrations and analyses the physical models in V.I. Gulyayev's three papers on drill string whirling and torsional vibrations: “V.I. Gulyayev, L.V.
Zifeng Li, Chaoyue Zhang, Guangming Song
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Stick–Slip Vibration Characteristics Study of the Drill String Based on PID Controller
Energies, 2023 In order to address the issue of drill string stick–slip vibration, which leads to drill bit wear and reduces the drilling velocity, we conducted a study on the characteristics of stick–slip vibration using a proportional-integral-derivative (PID ...
Baoyong Yan +3 more
doaj +1 more source
Prediction-Based Control for Mitigation of Axial-Torsional Vibrations in a Distributed Drill-String System [PDF]
, 2022 This article proposes a control strategy to stabilize the axial-torsional dynamics of a distributed drill-string system. An infinite-dimensional model for the vibrational dynamics of the drill string is used as a basis for controller design.
Vossoughi, Gholamreza +3 more
core +1 more source
Energy Reports, 2023 Large amplitude and high frequency WOB (weight on bit) fluctuation will lead to problems such as low rock breaking efficiency, short service life and slow drilling speed. This problem is particularly prominent in hard and difficult to drill formation and
Liu Yongwang +5 more
doaj +1 more source
Effect Of Drill String Rotation On The Dynamic Response Of Drilling Risers [PDF]
International Journal of Applied Mechanics and Engineering, 2015 The effect of the rotation of a drill string on the response of a drilling riser has been studied. A governing equation for the flexural response that incorporates the effect of the drill string rotation is developed from first principles, and the resulting differential equation is found to have a variable coefficient, which is a function of the drill ...
Major, Igoke E. +2 more
openaire +2 more sources
Non-smooth dynamics modeling of drill-string systems in heterogeneous formations [PDF]
, 2022 An extension of the drill-string dynamics model for drilling in heterogeneous rock formations is presented to study the heterogeneity effect on both the axial and torsional ...
Aribowo, Arviandy; id_orcid +3 more
core +4 more sources
Non-Linear Dynamic Analysis of Drill String System with Fluid-Structure Interaction
Applied Sciences, 2021 In this research, the non-linear dynamics of the drill string system model, considering the influence of fluid—structure coupling and the effect of support stiffness, are investigated. Using Galerkin’s method, the equation of motion is discretized into a
Rongpeng Wang +3 more
doaj +1 more source