Results 31 to 40 of about 875 (185)
A REVIEW DYNAMIC VIBRATION ON DRILL STRING IN DRILLING OPERATION
Sebatik, 2019 For decades, researchers have investigated the phenomenon of vibrations in drilling activities. One of the interesting things is the vibration in the drillstring. Vibration might be caused by Interfere with each other between the drilling mud and drilling string, contact forces between the drillstring and wellbore, and interfere with each other between
Hasan Basri, Afriansyah Afriansyah
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Applied Sciences, 2021 In downhole drilling systems, self-excited torsional vibrations caused by the bit-rock interactions can affect the drilling process and lead to the premature failure of components.
Vincent Kulke +3 more
doaj +1 more source
Component-Based Modeling and Simulation of Nonlinear Drill-String Dynamics [PDF]
, 2019 In this paper, we present a dynamic model for a generic drill-string. The model is developed with the intention for component-based simulation with coupling to external subsystems.
Tengesdal, Njål Kjærnes +5 more
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On resonance regimes of drill string nonlinear dynamics [PDF]
AIP Conference Proceedings, 2017 The paper focuses on investigation of resonance regimes of a drill string nonlinear dynamics under the effect of a variable axial compressive force. The drill string is modelled in the form of a rotating elastic isotropic rod with hinged ends. Deformations of the drill string are assumed to be finite.
Askat Kudaibergenov +2 more
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Minimizing Drill-String-Induced Wellbore Instability [PDF]
, 2023 Objective/Scope: Every year the petroleum industry spends more than an estimated $6 billion in mitigating wellbore instabilities that account for nearly half of the drilling-related NPT (non-productive time).
DAS, SOUKAT KUMAR +3 more
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Study on dynamic characteristics of drill string in deep-water riserless drilling
Advances in Mechanical Engineering, 2023 The cost and security of ocean drilling are directly related to the efficient exploration and development of ocean resources. The riserless drilling system is usually adopted in the ocean drilling. With the consideration of marine environment load, a dynamic analysis model of drill string in deep-water riserless drilling is established. This model aims
Fangfei Huang +4 more
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Analysis of Drill-String Nonlinear Dynamics Using the Lumped-Parameter Method [PDF]
, 2022 This work aims at studying the nonlinear dynamics of drill strings using the lumped-parameter method (LPM). The study is based on the good consistency of the results of the test problem where the model of the longitudinal vibrations of a horizontal drill
Igor V. Andrianov +7 more
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Axial and torsional self-excited vibrations of a distributed drill-string [PDF]
, 2019 We consider a distributed axial-torsional drill-string model with a rate-independent bit-rock interaction law to study the occurrence and non-local characteristics of axial and torsional self-excited vibrations as caused by the regenerative effect.
Aarsnes, Ulf Jakob F. +3 more
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Analysis on Casing Wear Induced by Drill String Whirling during Workover Drill Grinding
Shiyou jixie, 2021 When the drill string rotates in the wellbore, it will whirl, collide with and rub against casing inwall, resulting in casing wear and reducing wellbore safety.
Cao Yinping +3 more
doaj
A Model-Based Intelligent Adjustment Method of Toolface for Bent-Housing Motor
Applied Sciences, 2023 The traditional toolface adjustment of a bent-housing motor is time-consuming and laborious. For the goal of rapid and accurate toolface adjustment, this paper presents an intelligent toolface adjustment method based on the drill string dynamics model ...
Tiansheng Deng +3 more
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