Results 1 to 10 of about 19,639 (187)

The impact of multidirectional excitation on the stick–slip vibration characteristics of a drill string [PDF]

open access: yesScientific Reports
Stick–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   +5 more sources

Stick-slip vibration behaviors of BHA and its control method in highly-deviated wells

open access: yesAlexandria Engineering Journal, 2022
Stick-slip vibration is a common phenomenon met in oil gas drilling, especially in the complex trajectory wells such as highly-deviated wells, it will cause the earlier failure of BHA (bottom hole assembly) and lower drilling efficiency.
Weiji Liu   +3 more
doaj   +3 more sources

Stick–slip vibrations in oil well drillstring: A review [PDF]

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2020
A survey of the literature related to theoretical and experimental studies on stick–slip vibration in oilwell drillstring is carried out in this study. It aims to explain key concepts and present the existing methods for studying this phenomenon.
Liping Tang   +4 more
doaj   +2 more sources

Stick–Slip Vibration Characteristics Study of the Drill String Based on PID Controller

open access: yesEnergies, 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   +3 more sources

Study of the influences of rotary table speed on stick-slip vibration of the drilling system

open access: yesPetroleum, 2015
Stick-slip vibration presents one of the major causes of drilling problems, such as premature tool failures, low drilling efficiency and poor wellbore quality.
Liping Tang   +4 more
doaj   +3 more sources

Stick–slip vibration of a friction damper for energy dissipation [PDF]

open access: yesAdvances in Mechanical Engineering, 2017
This article studies energy dissipation of a friction damper (due to stick–slip vibration) in the context of harmonic excitation. There are numerous applications of such friction dampers in engineering. One particular example is a new kind of under-platform dry friction dampers for aero engines. The model consists of a clamped cross-like beam structure
Bingbing He   +2 more
exaly   +3 more sources

On the stick-slip vibration in the suspension of a freight wagon [PDF]

open access: yesMATEC Web of Conferences, 2017
Damping based on the dry friction is frequently in suspensions of the freight wagons. The paper presents some aspects of vertical vibration of freight wagons. It uses a simple model considering that the vehicle was reduced to a mass suspended on a wheel,
Mazilu Traian, Dinu Vlăduţ Marian
doaj   +2 more sources

Discussion of Stick-Slip Dynamics of 2DOF Sliding Systems Based on Dynamic Vibration Absorbers Analysis

open access: yesLubricants, 2022
In this study, we discussed the occurrence condition stick-slip model based on a 2DOF system, in which a 1DOF system model commonly used in stick-slip analysis was attached on an elastic foundation.
Satoru Maegawa   +2 more
doaj   +3 more sources

The inhibition mechanism of ultrasonic vibration on stick-slip phenomenon of sliding friction pair [PDF]

open access: yesScientific Reports
Frictional vibration often occurs during sliding, commonly referred to as the stick-slip phenomenon. It is more likely to occur in the range of the Stribeck curve, where friction and velocity have negative gradient characteristics.
Lingjie Luo   +6 more
doaj   +2 more sources

Parallel Manipulation Based on Stick-Slip Motion of Vibrating Platform [PDF]

open access: yesRobotics, 2020
The majority of the industrial material handling mechanisms used in the manipulation or assembly of mesoscale objects are slow and require precision programming and tooling, mainly because they are based on sequential robotic pick-n-place operations ...
Mohammad Mayyas
doaj   +2 more sources

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