Results 1 to 10 of about 3,333 (268)

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   +4 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   +4 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   +4 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   +4 more sources

Suppression of Drill-String Stick-Slip Vibration [PDF]

open access: yesMATEC Web of Conferences, 2018
We investigate experimentally and numerically suppression of drill-string torsional vibration while drilling by using a sliding mode control. The experiments are conducted on the novel experimental drilling rig developed at the University of Aberdeen [1]
Vaziri Vahid   +2 more
doaj   +4 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   +4 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   +5 more sources

Experimental Study on Axial Impact Mitigating Stick-Slip Vibration with a PDC Bit

open access: yesShock and Vibration, 2021
Stick-slip vibration reduces the drilling rate of penetration, causes early wear of bits, and threatens the safety of downhole tools. Therefore, it is necessary to study suppression methods of stick-slip vibration to achieve efficient and safe drilling ...
Yong Wang   +7 more
doaj   +2 more sources

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   +2 more sources

Dynamic Model and Quantitative Analysis of Stick-Slip Vibration in Horizontal Well

open access: yesShock and Vibration, 2020
Stick-slip is very harmful to the service life of drillstring. The extended Hamilton principle is applied in the paper. Then, finite element method (FEM) is employed to describe the model.
Baojin Wang, Zhongyang Wang, Fushen Ren
doaj   +2 more sources

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