THERMAL SCIENCE

International Scientific Journal

Long Wang

,

Zhengbo Han

,

Jinduo Wang

,

Liurui Guo

,

Rui Li

ANALYSIS ON THE DYNAMIC CHARACTERISTICS OF STICK-SLIP VIBRATION IN DEEP WELL DRILL STRING SYSTEM

ABSTRACT
In this paper, based on the non-linear mechanics theory of the drill pipe, a mechanical model of stick-slip vibration of the drill pipe has been established by considering the torsional properties of the drill pipe, kinetic energy and the motion law of the bit. The example calculations and sensitivity analysis of the parameters are carried out. The results show that increasing the rotational speed, viscous damping, length of the drill collar and de-creasing the weight of bit have the effect of suppressing the stick-slip vibration.
KEYWORDS
Deep well drilling, Drill string system, Stick-slip vibration, Viscosity reduction efficiency
PAPER SUBMITTED: 2023-07-21
PAPER REVISED: 2023-10-16
PAPER ACCEPTED: 2023-11-13
PUBLISHED ONLINE: 2024-02-18
DOI REFERENCE: https://doi.org/10.2298/TSCI230721040W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 2, PAGES [1161 - 1167]
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Analysis on the dynamic characteristics of stick-slip vibration in deep well drill string system

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence