Analysis on the dynamic characteristics of stick-slip vibration in deep well drill string system

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 sensitivi...

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Bibliographic Details
Published inThermal science Vol. 28; no. 2 Part A; pp. 1161 - 1167
Main Authors Wang, Long, Han, Zhengbo, Wang, Jinduo, Guo, Liurui, Li, Rui
Format Journal Article
LanguageEnglish
Published 2024
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Summary: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.
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI230721040W