Natural transverse vibration characteristics of jack-up riser and its applied research
- 10.2991/icmmbe-16.2016.18How to use a DOI?
- jack-up rig, riser, resonance, frequency equation
In order to resolve the resonance problem of jack-up riser with drill string, the frequency equation of natural transverse vibration with compressive axial load and the length of the riser above the seabed as independent variable was derived in this paper. Then the frequency equation was solved by the Newton method, and the accuracy of the frequency calculation method without axial load was analyzed. In addition, a resonant rotating speed table of top-drive system (TDS) was made according to the relationship between rotating speed and frequency. The results show that: the method proposed in this paper is more accurate than the Rayleigh method; equation(22) is available when the length of the riser above the seabed is shorter than 30 meters while axial weight less than 90 tons ; there is a nonlinear relationship between the frequencies of the riser and the length of the riser above the seabed, and the frequencies decrease with the increasing length; under the general working conditions of jack-up , the relationship between the frequencies of the riser and axial compressive load is almost linear, and the frequencies decrease with the increasing axial compressive load; the resonant frequency range of the riser with drill string depends on the length of the riser above the seabed, and the resonant frequency range is extended by the increasing length.
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Fengde Wang AU - Wensheng Xiao AU - Hongyan Wang AU - Junguo Cui AU - Jinsheng Song AU - DingLi Wang PY - 2016/09 DA - 2016/09 TI - Natural transverse vibration characteristics of jack-up riser and its applied research BT - Proceedings of the6th International Conference on Mechatronics, Materials, Biotechnology and Environment (ICMMBE 2016) PB - Atlantis Press SP - 84 EP - 90 SN - 2352-5401 UR - https://doi.org/10.2991/icmmbe-16.2016.18 DO - 10.2991/icmmbe-16.2016.18 ID - Wang2016/09 ER -