Transverse Vibration Analysis of the Riser in Deep Water
Zifeng Li, Peng Wang, Min Zhao, Xuejiao Li
Identifiers and Pagination:Year: 2015
First Page: 38
Last Page: 44
Publisher Id: TOPEJ-8-38
Article History:Received Date: //2015
Revision Received Date: //2015
Acceptance Date: //2015
Electronic publication date: 10/3/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
With high international oil price, the exhaustion of onshore resources and declination of oil and gas production in shallow sea, deep water has become the important succeeding area of worldwide oil and gas. During deepwater oil and gas development, riser must be used to isolate seawater, circulate drilling fluid, and compensate the heaving movements of the string and so on. However, with the operating water depth increasing, the loads of waves and ocean currents on the riser become more complex, leading to extremely high construction risk and funds risk of deep-water operations. In this paper, considering the combined action of inside and outside fluid on the riser, transverse vibration partial differential equation is derived, and solved with finite difference method. Meanwhile, transverse displacement response of the riser acted by outer load is determined, and the shear force, bending moment and bend angle at different locations are solved, then the influence factors of riser transverse vibration are analyzed. The mechanical analysis of marine riser can provide a theoretical guidance for safe and effective drilling work, which is of great significance for the offshore oil and gas development.