Structural Reliability Based Dynamic Positioning of Turret-Moored FPSOs in Extreme Seas
Joint Authors
Zou, Chuntai
Ding, Fuguang
Dou, Xianghui
Ma, Yanqin
Wang, Yuanhui
Liu, Yanwen
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-07
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
FPSO is widely used during the deep-sea oil and gas exploration operations, for which it is an effective way to keep their position by means of positioning mooring (PM) technology to ensure the long-term reliability of operations, even in extreme seas.
Here, a kind of dynamic positioning (DP) controller in terms of structural reliability is presented for the single-point turret-moored FPSOs.
Firstly, the mathematical model of the moored FPSO in terms of kinematics and dynamics is established.
Secondly, the catenary method is applied to analyze the mooring line dynamics, and mathematical model of one single mooring line is set up based on the catenary equation.
Thereafter, mathematical model for the whole turret mooring system is established.
Thirdly, a structural reliability index is defined to evaluate the breaking strength of each mooring line.
At the same time, control constraints are also considered to design a state feedback controller using the backstepping technique.
Finally, a series of simulation tests are carried out for a certain turret-moored FPSO with eight mooring lines.
It is shown in the simulation results that the moored FPSO can keep its position well in extreme seas.
Besides, the FPSO mooring line tension is reduced effectively to ensure mooring lines safety to a large extent in harsh sea environment.
American Psychological Association (APA)
Wang, Yuanhui& Zou, Chuntai& Ding, Fuguang& Dou, Xianghui& Ma, Yanqin& Liu, Yanwen. 2014. Structural Reliability Based Dynamic Positioning of Turret-Moored FPSOs in Extreme Seas. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-461688
Modern Language Association (MLA)
Wang, Yuanhui…[et al.]. Structural Reliability Based Dynamic Positioning of Turret-Moored FPSOs in Extreme Seas. Mathematical Problems in Engineering No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-461688
American Medical Association (AMA)
Wang, Yuanhui& Zou, Chuntai& Ding, Fuguang& Dou, Xianghui& Ma, Yanqin& Liu, Yanwen. Structural Reliability Based Dynamic Positioning of Turret-Moored FPSOs in Extreme Seas. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-461688
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461688