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Coupled analysis of FPSO and CALM buoy offloading system in West Africa


Keng, Y and Sun, L and Kang, Z and Chai, S, Coupled analysis of FPSO and CALM buoy offloading system in West Africa, Proceedings of the 33rd International Conference on Ocean, Offshore and Arctic Engineering, 8-13 June 2014, San Francisco, California, pp. 1-11. (2014) [Refereed Conference Paper]

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Copyright 2014 ASME

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DOI: doi:10.1115/OMAE2014-23118


FPSO and CALM (Catenary Anchor Leg Mooring) buoy offloading systems are being extensively employed in water field of West Africa. In this paper we did some research on the response of FPSO and CALM offloading systems under special environment conditions inWest Africa. It is found that Swell dominate sea state has much larger effects on wave frequency motions of FPSO than responding results introduced by Wind Sea dominate sea state, and squall and current will introduce large horizontal motions of FPSO, such as surge and sway. As for CALM, swell and wind sea mainly affect its heave and roll motions, respectively. Due to its little wind area, CALM does not show great response to Squall which is the extreme environment condition for FPSO though. By comparing the results from OOL (Oil Offloading Line) dynamic analysis and quasi-static analysis, it could be that OOL dynamic effect has little influence on motions of FPSO. But it can bring large changes of responses of CALM because of its small water displacement which indicates coupled analysis of the whole system is necessary Besides, investigations on OOL fatigue have also been done, and the results show that CALM motion plays an important role on fatigue damage and life of OOL under different sea states.

Item Details

Item Type:Refereed Conference Paper
Keywords:Offloading System, Coupled Response Analysis, FPSO, CALM Buoy
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ocean engineering
Objective Division:Energy
Objective Group:Mining and extraction of energy resources
Objective Field:Oil and gas extraction
UTAS Author:Chai, S (Professor Shuhong Chai)
ID Code:93171
Year Published:2014
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-07-14
Last Modified:2015-03-11

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