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Citation:
　Xiangang Ren,Yong Bai and Lusheng Jia.Comparative Analysis of a Jack-up Drilling Unit with Different Leg Systems[J].Journal of Marine Science and Application,2012,(3):368-377.[doi:10.1007/s11804-012-1145-y]
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Comparative Analysis of a Jack-up Drilling Unit with Different Leg Systems

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Title:
Comparative Analysis of a Jack-up Drilling Unit with Different Leg Systems
Author(s):
Xiangang Ren;  Yong Bai and Lusheng Jia
Affilations:
Author(s):
Xiangang Ren;  Yong Bai and Lusheng Jia
1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
Keywords:
jack-up unit;  leg structure form;  reverse K type leg;  X type leg;  mixing type leg;  multi-point constraint (MPC);  offshore oil field
分类号:
-
DOI:
10.1007/s11804-012-1145-y
Abstract:
The jack-up unit is one of the best drilling platforms in offshore oil fields with water depth shallower than 150 meters. As the most pivotal component of the jack-up unit, the leg system can directly affect the global performance of a jack-up unit. Investigation shows that there are three kinds of leg structure forms in the world now: the reverse K, X, and mixing types. In order to clarify the advantage and defects of each one, as well as their effect on the global performance of the jack-up unit, this paper commenced to study performance targets of a deepwater jack-up unit with different leg systems (X type, reverse K type, and mixing type). In this paper a typical leg scantling dimension and identical external loads were selected, detailed finite element snalysis (FEA) models were built to simulate the jack-up unit’s structural behavior, and the multi-point constraint (MPC) element together with the spring element was used to deal with the boundary condition. Finally, the above problems were solved by comparative analysis of their main performance targets (including ultimate static strength, dynamic response, and weight).

References:

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Last Update: 2012-09-06