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Liu, Qingyou
- Dynamic Analysis of Soft Hang-Off Riser in Deep Water, Coupling the Vibration of Lateral and Longitudinal Directions
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Authors
Affiliations
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Sichuan, Chengdu 610500, CN
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Sichuan, Chengdu 610500, CN
Source
Current Science, Vol 116, No 9 (2019), Pagination: 1533-1543Abstract
A dynamic analysis model of soft hang-off riser in deep water is developed to analyse the mechanical behaviour of a drilling riser. In this model, the riser is suspended by the tensioner at one end and is free at the other end. The movement of the riser can be considered as a process coupling the vibration of lateral and longitudinal directions. The model is studied using finite element method and verified by the results of ABAQUS and a similar experiment. The riser deformation, bending moment and longitudinal vibration in a well from the South China Sea are analysed and influences of lower marine riser package weight, evacuation and current velocities, desired track of the drilling platform, and length of the hang-off drilling riser on drilling riser deformation are discussed. The results are of significant importance for the practical operation of soft hang-off drilling riser during evacuation.Keywords
Deep Water, Drilling Riser, Dynamic Analysis, Soft Hang-Off.Full Text
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