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- Title
Research on the Configuration of the Deepwater Steel Lazy-Wave Riser Under Effects of Ocean Currents.
- Authors
WANG Jin-long; DUAN Meng-lan; TIAN Kai
- Abstract
As a kind of improved SCR, the steel lazy-wave riser (SLWE) gained more and more application in the development of deepwater oil and gas field. The configuration of the SLWE is of great significance in its design process. Under ocean current, the configuration and mechanical parameters of the SLWE vary a lot. A model of multipoint boundary-value differential equations based on the nonlinear large deformation beam theory was proposed to simulate the responses of the SLWE under ocean current. Numerical program was built to get the approximate solution to the theoretical model and parametric analysis was conducted to study the influences of different ocean currents on the configuration of the SLWE. Eesults show that the axial tension force at the touchdown point of the SLWE increases distinctly with the rise of the ocean current velocity, which deserves full consideration in the configuration design of the SLWE. The proposed model makes an important reference for the performance analysis of the deepwater SLWE.
- Subjects
GAS fields; BOUNDARY value problems; OCEAN currents; VELOCITY; UNDERWATER drilling
- Publication
Applied Mathematics & Mechanics (1000-0887), 2014, Vol 35, Issue 9, p959
- ISSN
1000-0887
- Publication type
Article
- DOI
10.3879/j.issn.1000-0887.2014.09.002