Research on the Configuration of the Deepwater Steel Lazy-Wave Riser Under Effects of Ocean Currents

WANG Jin-long; DUAN Meng-lan; TIAN Kai

doi:10.3879/j.issn.1000-0887.2014.09.002

Volume 35 Issue 9

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WANG Jin-long, DUAN Meng-lan, TIAN Kai. Research on the Configuration of the Deepwater Steel Lazy-Wave Riser Under Effects of Ocean Currents[J]. Applied Mathematics and Mechanics, 2014, 35(9): 959-968. doi: 10.3879/j.issn.1000-0887.2014.09.002

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Research on the Configuration of the Deepwater Steel Lazy-Wave Riser Under Effects of Ocean Currents

doi: 10.3879/j.issn.1000-0887.2014.09.002

¹Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, P.R.China;²Offshore Oil & Gas Research Center, China University of Petroleum, Beijing 102200, P.R.China;³Engineering Design Institute, CPOE, CNPC, Beijing 100028, P.R.China

Funds: The National Basic Research Program of China (973 Program)(2011CB13702); The National Science and Technology Major Project of China(2011ZX05026-003-02)

Received Date: 2014-02-20
Rev Recd Date: 2014-07-03
Publish Date: 2014-09-15

Abstract

Abstract

As a kind of improved SCR, the steel lazy-wave riser (SLWR) gained more and more application in the development of deepwater oil and gas field. The configuration of the SLWR is of great significance in its design process. Under ocean current, the configuration and mechanical parameters of the SLWR 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 SLWR 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 SLWR. Results show that the axial tension force at the touchdown point of the SLWR increases distinctly with the rise of the ocean current velocity, which deserves full consideration in the configuration design of the SLWR. The proposed model makes an important reference for the performance analysis of the deepwater SLWR.
- steel lazy-wave riser (SLWR),
- configuration,
- nonlinear large deformation beam theory,
- ocean current

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References(16)

References

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