Nowadays, flexible risers are widely deployed in various configurations for the production of hydrocarbons in offshore fields. For example, in the self-standing hybrid risers’ applications, a single riser or a set of risers are suspended by a subsurface buoy called “Can”. Then a piece of flexible riser connects the Can to the production platform conveying the hydrocarbon production stream. This work concerns about this jumper, an experiment using a 10 m long model was carried out at the Deep Sea Basin of the National Maritime Research Institute in Japan. The model was made by three concentric unbonded layers: a silicon made inner layer; a crisscross steel wire layer; and a rubber made outer layer. During this experiment, the model was suspended through both ends; one model’s end was fixed and the other end was connected to an oscillator that generates the oscillatory motion in three different directions. In addition, a positive displacement pump injected fresh water into the model. Further, the model was instrumented with two degrees of freedom accelerometers fixed along its length; and a six degrees of freedom force/torque transducer was also installed at one pipe end. In addition, the Deep Sea Basin’s Visual Measurement System tracks and calculates the motion of several measurement stations along the pipe. A parametric analysis was carried out changing the oscillating frequency and internal flow rate. Discussion and results of numerical simulation are also included.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4436-6
PROCEEDINGS PAPER
An Experimental Analysis of a Flexible Riser in Jumper Configuration
Motohiko Murai,
Motohiko Murai
Yokohama National University, Yokohama, Kanagawa, Japan
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Marcio Yamamoto,
Marcio Yamamoto
Yokohama National University, Yokohama, Kanagawa, Japan
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Shotaro Uto,
Shotaro Uto
National Maritime Research Institute, Mitaka, Tokyo, Japan
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Tomo Fujiwara
Tomo Fujiwara
National Maritime Research Institute, Mitaka, Tokyo, Japan
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Motohiko Murai
Yokohama National University, Yokohama, Kanagawa, Japan
Marcio Yamamoto
Yokohama National University, Yokohama, Kanagawa, Japan
Shotaro Uto
National Maritime Research Institute, Mitaka, Tokyo, Japan
Tomo Fujiwara
National Maritime Research Institute, Mitaka, Tokyo, Japan
Paper No:
OMAE2011-49506, pp. 495-502; 8 pages
Published Online:
October 31, 2011
Citation
Murai, M, Yamamoto, M, Uto, S, & Fujiwara, T. "An Experimental Analysis of a Flexible Riser in Jumper Configuration." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 4: Pipeline and Riser Technology. Rotterdam, The Netherlands. June 19–24, 2011. pp. 495-502. ASME. https://doi.org/10.1115/OMAE2011-49506
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