Fig.7 |
Offloading operation suspension time in environmental condition off Borneo North |
Fig.8 |
Offloading operation suspension time in environmental conditions off the Pearl River Basin |
Fig.9 |
Offloading operation suspension time in environmental conditions in the Northern North Sea |
5. CONCLUSION
The authors have developed a simulator which simulates the operation behavior of offshore oil production, storage, and offloading based on discrete event modeling method. The conclusions of this study are summarized as follows.
・Developed simulation methods are effective for design of an overall offshore system.
・An analysis using the method was applied to a real offshore oil field, and its effectiveness was confirmed.
・An elevation of installation of DPS using the method was successfully conducted.
The further study should be focused on optimization of design of the overall offshore system. The authors have developed basic simulation method by which optimization to minimize an evaluation function under plural constraints of equality and inequality in discrete event system[7]. Application to offshore system will be possible in the practical level.
AUTHOR'S BIOGRAPHY
lkuo Yamamoto received the B.E. degree, M. Eng. Sc. degree, Dr. Eng. degree in 1983, 1985, and 1994, respectively, from Kyushu University, Japan.
He has worked as a researcher at R&D Center and research manager at Headquarters of Mitsubishi Heavy Industries, Ltd. Japan since 1985.
His current research activities are in vehicle control, offshore platform control, robot (invention of life-like robotic fish), wave control, discrete event control and its optimization.
Also, he is editorial boards of springer-verlag, London, (Advances in Industrial Control Series) since 2002.
ACKNOWLEDGEMENT
The authors would like to express their sincere gratitude to members of Japan National Oil Corporation for their cooperation. Thanks are also extended to the Nagasaki R&D center and the headquarters of Mitsubishi Heavy Industries, Ltd., Japan for their support, and also Prof. Grimble and members of University of Strathclyde, UK, for their assistance of research.
REFERENCES
[1] Ikuo Yamamoto, "Research on the New Generation of Factories in Japan", Lecture note on Fraunhofer IPA Stuttgart Forum, Germany, Frounhofer Textbook No. F25, pp51-66, 1997
[2] lkuo Yamamot, "Discrete event simulation technology and its application", Proc. AIOMA (Artificial Intelligence and Optimization for Marine Applications), Hamburg, Germany, 1998
[3] Ikuo Yamamoto, Masami Matsuura, Hiroaki Hirayama,"Total optimization oil production simulator based on discrete event modeling and control theory, Proc. IFAC MCMC, 2000
[4] lkuo Yamamoto, Masami Matsuura, Youichi Yamaguchi, Katsunori Shimazaki, Akio Tanabe, "Dynamic Positioning System Based on Nonlinear Programming for Offshore Platform", Proc. ISOPE, vol.4, pp632-640, 1997
[5] Ikuo Yamamoto, Masami Matsuura, Hiroaki Hirayama, Norihiko Okamoto, "Dynamic Positioning System of Offshore Platform by Advanced Control", Proc. OMAE2001, OFT-5102, 2001
[6] lkuo Yamamoto, Masaru Ihara, Hiroaki Hirayama, Norihiko Okamoto, Masami Matsuura, Eiichi Kobayashi, "Improvement of position keeping performance and its effect on the operation rate in FPSO tandem offloading", Proc. ISOPE, pp124-131, 2002
[7] lkuo Yamamoto, Yuichi Sasaki, Nobumasa Sadanari, "Real applications of dicrete event simulation", (in Japanese) Textbook of 29th Workshop on Discrete Event Systems, The Society of Instrument and Control Engineers, pp14-19, 2001
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