Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather

Hejun Geng; Jiawei Lu; Deling Wang; Jie Wang

doi:doi:10.11648/j.ajtte.20210601.13

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Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather

Hejun Geng, Jiawei Lu, Deling Wang, Jie Wang

Published in American Journal of Traffic and Transportation Engineering (Volume 6, Issue 1)

Received: 5 March 2021 Accepted: 17 March 2021 Published: 26 March 2021

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Abstract

With the wide application of cylindrical FPSO (Floating Production Storage and Offloading, FPSO), more and more people pay attention to its operational safety. To study and explore the safety of cylindrical FPSO offloading operation under extreme weather, it is necessary to conduct the simulation of whole operation process in such conditions. At first, the programming models are formulated for the cylindrical FPSO, shuttle tanker and tugs; then, based on the modelling, the responses of the cylindrical FPSO are simulated during offloading operation under various conditions, combined with Delphin Method and relevant theory. The most unfavorable load state and ultimate wind speed on unfavorable wind direction are explored through three stages: 1. changing the loading status of shuttle tanker and cylindrical FPSO; 2. changing the relative bearing of wind; 3. changing the wind speed. The results showed that when the offloading state is FPSO half-load & tanker half-load, it is the worst state to control the offloading system and the limit wind speed in the simulation is: cross wind ≤20 knots.By analyzing the motion response of cylindrical FPSO which is assisted by two tugs, a relatively objective and reasonable solution is obtained, which provides a beneficial reference for the future cylindrical FPSO offloading operation under the extreme weather conditions.

Published in	American Journal of Traffic and Transportation Engineering (Volume 6, Issue 1)
DOI	10.11648/j.ajtte.20210601.13
Page(s)	22-33
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Cylindrical FPSO, Extreme Weather, Motion Response, Offloading Operation

References

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[2]	Liu, B. “Adaptablity analysis of cylindriacal FWPSO under environmental conditions in the South China Sea.” in China Offshore Oil and Gas 2019, 31 (4), pp. 154-158. http://dx.doi.org/10.11935/j.jssn.1673-1506.2019.04.020.
[3]	William B. Lamport; Per M. Josefsson. “The next generation of round fit-for-purpose hull form FPSOs offers advantages over traditional ship-shaped hull forms.” in DeepGulf Conference 2008, 12.
[4]	Wu, J. M. “Distinguishing Feature and Existing Circumstances of FPSO.” in SHIP ENGINEERING 2012, 34 (2), pp. 1-4+102. http://dx.doi.org/10.13788/j.cnki.cbgc.2012.s2.025
[5]	C. L. Siow, J. Koto, H. Yasukawa, A. et al. “Wave induce motion of round shaped FPSO.” in Journal of Subsea and Offshore 2015, 03 (01), pp. 9-17.
[6]	Siow, C.; Koto, Jaswar; Yasukawa, et al. “Mooring Effect on Wave Frequency Response of Round Shape FPSO.” In Jurnal Teknologi (Sciences & Engineering) 2015, 74 (5), pp. 59-68. http://dx.doi.org/10.11113/jt.v74.4642
[7]	Marcos Cueva; Fernando Faria.et al. “Model tests and simulations on circular shaped FPSO with drytree solutions.”in SNAME 16th Offshore Symposium. 2010.
[8]	Wang F. “Study on key problems of floating manufacture the cylinder deep water offshore oil platform”. in Jiangsu University, Zhenjiang, China, 2013.
[9]	Tong B.; Ji, X. J.; Wang, H. et al. “Study on damping performances of damping structures of cylindrical FPSO.” in The Ocean Engineering 2018, 36 (5), pp. 22-29. http://dx.doi.org/10.16483/j.issn.1005-9865.2018.05.003
[10]	Ma, X. Y. “Investigation on the hydrodynamic characteristics of round shaped FPSO induced by freak wave.” in Dalian University of Technology, Dalian, China, 2017.
[11]	Ji, X. J.; Li, Y.; Tang, Y. G.; Tong, B. “Viscous damping effect and vortex shedding performance of the novel anti-motion structures on a cylindrical FPSO.” in Ocean Engineering 2019, 190 (C), 106430, ISSN pp.0029-8018. http://dx.doi.org/10.1016/j.oceaneng.2019.106430
[12]	Afriana R. “Coupled dynamic analysis of cylindrical FPSO, moorings and riser based on numerical simulation [D]” in University of Stavanger, Norway, 2011.
[13]	Jiang M, Li D, Wang Z, et al. “Hydrodynamic Study on the Damping Characteristics of Cylindrical FPSO With the Heave Plate” in ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers Digital Collection, 2020.
[14]	Vidic-Perunovic J, Lee L, Glomnes E B, et al. “Ultra-deepwater production system: model test study of cylindrical FPSO in GoM hurricane conditions” in Offshore technology conference. Offshore Technology Conference, 2017.
[15]	Han K W, Yusof A F M, Julkipli A M H, et al. “NUMERICAL SIMULATION ON MOTION OF SEVEN CYLINDRICAL FPSO IN DIFFERENT LOADING CONDITIONS”. in Journal of Marine Science, Engineering & Technology. JMSET 2019, Vol 2. Webpage: https://jmset.rina-imarest-mjbsc.org
[16]	BV. NI 493 Guidance Note "Classification of Mooring Systems for Permanent Offshore Units". 2008.

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APA Style

Hejun Geng, Jiawei Lu, Deling Wang, Jie Wang. (2021). Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather. American Journal of Traffic and Transportation Engineering, 6(1), 22-33. https://doi.org/10.11648/j.ajtte.20210601.13

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ACS Style

Hejun Geng; Jiawei Lu; Deling Wang; Jie Wang. Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather. Am. J. Traffic Transp. Eng. 2021, 6(1), 22-33. doi: 10.11648/j.ajtte.20210601.13

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AMA Style

Hejun Geng, Jiawei Lu, Deling Wang, Jie Wang. Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather. Am J Traffic Transp Eng. 2021;6(1):22-33. doi: 10.11648/j.ajtte.20210601.13

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@article{10.11648/j.ajtte.20210601.13,
  author = {Hejun Geng and Jiawei Lu and Deling Wang and Jie Wang},
  title = {Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather},
  journal = {American Journal of Traffic and Transportation Engineering},
  volume = {6},
  number = {1},
  pages = {22-33},
  doi = {10.11648/j.ajtte.20210601.13},
  url = {https://doi.org/10.11648/j.ajtte.20210601.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20210601.13},
  abstract = {With the wide application of cylindrical FPSO (Floating Production Storage and Offloading, FPSO), more and more people pay attention to its operational safety. To study and explore the safety of cylindrical FPSO offloading operation under extreme weather, it is necessary to conduct the simulation of whole operation process in such conditions. At first, the programming models are formulated for the cylindrical FPSO, shuttle tanker and tugs; then, based on the modelling, the responses of the cylindrical FPSO are simulated during offloading operation under various conditions, combined with Delphin Method and relevant theory. The most unfavorable load state and ultimate wind speed on unfavorable wind direction are explored through three stages: 1. changing the loading status of shuttle tanker and cylindrical FPSO; 2. changing the relative bearing of wind; 3. changing the wind speed. The results showed that when the offloading state is FPSO half-load & tanker half-load, it is the worst state to control the offloading system and the limit wind speed in the simulation is: cross wind ≤20 knots.By analyzing the motion response of cylindrical FPSO which is assisted by two tugs, a relatively objective and reasonable solution is obtained, which provides a beneficial reference for the future cylindrical FPSO offloading operation under the extreme weather conditions.},
 year = {2021}
}

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TY  - JOUR
T1  - Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather
AU  - Hejun Geng
AU  - Jiawei Lu
AU  - Deling Wang
AU  - Jie Wang
Y1  - 2021/03/26
PY  - 2021
N1  - https://doi.org/10.11648/j.ajtte.20210601.13
DO  - 10.11648/j.ajtte.20210601.13
T2  - American Journal of Traffic and Transportation Engineering
JF  - American Journal of Traffic and Transportation Engineering
JO  - American Journal of Traffic and Transportation Engineering
SP  - 22
EP  - 33
PB  - Science Publishing Group
SN  - 2578-8604
UR  - https://doi.org/10.11648/j.ajtte.20210601.13
AB  - With the wide application of cylindrical FPSO (Floating Production Storage and Offloading, FPSO), more and more people pay attention to its operational safety. To study and explore the safety of cylindrical FPSO offloading operation under extreme weather, it is necessary to conduct the simulation of whole operation process in such conditions. At first, the programming models are formulated for the cylindrical FPSO, shuttle tanker and tugs; then, based on the modelling, the responses of the cylindrical FPSO are simulated during offloading operation under various conditions, combined with Delphin Method and relevant theory. The most unfavorable load state and ultimate wind speed on unfavorable wind direction are explored through three stages: 1. changing the loading status of shuttle tanker and cylindrical FPSO; 2. changing the relative bearing of wind; 3. changing the wind speed. The results showed that when the offloading state is FPSO half-load & tanker half-load, it is the worst state to control the offloading system and the limit wind speed in the simulation is: cross wind ≤20 knots.By analyzing the motion response of cylindrical FPSO which is assisted by two tugs, a relatively objective and reasonable solution is obtained, which provides a beneficial reference for the future cylindrical FPSO offloading operation under the extreme weather conditions.
VL  - 6
IS  - 1
ER  -

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Author Information

Hejun Geng

Merchant Marine College, Shanghai Maritime University, Shanghai, China
Jiawei Lu

Shanye Marine Services Co Ltd, Shenzhen, China
Deling Wang

Merchant Marine College, Shanghai Maritime University, Shanghai, China
Jie Wang

Merchant Marine College, Shanghai Maritime University, Shanghai, China

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Plain Text BibTeX RIS

APA Style

Hejun Geng, Jiawei Lu, Deling Wang, Jie Wang. (2021). Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather. American Journal of Traffic and Transportation Engineering, 6(1), 22-33. https://doi.org/10.11648/j.ajtte.20210601.13

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ACS Style

Hejun Geng; Jiawei Lu; Deling Wang; Jie Wang. Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather. Am. J. Traffic Transp. Eng. 2021, 6(1), 22-33. doi: 10.11648/j.ajtte.20210601.13

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AMA Style

Hejun Geng, Jiawei Lu, Deling Wang, Jie Wang. Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather. Am J Traffic Transp Eng. 2021;6(1):22-33. doi: 10.11648/j.ajtte.20210601.13

Copy | Download

@article{10.11648/j.ajtte.20210601.13,
  author = {Hejun Geng and Jiawei Lu and Deling Wang and Jie Wang},
  title = {Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather},
  journal = {American Journal of Traffic and Transportation Engineering},
  volume = {6},
  number = {1},
  pages = {22-33},
  doi = {10.11648/j.ajtte.20210601.13},
  url = {https://doi.org/10.11648/j.ajtte.20210601.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20210601.13},
  abstract = {With the wide application of cylindrical FPSO (Floating Production Storage and Offloading, FPSO), more and more people pay attention to its operational safety. To study and explore the safety of cylindrical FPSO offloading operation under extreme weather, it is necessary to conduct the simulation of whole operation process in such conditions. At first, the programming models are formulated for the cylindrical FPSO, shuttle tanker and tugs; then, based on the modelling, the responses of the cylindrical FPSO are simulated during offloading operation under various conditions, combined with Delphin Method and relevant theory. The most unfavorable load state and ultimate wind speed on unfavorable wind direction are explored through three stages: 1. changing the loading status of shuttle tanker and cylindrical FPSO; 2. changing the relative bearing of wind; 3. changing the wind speed. The results showed that when the offloading state is FPSO half-load & tanker half-load, it is the worst state to control the offloading system and the limit wind speed in the simulation is: cross wind ≤20 knots.By analyzing the motion response of cylindrical FPSO which is assisted by two tugs, a relatively objective and reasonable solution is obtained, which provides a beneficial reference for the future cylindrical FPSO offloading operation under the extreme weather conditions.},
 year = {2021}
}

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TY  - JOUR
T1  - Study on Offloading Operation of Cylindrical FPSO Under Extreme Weather
AU  - Hejun Geng
AU  - Jiawei Lu
AU  - Deling Wang
AU  - Jie Wang
Y1  - 2021/03/26
PY  - 2021
N1  - https://doi.org/10.11648/j.ajtte.20210601.13
DO  - 10.11648/j.ajtte.20210601.13
T2  - American Journal of Traffic and Transportation Engineering
JF  - American Journal of Traffic and Transportation Engineering
JO  - American Journal of Traffic and Transportation Engineering
SP  - 22
EP  - 33
PB  - Science Publishing Group
SN  - 2578-8604
UR  - https://doi.org/10.11648/j.ajtte.20210601.13
AB  - With the wide application of cylindrical FPSO (Floating Production Storage and Offloading, FPSO), more and more people pay attention to its operational safety. To study and explore the safety of cylindrical FPSO offloading operation under extreme weather, it is necessary to conduct the simulation of whole operation process in such conditions. At first, the programming models are formulated for the cylindrical FPSO, shuttle tanker and tugs; then, based on the modelling, the responses of the cylindrical FPSO are simulated during offloading operation under various conditions, combined with Delphin Method and relevant theory. The most unfavorable load state and ultimate wind speed on unfavorable wind direction are explored through three stages: 1. changing the loading status of shuttle tanker and cylindrical FPSO; 2. changing the relative bearing of wind; 3. changing the wind speed. The results showed that when the offloading state is FPSO half-load & tanker half-load, it is the worst state to control the offloading system and the limit wind speed in the simulation is: cross wind ≤20 knots.By analyzing the motion response of cylindrical FPSO which is assisted by two tugs, a relatively objective and reasonable solution is obtained, which provides a beneficial reference for the future cylindrical FPSO offloading operation under the extreme weather conditions.
VL  - 6
IS  - 1
ER  -

Copy | Download