Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility

Wang Deyang

doi:doi:10.11648/j.ijnrem.20230802.16

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Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility

Wang Deyang

Published in International Journal of Natural Resource Ecology and Management (Volume 8, Issue 2)

Received: 14 April 2023 Accepted: 17 May 2023 Published: 18 May 2023

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Abstract

“Nanhai Shengli” is a floating production storage and offloading unit (FPSO) in the Liuhua 11-1 oil field in the South China Sea. During its service, the FPSO suffered severe broken anchor legs due to the hostile impact of several strong typhoons. In order to ensure the safety of its mooring system, emergency maintenance operations were carried out on 10 mooring anchor legs under the condition of non-release and non-production of FPSO, which was the first time in deep water in China. Its construction is difficult, high risk, weather and FPSO draft time window requirements are high, the use of reasonable technology and construction methods is the key to efficient completion of the operation, such as simulation analysis, reasonable selection of machinery and resources, efficient control of site construction, accurate environmental monitoring, etc. Taking the release and tieback of the mooring system of "Nanhai Shengli" FPSO in Liuhua 11-1 oilfield as an example, various technical difficulties and key points in the process of release and tieback construction are introduced, and the rules are summarized and analyzed. The safe and efficient completion of this construction operation is not only the embodiment of management level, but also the result of daring to innovate and face challenges. It has a typical guiding significance for the maintenance of mooring anchor leg of similar deep-water floating production facilities in China.

Published in	International Journal of Natural Resource Ecology and Management (Volume 8, Issue 2)
DOI	10.11648/j.ijnrem.20230802.16
Page(s)	78-84
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), 2023. Published by Science Publishing Group

Keywords

Floating Production Facilities, Mooring Anchor Leg, Release, Hook up, Innovative Design

References

[1]	LIU Jieming SY/T 10032-2000 Code for Construction and Classification of Single Point Mooring Devices [S]. Beijing: Petroleum Industry Press, 2000.
[2]	Tian Shutang, Wang Zhongmin, Wang Penglai. SY/T 10040-2002 (API 2sk) Recommended practice for design and analysis of Floating structure positioning system [S]. Beijing: Petroleum Industry Press, 2002.
[3]	ABS. Guidance Notes on Life Extension Methodology for Floating Production Installations [S], 2017.
[4]	Design and Analysis of Station keeping Systems for Floating Structures, Third Edition (Includes 2008 Addendum): API RP 2SK (R2015) [S], 2005.
[5]	API RP 2SK-2005, Design and Analysis of Station keeping Systems for Floating Structures [S].
[6]	Jin Xiaojian. Mooring system inspection and maintenance technology of floating production facilities. Beijing: China Machine Press, 2014.
[7]	Yao, A., & Zhang, Qinhe. Review of Offshore Mooring System Life Extension - Challenges and Recommendations [C]. // The Society of Naval Architects and Marine Engineers (SNAME 2019), 20 February, 2019, Houston, Texas, USA.
[8]	H. Yang, W. J. Zhong, Y. Luo, et al. Liuhua 11-1 FPS Dry-dock Upgrade and Life Extension - Mooring System Evaluation and Optimization [C]. //Offshore Technology Conference: Offshore Technology Conference (OTC 2013), 6-9 May, 2013, Houston, Texas, USA. China Offshore Oil Engineering Co., Ltd%China Offshore Oil Engineering Co., Ltd%COTEC Inc%ChinaOffshore Oil Engineering Co., Ltd%ChinaOffshore Oil Engineering Co., Ltd, 2013: 1-9.
[9]	In-service Inspection of Mooring Hardware for Floating Structures - Third Edition: API RP 2I-2008 (R2015) [S], 2008.
[10]	R. E. Melchers. Modeling of Marine Immersion Corrosion for Mild and Low-Alloy Steels -- Part 1: Phenomenological Model [J]. Corrosion: The Journal of Science and Engineering, 2003, 59 (4): 319-334.
[11]	ABS. Guide for Building and Classing Floating Production Installations [S], 2009.
[12]	Unified IACS Requirements Concerning Materials and Welding - W22 Offshore Mooring Chain, Six Edition; IACS (R2019) [S], 2019.
[13]	Specification for Mooring Chain - Sixth Edition: API SPEC 2F-1997 (R2015) [S], 1997.
[14]	Martin G. Brown, Andrew P. Comley, Morten Eriksen. Phase 2 Mooring Integrity JIP-Summary of Findings [C]. //2010 Offshore Technology Conference (OTC 2010). 2010: 1-10.
[15]	Emmanuel Fontaine, Andrew. E. Potts, Robert E Melchers, et al. Investigation of Severe Corrosion of Mooring Chain in West African Waters [C]. //The proceedings of the twenty-second (2012) international offshore and polar engineering conference. vol. 1-4, 2012. 2012: 389-394.
[16]	Tyler de Gier, Anthony Hall, Scott Allan. Microbiologically Influenced Corrosion in Mooring Systems - Field Experience [C]. //2014 Offshore Technology Conference (OTC 2014). 2014: 1-14.
[17]	Crapps J, He H, Baker D, et al. Strength Assessment of Degraded Mooring Chains [C]// 2017 Offshore Technology Conference (OTC 2017). 2017: 1-31.

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APA Style

Wang Deyang. (2023). Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility. International Journal of Natural Resource Ecology and Management, 8(2), 78-84. https://doi.org/10.11648/j.ijnrem.20230802.16

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ACS Style

Wang Deyang. Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility. Int. J. Nat. Resour. Ecol. Manag. 2023, 8(2), 78-84. doi: 10.11648/j.ijnrem.20230802.16

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AMA Style

Wang Deyang. Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility. Int J Nat Resour Ecol Manag. 2023;8(2):78-84. doi: 10.11648/j.ijnrem.20230802.16

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@article{10.11648/j.ijnrem.20230802.16,
  author = {Wang Deyang},
  title = {Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility},
  journal = {International Journal of Natural Resource Ecology and Management},
  volume = {8},
  number = {2},
  pages = {78-84},
  doi = {10.11648/j.ijnrem.20230802.16},
  url = {https://doi.org/10.11648/j.ijnrem.20230802.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijnrem.20230802.16},
  abstract = {“Nanhai Shengli” is a floating production storage and offloading unit (FPSO) in the Liuhua 11-1 oil field in the South China Sea. During its service, the FPSO suffered severe broken anchor legs due to the hostile impact of several strong typhoons. In order to ensure the safety of its mooring system, emergency maintenance operations were carried out on 10 mooring anchor legs under the condition of non-release and non-production of FPSO, which was the first time in deep water in China. Its construction is difficult, high risk, weather and FPSO draft time window requirements are high, the use of reasonable technology and construction methods is the key to efficient completion of the operation, such as simulation analysis, reasonable selection of machinery and resources, efficient control of site construction, accurate environmental monitoring, etc. Taking the release and tieback of the mooring system of "Nanhai Shengli" FPSO in Liuhua 11-1 oilfield as an example, various technical difficulties and key points in the process of release and tieback construction are introduced, and the rules are summarized and analyzed. The safe and efficient completion of this construction operation is not only the embodiment of management level, but also the result of daring to innovate and face challenges. It has a typical guiding significance for the maintenance of mooring anchor leg of similar deep-water floating production facilities in China.},
 year = {2023}
}

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TY  - JOUR
T1  - Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility
AU  - Wang Deyang
Y1  - 2023/05/18
PY  - 2023
N1  - https://doi.org/10.11648/j.ijnrem.20230802.16
DO  - 10.11648/j.ijnrem.20230802.16
T2  - International Journal of Natural Resource Ecology and Management
JF  - International Journal of Natural Resource Ecology and Management
JO  - International Journal of Natural Resource Ecology and Management
SP  - 78
EP  - 84
PB  - Science Publishing Group
SN  - 2575-3061
UR  - https://doi.org/10.11648/j.ijnrem.20230802.16
AB  - “Nanhai Shengli” is a floating production storage and offloading unit (FPSO) in the Liuhua 11-1 oil field in the South China Sea. During its service, the FPSO suffered severe broken anchor legs due to the hostile impact of several strong typhoons. In order to ensure the safety of its mooring system, emergency maintenance operations were carried out on 10 mooring anchor legs under the condition of non-release and non-production of FPSO, which was the first time in deep water in China. Its construction is difficult, high risk, weather and FPSO draft time window requirements are high, the use of reasonable technology and construction methods is the key to efficient completion of the operation, such as simulation analysis, reasonable selection of machinery and resources, efficient control of site construction, accurate environmental monitoring, etc. Taking the release and tieback of the mooring system of "Nanhai Shengli" FPSO in Liuhua 11-1 oilfield as an example, various technical difficulties and key points in the process of release and tieback construction are introduced, and the rules are summarized and analyzed. The safe and efficient completion of this construction operation is not only the embodiment of management level, but also the result of daring to innovate and face challenges. It has a typical guiding significance for the maintenance of mooring anchor leg of similar deep-water floating production facilities in China.
VL  - 8
IS  - 2
ER  -

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Author Information

Wang Deyang

China National Offshore Oil Corporation China Ltd.-Shenzhen, Shenzhen, China

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Plain Text BibTeX RIS

APA Style

Wang Deyang. (2023). Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility. International Journal of Natural Resource Ecology and Management, 8(2), 78-84. https://doi.org/10.11648/j.ijnrem.20230802.16

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ACS Style

Wang Deyang. Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility. Int. J. Nat. Resour. Ecol. Manag. 2023, 8(2), 78-84. doi: 10.11648/j.ijnrem.20230802.16

Copy | Download

AMA Style

Wang Deyang. Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility. Int J Nat Resour Ecol Manag. 2023;8(2):78-84. doi: 10.11648/j.ijnrem.20230802.16

Copy | Download

@article{10.11648/j.ijnrem.20230802.16,
  author = {Wang Deyang},
  title = {Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility},
  journal = {International Journal of Natural Resource Ecology and Management},
  volume = {8},
  number = {2},
  pages = {78-84},
  doi = {10.11648/j.ijnrem.20230802.16},
  url = {https://doi.org/10.11648/j.ijnrem.20230802.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijnrem.20230802.16},
  abstract = {“Nanhai Shengli” is a floating production storage and offloading unit (FPSO) in the Liuhua 11-1 oil field in the South China Sea. During its service, the FPSO suffered severe broken anchor legs due to the hostile impact of several strong typhoons. In order to ensure the safety of its mooring system, emergency maintenance operations were carried out on 10 mooring anchor legs under the condition of non-release and non-production of FPSO, which was the first time in deep water in China. Its construction is difficult, high risk, weather and FPSO draft time window requirements are high, the use of reasonable technology and construction methods is the key to efficient completion of the operation, such as simulation analysis, reasonable selection of machinery and resources, efficient control of site construction, accurate environmental monitoring, etc. Taking the release and tieback of the mooring system of "Nanhai Shengli" FPSO in Liuhua 11-1 oilfield as an example, various technical difficulties and key points in the process of release and tieback construction are introduced, and the rules are summarized and analyzed. The safe and efficient completion of this construction operation is not only the embodiment of management level, but also the result of daring to innovate and face challenges. It has a typical guiding significance for the maintenance of mooring anchor leg of similar deep-water floating production facilities in China.},
 year = {2023}
}

Copy | Download

TY  - JOUR
T1  - Maintenance Technology and Practice of Mooring Anchor Leg in Deepwater Floating Production Facility
AU  - Wang Deyang
Y1  - 2023/05/18
PY  - 2023
N1  - https://doi.org/10.11648/j.ijnrem.20230802.16
DO  - 10.11648/j.ijnrem.20230802.16
T2  - International Journal of Natural Resource Ecology and Management
JF  - International Journal of Natural Resource Ecology and Management
JO  - International Journal of Natural Resource Ecology and Management
SP  - 78
EP  - 84
PB  - Science Publishing Group
SN  - 2575-3061
UR  - https://doi.org/10.11648/j.ijnrem.20230802.16
AB  - “Nanhai Shengli” is a floating production storage and offloading unit (FPSO) in the Liuhua 11-1 oil field in the South China Sea. During its service, the FPSO suffered severe broken anchor legs due to the hostile impact of several strong typhoons. In order to ensure the safety of its mooring system, emergency maintenance operations were carried out on 10 mooring anchor legs under the condition of non-release and non-production of FPSO, which was the first time in deep water in China. Its construction is difficult, high risk, weather and FPSO draft time window requirements are high, the use of reasonable technology and construction methods is the key to efficient completion of the operation, such as simulation analysis, reasonable selection of machinery and resources, efficient control of site construction, accurate environmental monitoring, etc. Taking the release and tieback of the mooring system of "Nanhai Shengli" FPSO in Liuhua 11-1 oilfield as an example, various technical difficulties and key points in the process of release and tieback construction are introduced, and the rules are summarized and analyzed. The safe and efficient completion of this construction operation is not only the embodiment of management level, but also the result of daring to innovate and face challenges. It has a typical guiding significance for the maintenance of mooring anchor leg of similar deep-water floating production facilities in China.
VL  - 8
IS  - 2
ER  -

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