Transportation of tension leg platform （TLP） structures for a long distance has always been associated with the use of a heavy semi-transport vessel. The requirements of this type of vessel are always special, and t...Transportation of tension leg platform （TLP） structures for a long distance has always been associated with the use of a heavy semi-transport vessel. The requirements of this type of vessel are always special, and their availability is limited. To prepare for the future development of South China Sea deepwater projects, the China Offshore Oil Engineering Corporation has recently built a heavy lift transport vessel-Hai Yang Shi You 278. This semi-submersible vessel has a displacement capacity of 50k DWT, and a breath of 42 meters. Understanding the vessel＇s applicability and preparing it for use in future deepwater projects are becoming imminent needs. This paper reviews the current critical issues associated with TLP transportation and performs detailed analysis of the designed TLP during load-out and transportation. The newly built COOEC transportation vessel HYSY 278 was applied to dry transport of the TLP structure from the COOEC fabrication yard in Qingdao to an oil field in South China Sea. The entire process included the load-out of the TLP structure from the landsite of the fabrication yard, the offloading and float-on of the platform from the vessel, the dry transport of the TLP over a long distance, and the final offloading of the platform. Both hydrodynamic and structure analysis were performed to evaluate the behavior of the transport vessel and TLP structure. Special attention was paid to critical areas associated with the use of this new vessel, along with any potential limitations. The results demonstrate that HYSY 278 can effectively be used for transporting the structure with proper arrangement and well-prepared operation. The procedure and details were presented on the basis of the study results. Special attention was also given to discussion on future use based on the results from the analysis.展开更多
Tension leg platform (TLP) has been one of the most favorite deep-water platform concepts for offshore oil and gas field exploration and development. As of now,a total of 24 TLPs have been installed worldwide with 3 m...Tension leg platform (TLP) has been one of the most favorite deep-water platform concepts for offshore oil and gas field exploration and development. As of now,a total of 24 TLPs have been installed worldwide with 3 more to be installed in the near future and 5 more under design. Most of these installations are in the Gulf of Mexico (GoM). Water depths for these TLP installations range from 150 m to 1 600 m. It is highly expected that China will have her first TLP designed,fabricated,and installed in the very near future. In order to satisfy the need for a unified hull structural design practice,this paper presents the design philosophy of a conventional TLP hull structure with emphases on critical structural components design and analysis methodologies.展开更多
基金Supported by the State Key Project "Installation Technical Study for Deepwater Floating Structures" under Grant No.2008ZX05026
文摘Transportation of tension leg platform （TLP） structures for a long distance has always been associated with the use of a heavy semi-transport vessel. The requirements of this type of vessel are always special, and their availability is limited. To prepare for the future development of South China Sea deepwater projects, the China Offshore Oil Engineering Corporation has recently built a heavy lift transport vessel-Hai Yang Shi You 278. This semi-submersible vessel has a displacement capacity of 50k DWT, and a breath of 42 meters. Understanding the vessel＇s applicability and preparing it for use in future deepwater projects are becoming imminent needs. This paper reviews the current critical issues associated with TLP transportation and performs detailed analysis of the designed TLP during load-out and transportation. The newly built COOEC transportation vessel HYSY 278 was applied to dry transport of the TLP structure from the COOEC fabrication yard in Qingdao to an oil field in South China Sea. The entire process included the load-out of the TLP structure from the landsite of the fabrication yard, the offloading and float-on of the platform from the vessel, the dry transport of the TLP over a long distance, and the final offloading of the platform. Both hydrodynamic and structure analysis were performed to evaluate the behavior of the transport vessel and TLP structure. Special attention was paid to critical areas associated with the use of this new vessel, along with any potential limitations. The results demonstrate that HYSY 278 can effectively be used for transporting the structure with proper arrangement and well-prepared operation. The procedure and details were presented on the basis of the study results. Special attention was also given to discussion on future use based on the results from the analysis.
文摘Tension leg platform (TLP) has been one of the most favorite deep-water platform concepts for offshore oil and gas field exploration and development. As of now,a total of 24 TLPs have been installed worldwide with 3 more to be installed in the near future and 5 more under design. Most of these installations are in the Gulf of Mexico (GoM). Water depths for these TLP installations range from 150 m to 1 600 m. It is highly expected that China will have her first TLP designed,fabricated,and installed in the very near future. In order to satisfy the need for a unified hull structural design practice,this paper presents the design philosophy of a conventional TLP hull structure with emphases on critical structural components design and analysis methodologies.
