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Keywords: topsides
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-005
... ABSTRACT The motions of the vessel and the offshore platform topsides are quite complex during lifting operations by the dynamic positioning (DP) crane vessel. To ensure the safety of the operation, it is necessary to maintain the stability of the topside movement to avoid collisions between...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-006
... ABSTRACT With the increasing weight of the topsides of the offshore platform in the developing offshore oil and gas resources, the installation cost and difficulty are greatly increased. It is necessary to reveal the dynamic response characteristics of the floatover operations and accurately...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-119
... ABSTRACT Twin-barge floatover method can utilize two barges to install the topsides and is a promising method for the mega topsides installation. However, the complex connections between the twin barges and topsides pose great difficulties for floatover operation. The installation process...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-125
... ABSTRACT The relative long wave and depth water in South China Sea poses great difficulties to the applications of the main floatover barge HYSY228 for the 10000-ton mega topsides. This study aims at evaluating the workability of the floatover operations in the South China Sea. Numerical...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1108
... Abstract Topsides float-over installation is not new in the industry but the method and technology in executing the float-over operation varies and keep improving to increase project efficiency and cost effectiveness. Each method comes with own technical and operational challenges which...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1107
... Abstract The twin-barge floatover method is promising for the offshore mega topside installation. This study presents the experimental investigation on the twin-barge floatover installation in regular waves. The sea-keeping motion characteristic of the twin-barge floatover system, together...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-049
... ABSTRACT In this study, a series of model tests was carried out to study the characteristics of float-over installation for a semi-submersible platform. Three experimental models, which include a DTV (Deck Transportation Vessel), topsides and a semi-submersible, were considered. In addition...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-597
.... INTRODUCTION A virtual reality (VR) simulation program has been developed to simulate a floatover installation of 13,000Te integrated topsides with a dynamic positioning (DP2) X-Class semisubmersible vessel in a virtual reality environment of South China Sea. There are 23 full mission bridge simulations...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-159
... integrated topsides. This is mainly due to minimum effort in onshore and offshore preparations, complete independence from water depth, no need for bulk and clumsy mooring system, and more importantly, simple, safe and rapid offshore operations. A DP2 class semisubmersible vessel "Hai Yang Shi You 278...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-579
... Application of Dynamic Positioning Float-over Technology to HZ25-8 DPP Topside Installation Nan Xu, (1) Licheng Qin, (1) Yisheng Wang, (2) (1)Offshore Oil Engineering Co. Ltd., Tianjin, China (2)Peking University, Beijing, China ABSTRACT This paper presents the nonlinear time-domain mating...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-692
... = Marine Warranty Surveyor Te = Tonne, or Metric Ton INTRODUCTION Many different floatover technologies have been developed and successfully applied to offshore installations of large integrated topsides onto various fixed and floating substructures since 1983. Several rapid load transfer technologies have...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-160
... was developed in combination with a sophisticated strand-jack lifting system to successfully install 12,700Te large integrated topsides onto a preinstalled eight-legged jacket standing in a water depth of 106m in South China Sea in August, 2014. This innovative floatover method can be divided into two phases...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-058
... ABSTRACT In this study, time-domain mating analyses were carried out to verify safety of float-over operation during various load transfer stages. Water depth of the target field is 130m. Topsides weighing 20,000 ton will be installed on fixed jacket structure by float-over using DTV (Deck...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-086
... ABSTRACT This paper presents the field measurement techniques and the major instruments used in the successful floatover installation of the mega topsides at a water depth of 190 meters in South China Sea on May 23, 2013. The motion measurements of the world's second largest T-Shaped floatover...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-537
... Abstract This paper presents the topsides mating analysis results, including maximum motions and accelerations at mating points such as each leg ends and maximum loads on DSUs, LSF, LMUs, Sway fenders, mooring lines, tether lines, etc., for installation of the topsides structure by means...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-607
.... The DP system is evaluated in the term of maintaining the position and heading during the pre-docking stage. tunnel thruster platform subsea system topsides maximum motion dp time domain analysis coordinate system upstream oil & gas float-over installation huailiang li thruster hz25...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-556
... Abstract This paper details the mooring analysis method and its application in the successful floatover installation of the JZ9–3 CEPD Topsides in shallow water. The main purpose of the mooring analysis is to investigate the mooring line capacity, check the clearance of the mooring lines above...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-128
... learned from the floatover operations are also addressed. mooring system cone upstream oil & gas modeling & simulation barge barge hysy229 operation subsea system topsides mating position floatover technology fender jacket leg sheave south china sea sway fender sheaf mega...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-168
... Abstract LW3-1 CEP Topside plus Deck Support Frame (DSF) total weight reaches 32000 tons, is one of the Largest topsides in the world. The CEP Topside and DSF is fabricated separately due to existence of Deck Separate Unit (DSU). They are combined after fabrication by load transference method...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-411
... Abstract Hui Zhou 25-8 DPP Topsides will be the first floatover installed in China by using DP Class II vessel Hai Yang Shi You 278 or HYSY278. This paper will present the DP floatover method, as well as the advantages and disadvantages of the floatover operation when using the DP system...

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