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1-20 of 29
Keywords: jacket leg
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Proceedings Papers
Failure Modes and Collapse Control of a Jacket Offshore Platform Structure Under Environmental Loads
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-466
... upstream oil & gas jacket platform structure failure mode plasticity development jacket leg platform structure bearing capacity strengthening ductility capacity sub-sea system united states government displacement environmental load collapse analysis brittle failure jacket...
Proceedings Papers
Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1291
... barge upstream oil & gas model test load transfer process load transfer technique subsea system transfer technique proceedings jacket leg ballast system topside topside load artificial intelligence engineering operation load transfer stage impact load jack-down operation...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-159
... to guide the vessel stern for initial smooth docking into the jacket slot. Four sets of sway fenders are mounted on the jacket legs inside the eight-legged jacket slot to absorb impact between jacket legs and vessel sideshells and also to ensure mating cones within capture radius of leg mating units (LMU...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-578
... as guide the design of LMUs, DSUs, the fender system, the gap between fenders and jacket legs, etc. fender barge simulation jacket leg separation beam sea coefficient clearance topsides load subsea system water depth sway fender topside installation stiffness coordinate system...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-579
... the CNOOC278 sway motion and reduce dynamic load in transverse direction. Elastomeric sway fenders are fitted to jacket legs and facing the inner side of jacket slot. Four sway fenders will be fitted to jacket leg A2, A3, B2 & B3. Refer to Wang et al. (2011) for details.The sway fenders are modelled as non...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-160
... and the floatover barge which were stranded for two days inside the jacket slot in extraneous circumstances. The failure events of the first-attempt low-deck floatover technology are briefly reviewed here. Refer to Wang et al. (2014) for details. jacket leg operation lifting tower barge outer leg...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-082
... ABSTRACT Dynamic positioning (DP) float-over installation is a new method for maritime structure installation, which uses a DP vessel to transport the topside of a jacket. When the DP vessel moves between the jacket leg, collision will happen because of environmental forces. To protect DP...
Proceedings Papers
Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-264
... check ratios. the results of th f GL guideline d from the calc the results of th of GL guidelin e and weak s sults. The forc orces subjected e observed on ntial displacem tions are based trength. Altern up to 460 MPa e jacket legs an m can provide . 9 shows the st el. The changes races may also cture...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-181
... Abstract This paper discusses the configuration effect of the symmetrical and asymmetrical shape tubular member in buckling strength on fixed offshore platform. Two kinds of offshore structures are taken to be considered in the analysis. The axial and lateral loads are imposed to jacket legs...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-608
... Abstract This paper describes parametric sensitivity studies of the effect on fender loads and stabbing cone motions by varying jacket leg stiffness, sway fender stiffness, and LMU horizontal stiffness, with ±10% variation on the basis of theoretical values during docking, mating and undocking...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-629
... verified the entire ice rubble blocking process. Thereby, this engineering case could serve as a good guidance and reference for the future design of similar structures in Bohai Sea. wellhead platform ice load analysis tianjin university upstream oil & gas formula jacket leg maximum design...
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-14-119
... Abstract The impact loads on the jacket leg tops is one of the most important design criteria for the float-over installation design which is very sensitive to the jacket stiffness utilized. The deflection at the top of a jacket leg will be influenced by the loads on the other jacket legs...
Proceedings Papers
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-115
... leg capacities are normally the dominant parameter of these design limits. As part of main structure design, jacket legs capacities are not easy to modify as a large number of engineering works are related. The design environmental conditions select for float-over mating analysis are listed in Table 1...
Proceedings Papers
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-150
... floatover barge numerical simulation upstream oil & gas prototype impact load floatover operation simulation test run fender sea state topsides mooring system stiffness model test operation jacket leg mating cone barge A Model Test Study and Its Application for Challenging Floatover...
Proceedings Papers
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-171
... thickness platform ice-resistant platform conical structure vibration jacket leg layout 1 Structural Design for the Ice-Resistant Platform Jinlin Hou, Weidong Shao CNOOC Research Institute Beijing, China ABSTRACT This paper started with a briefly introduction to the development history of the ice...
Proceedings Papers
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-172
... and harsh environment of South China Sea. floatover installation mooring system topsides jacket leg force coefficient stiffness operation subsea system barge local coordinate system coefficient mating mega topsides fender coupling element sensitivity study simulation coordinate...
Proceedings Papers
Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-042
... operation upstream oil & gas maximum load maximum vertical motion tp 13 subsea system barge topside weight installation maximum force clearance stiffness mating simulation jacket leg tp 18 SHWE Topside Installation Meng Yuan,(1) Larry Chen,(1) Frank Ma(2) and Daejun Kim,(2) (1...
Proceedings Papers
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-128
... at the Bottom of Topsides Legs Fig. 1 presents typical LMUs, also known as transition pieces, which are installed offshore prior to loadout at the bottom of the topsides legs while Fig. 2 presents typical LMUs which are installed offshore at the top of the jacket piles, or at the top of the jacket legs in case...
Proceedings Papers
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-292
... and the movement of stabbing cones. The limiting environmental conditions and the dynamic behavior of the barge defined by the mating analysis shall be monitored via an environmental measure system and a motion monitoring system, respectively, during floatover operations. barge jacket leg surge fender...
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