... in Hawaii and various segments in the pipeline. Gref Rocheleau and Dale Jensen (2015) investigated into finite element modeling, design considerations, and repair strategies for large-diameter deep-sea cold water pipelines operating at depths of 670 meters. offshore pipeline water depth submarine...

... ABSTRACT A precise prediction of seabed stability involving the fluid-pipe-soil interaction can lead to significant cost reductions by optimising design. Unlike previous investigations, a three-dimensional numerical model for the wave-induced soil response around an offshore pipeline...

... limit state equation offshore pipeline impact energy pipeline concentric ring reliability theory probability pipeline failure probability drop point material property variation failure probability risk assessment submarine pipeline Risk Analysis of Submarine Pipeline Subjected to Impact...

... instability stability mechanism resistance embedment-to-diameter ratio offshore pipeline critical froude number pipeline submerged pipeline weight silty seabed submerged weight froude number interaction experiment instability upstream oil & gas friction lateral stability sliding...

... interaction were the main focus of attention (e.g., Gao, et al., 2012; Bai et al., 2015). numerical model offshore pipeline mechanism hydrodynamic force instability hydraulic gradient upstream oil & gas flow-induced instability seepage flow maximum upward hydraulic gradient pipeline...

... submarine pipeline absorption calculation result deformation interaction engineering offshore pipeline Analysis of the Impact of Dropped Objects and Trawl Board on Submarine Pipelines Considering Pipe-soil Interaction Yuliang Zhao, Fengyuan Jiang, Sheng Dong, Ri Zhang* College of Engineering, Ocean...

... ABSTRACT The investigation of the wave-induced soil response is extremely significant for sake of submarine pipelines. Unlike conventional approaches, in this paper, a meshfree model for the wave-seabed interactions around an offshore pipeline is established. The pipeline is considered...

... at certain locations, while free spanned at other locations. circular cylinder flow field gap section zebraic case lift coefficient reservoir simulation zdravkovich plane engineering steady flow coefficient offshore pipeline numerical study production control production monitoring...

... channel penetration depth gas pipeline anchor risk and uncertainty assessment longgu channel natural frequency risk management offshore pipeline impact energy submarine pipeline ship probability risk assessment midstream oil & gas frequency aground ocean engineering cnpc research...

... on the failure mechanisms at very shallow penetration, especially within the first 0.2-0.3 m below seafloor. resistance pipe diameter offshore pipeline mechanism embedment depth continuous pipe penetration penetration resistance unit weight full-flow mechanism flow mechanism bearing capacity...

... water level pore pressure response pipeline pore water tide construction uplift force submarine pipeline offshore pipeline water pressure lifting force equation large-diameter pipeline analytical solution upstream oil & gas excess lifting force pore pressure seepage force Tides...

... decades by many researchers. experiment viv frequency isope cylinder response frequency pipe model circular cylinder vibration submarine pipeline span offshore pipeline pipeline span span natural frequency vortex-induced vibration pipe flow velocity sand case diameter...

... instability upstream oil & gas experimental study sand scour pipeline pipeline on-bottom stability displacement froude number on-bottom stability offshore pipeline fr-g correlation submerged weight Experimental Study of Pipeline Stability on Sandy Seabed under the Influence of Ocean Currents...

... platform development mode pipe wall oilfield submarine pipeline hui sun corrosion protection offshore pipeline upstream oil & gas metal loss oil field engineering protection Design and management of Chengdao Oilfield Submarine Pipeline Hui Sun Production Department, Shengli Petroleum...

..., water hammer and external forces which can be formed by wind, current or earthquake. platform midstream oil & gas excitation vibration ice-induced vibration dynamic response equation frequency piping design jacket platform offshore platform offshore pipeline ice vibration local...

.... Studies on local scour below offshore pipeline in waves are rare. Local scour below pipelines subjected to steady currents has been understood relatively well. The experimental observations showed that local scour development below pipeline in steady currents can be classified into two stages (Mao, 1986...

... hummocks and icebergs which are extreme ice formations and present the basic and greatest hazard to the subsea line structure. indentation depth calculation hummock impact offshore pipeline probabilistic simulation model configuration sea bottom probability subsea pipeline route artificial...

...ProceedIngs of the First Pacific/Asia Offshore Mechamcs SymposIUm Seoul, Korea, 24-28 June, 1990 Copynght © 1990 by The InternatIOnal SOCIety of Offshore and Polar Engineers DYNAMIC EFFECTS ON OFFSHORE PIPELINES DUE TO BARGE MOTION DURING DAVIT LIFTING 5 J Lim and J I Park Hl'ulldm ElIglJlPPrllIg...

... in the experiments. INTRODUCTION Increasing activities offshore with regards to the petroleum industry has created a widening interest in research in this field lately. Since it is anticipated that a continued increase of offshore pipelines will be laid in future in several parts of the world, relevant studies...

...-bottom on Hydrodynamic Forces Acting on Offshore Pipelines," China Ocean Engineering, VoU, No.3_ E Xuequan and Li Donghui,(1989), "Influence of Boundary on Flow Field Around a Circular Cylinder," Institute of Mech. Chinese Academy of SCIences, BeIjing Tech. Report (in Chinese). Jothi Shankar, N., Cheong...