... and control floating and moored production systems material performance and applications risers moorings and cable dynamics structural mechanics and foundation subsea technology system integrity assessment Energimyndigheten 10.13039/501100004527 Water Tree - P50156-1 Vetenskapsr...

... better represented by means of an irregular wave modeling. In the way of searching for an irregular wave analysis procedure to be used in the daily design of lazy-wave riser installation analyses, this work proposes an artificial neural network (ANN)-based approach. The proposed model aims to achieve...

..., contributing to increased global renewable energy production [ 2 ]. design of offshore structures floating and moored production systems fluid-structure interaction hydrodynamics ocean energy technology risers mooring dynamics cable dynamics Graphical Abstract Figure 27 11...

... = friction angle σ c = current confining pressure ψ = state parameter gravity installed anchor OMNI-Max anchor keying sand bounding-surface plasticity model moment capacity large deformation analysis geotechnology and foundation engineering risers moorings and cable...

...Fabiano Guimarães This paper presents a fully coupled solution in the time-domain, using the finite-differences method to the system of equations that model the dynamic behavior of the riser, blow-out preventer (BOP), and casing strings, when connected for well drilling/completion—the model...

...Carlos Terencio Pires Bomfimsilva; Theodoro Antoun Netto Free-standing hybrid risers (FSHR) are well established in deepwater field developments in the oil and gas industry. The major advantages foreseen for the FSHR are the possibility of safely anticipating production and requiring significantly...

... wave energy converter mooring design field test fully-coupled structure-mooring line dynamic model anchor movement fatigue damage extreme mooring tension dynamics of structures ocean energy technology risers moorings and cable dynamics U.S. Department of Energy 10.13039/100000015...

... force coefficients, both available from previous analyses employing the WAMIT hydrodynamic radiation/diffraction analysis program [ 27 ]. The wind and current forces are calculated from aerodynamic and hydrodynamic coefficients respectively, evaluated by wind tunnel tests. The risers...

... 04 2022 19 04 2022 17 05 2022 offshore pipelines pipeline technology risers moorings and cable dynamics vortex-induced vibration Long slender cylindrical structures subject to a sustained fluid flow, such as wind loading on on-land structures, or current loading...

...Decao Yin Deepwater steel lazy wave risers (SLWR) subject to vessel motion will be exposed to time-varying oscillatory flow, vortices could be generated and the cyclic vortex-shedding force causes the structure vibrate, such fluid–structure interaction is called vortex-induced vibrations (VIV...

.... The assessment in both locations is performed for two structural models: an idealized stress spectrum for a generic fatigue hot-spot and a steel lazy wave riser (SLWR) connected to a floating production storage and offloading (FPSO). Fatigue life is estimated using the S–N curve approach. Results show...

...Elvis Jhoarsy Osorio Santander; Bianca de Carvalho Pinheiro; Carlos Magluta; Ney Roitman In the development of oil and gas fields, subsea pipes are used in various applications, like pipelines and risers. During operation, risers can be subjected to accidents, such as collisions with other risers...

... 2021 NodeNet LengthNet deep learning slender structure Free-Hanging Lazy-Wave risers moorings and cable dynamics Slender marine structures are characterized by having one of its three dimensions much longer than the other two. Mooring lines, umbilicals, rigid, and flexible pipes...

... of Inclined Cables ,” J. Struct. Eng. , 112 ( 1 ), pp. 139 – 148 . 10.1061/(ASCE)0733-9445(1986)112:1(139) [6] Chatjigeorgiou , I. K. , 2008 , “ A Finite Differences Formulation for the Linear and Nonlinear Dynamics of 2D Catenary Risers ,” Ocean Eng. , 35 ( 7 ), pp. 616 – 636 . 10.1016...

... computational mechanics and design risers moorings and cable dynamics Wires, cables, and ropes are widely used in industry. In the offshore maritime segment, they are used in areas of application ranging from anchor lines, fishing gear, lifting- and towing operations, and seismic surveys. Mathematical...

...Sang Woo Kim; Svein Sævik; Jie Wu; Bernt Johan Leira As the development of offshore oil and gas continues to move into deeper waters, the risers connecting the seabed infrastructure to the offshore platform are getting longer. This means that vortex-induced vibration (VIV) may occur at different...

... of the FPS with its mooring lines and risers. Then, it automatically evaluates equivalent six degrees-of-freedom (6DOF) stiffness matrices and force vectors representing the whole array of lines. Finally, these matrices/vectors are transferred to the dynamic analysis, solving the global 6DOF equations...

... and reliability risers moorings and cable dynamics In the design of floating production units and their mooring and production lines, it is generally understood that responses are nonlinearly related to the applied environmental loads. Second-order hydrodynamic loads play an important role...

...Decao Yin; Halvor Lie; Jie Wu Exploration of oil and gas in deep and ultra-deepwater under harsh weather condition is challenging. A steel lazy wave riser (SLWR) is considered to be a cost-effective alternative to get the gas or oil flow up to the platform under these conditions. The staggered...

... equation is used to assess the dynamic stability of a top-tensioned riser (TTR) in order to prevent the parametric resonance which leads to detrimental effects on structural integrity. The objectives of this paper are to (i) study a Mathieu stability diagram and its coefficients for an assessment...