Finite element modeling of burst failure in unbonded flexible risers

Cuamatzi-Meléndez, Rubén; Castillo-Hernández, O.; Vázquez-Hernández, A.O.; Albiter, A.; Vaz, Murilo Augusto

doi:10.1016/j.engstruct.2015.01.021

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…The assumptions and calculation results of each model were compared and discussed. Cuamatzi-Melendez et al (2015) considered the contact nonlinearity and physical nonlinearity caused by the contact between the two layers of the internal pressureresistant layer in the numerical model and compared the modified model to various existing theoretical models, demonstrating the importance of the numerical simulation in the analysis of internal pressure resistance. Paumier et al (2010) first introduced the modeling principles and main assumptions for calculating the external pressure collapse of flexible pipes in the straight pipe condition before delving into the model's applicability to the bent pipe condition.…”

Section: Progress Of Theoretical and Simulation Research On The Perfo...mentioning

confidence: 99%

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

Zhao

Gou

et al. 2022

China Ocean Eng

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Offshore oil and gas development plays an important part in the global energy sector. Offshore platforms and flexible pipes are the key equipments in the whole offshore oil and gas development system. Because of the randomness and uncertainty of wave and current loads in the ocean environment, the structural design and mechanical analysis of the marine equipment can be highly complicated. Therefore, this paper reviews the recent works of the theoretical model, numerical simulation, and experimental test in three research areas: hydrodynamic analysis of offshore platforms, structural mechanics analysis of flexible pipe and cable, and monitoring technology of offshore floating structures under marine loads. By analyzing their main research methods and key technical difficulties, this paper provides theoretical basis and technical support for the reliability engineering application of offshore platforms and flexible pipelines. Also, China is relatively backward in the design of marine floating platform, the design, analysis and testing of flexible pipeline and cable, as well as the marine equipment prototype monitoring technology research. Calling for breakthroughs at the earliest possible stage in the above fields, prime research should be focused on and strategic planning should be made to deal with “key areas and stranglehold problems”. It is of great significance for the development of China’s deep-sea energy and resource development of independent technology and on time to achieve the “carbon peak” national strategic objectives.

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Section: Progress Of Theoretical and Simulation Research On The Perfo...mentioning

confidence: 99%

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

Zhao

Gou

et al. 2022

China Ocean Eng

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“…At the same time, the suction anchor foundation is a large structure with the tens of meters height and considerable costs [20,21]. Although there are some studies on subsea manifolds, buoy [22][23][24][25], flexible pipes or risers [26][27][28][29][30][31] and mooring systems [32][33][34][35][36][37], there is no such concept that combines the two parts and keeps manifold suspending in the water and creates a 3D subsea production system. Here, the new subsea manifold is suspended with the buoy, and the flexible pipes may be used to be the mooring systems as well as the transporting oil and gas pipelines.…”

Section: Introductionmentioning

confidence: 99%

The motion response and hydrodynamic performance comparisons of the new subsea suspended manifold with two mooring scenarios

Wang

Chen

et al. 2021

J Braz. Soc. Mech. Sci. Eng.

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The subsea manifold as the hub oil and gas transportation equipment is a critical part for the layout optimization of subsea production system and reducing the number of pipelines. The traditional subsea manifold is fixed on seabed by its foundation, so traditional manifold system is hard to be discarded and recovered although it has many advantages and is applied widely in the deep water development scenario. In this paper, a new subsea suspended manifold concept is proposed to discuss its feasibility by the hydrodynamic performance state in vertical tension and catenary mooring methods. A mathematical model is established to solve the chain tension distribution and displacement of the subsea suspended manifold. Meanwhile, the motion response of the subsea suspended manifold under different influence factors, tension distribution of the mooring chains and the flexible jumpers in two mooring schemes are simulated, respectively, through OrcaFlex software. The research results will provide an important reference for the optimization of the preliminary scenario design of the subsea suspended manifold mooring system.

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Unbonded Flexible Pipe Under Internal Pressure

2017

Advances in Pipes and Pipelines

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The sealing performance of end fittings is very important for offshore oil and gas pipelines. To investigate the sealing behavior of a ring-shaped wedge seal, global and local numerical models of the ringpipe interaction have been developed based on the finite-element method. First, the sealing process of the ring under pressure is simulated. Second, a criterion for the penetration of fluid pressure is applied in these models to assess how the sealing capacity changes along the contact surface. Finally, the contact magnitude of interference and the shape of the sawtooth heaves on the sealing ring are predicted and compared. The results show an interesting concentration of von Mises stress in the sealing ring and also that the peak contact pressure appears in the sealing zone. However, the penetration of fluid pressure has obvious effects on the distributions of von Mises stress and contact pressure. The best sealing performance is when the axial displacement of the sealing ring is 1.4 mm and the contact magnitude of interference is 0.3 mm. Given the sawtooth heave of sealing ring, semicircular heave gives the better sealing capacity compared with trapezoidal heave.

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Finite element modeling of burst failure in unbonded flexible risers

Cited by 10 publications

References 9 publications

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

The motion response and hydrodynamic performance comparisons of the new subsea suspended manifold with two mooring scenarios

Unbonded Flexible Pipe Under Internal Pressure

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