Static and dynamic mooring analysis - Stability of floating production storage and offloading (FPSO) risers for extreme environmental conditions

Rho, Yu-Ho; Kim, Kookhyun; Jo, Chul H.; Kim, Do-Youb

doi:10.3744/jnaoe.2013.5.2.179

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, FPSOs are usually the preferred platform in these regions without local pipelines to export oil. A mooring system with multi-mooring lines can be adopted to keep the position for FPSOs (Rho et al, 2013).…”

Section: Fpsomentioning

confidence: 99%

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Rui

Zhang

et al. 2023

Deep Underground Science and Engineering

View full text Add to dashboard Cite

The deep‐sea ground contains a huge amount of energy and mineral resources, for example, oil, gas, and minerals. Various infrastructures such as floating structures, seabed structures, and foundations have been developed to exploit these resources. The seabed structures and foundations can be mainly classified into three types: subsea production structures, offshore pipelines, and anchors. This study reviewed the development, installation, and operation of these infrastructures, including their structures, design, installation, marine environment loads, and applications. On this basis, the research gaps and further research directions were explored through this literature review. First, different floating structures were briefly analyzed and reviewed to introduce the design requirements of the seabed structures and foundations. Second, the subsea production structures, including subsea manifolds and their foundations, were reviewed and discussed. Third, the basic characteristics and design methods of deep‐sea pipelines, including subsea pipelines and risers, were analyzed and reviewed. Finally, the installation and bearing capacity of deep‐sea subsea anchors and seabed trench influence on the anchor were reviewed. Through the review, it was found that marine environment conditions are the key inputs for any offshore structure design. The fabrication, installation, and operation of infrastructures should carefully consider the marine loads and geological conditions. Different structures have their own mechanical problems. The fatigue and stability of pipelines mainly depend on the soil‐structure interaction. Anchor selection should consider soil types and possible trench formation. These focuses and research gaps can provide a helpful guide on further research, installation, and operation of deep‐sea structures and foundations.

show abstract

Section: Fpsomentioning

confidence: 99%

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Rui

Zhang

et al. 2023

Deep Underground Science and Engineering

View full text Add to dashboard Cite

show abstract

“…In fact, the riser system also affects the stiffness of the whole mooring system because the marine riser is a key component of deep-sea floating structures. It is not only a connecting channel between sea surface and seabed but also a link between underwater wellhead and floating body [8]. In recent years, some scholars considered the coupling between ships and mooring risers and regarded the action of risers as the tension of the ship hull.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of the subsea production system with lazy-wave risers attached to FPSO

Zhang,

Zhao,

Zhu

et al. 2023

PLoS ONE

View full text Add to dashboard Cite

The lazy-wave riser is an input and output riser for a flexible development system, which is widely used in all the riser and pipeline systems. Because of the influence of various factors, its configuration description, control and motion which have a strong nonlinear character are complex during the running process of the lazy-wave riser. Reference to the specific structure and environmental parameters of a certain lazy-wave risers system with a 300 thousand tons FPSO, with the basis of the specific process of the flexible riser system at work, the lazy-wave risers were discretized into lumped mass models, combined with AQWA, the simplified dynamic model of the whole system at the depth of 2100m has been established by the large hydrodynamic analysis software OrcaFlex. The dynamic response characteristics of the lazy-wave risers have been given by using time domain coupling method. With and without the consideration of the 2nd wave drift load in the simulation process, the effects of the 2nd wave drift load on the results are obtained. The simulation results reveal the difficulty of simulation convergence caused by a large number of risers and flexible components. The 2nd order wave drift loads have a significant effect on the riser system, resulting in the increasement of the effective tension at each end of each riser. To counteract the magnitude of the FPSO response caused by such loads, the number of mooring lines needed to be increased or combined with dynamic positioning techniques to optimize the design.

show abstract

Static and dynamic mooring analysis - Stability of floating production storage and offloading (FPSO) risers for extreme environmental conditions

Abstract: ABSTRACT:Floating production storage and offloading (FPSO)

Cited by 2 publications

References 1 publication

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Seabed structures and foundations related to deep‐sea resource development: A review based on design and research

Dynamic analysis of the subsea production system with lazy-wave risers attached to FPSO

Contact Info

Product

Resources

About