Overall, the present study demonstrates the feasibility of this type of structure as an alternative to traditional bridges or under-seabed tunnels.īae, Y.H.

The inclined mooring system is more effective in restricting tunnel motions compared to the vertical mooring system. The results show that tunnel motions and tether tensions grow with wave height and period and decrease with submergence depth. The numerical results are successfully validated by direct comparison against published experimental data. Two different mooring-line configurations, vertical and inclined, are studied to find an optimum design in terms of limiting tunnel motions and minimizing mooring-line tension. Variations of Buoyancy to Weight Ratio (BWR), wave steepness/period, and water/submergence depth are considered as design and environmental parameters in the study. BP Magnus D5 and D6 wells, the first tethered BOP operation in the north sea.įor more information please contact us directly.In the present study, the coupled dynamic response of a Submerged Floating Tunnel (SFT) and mooring lines under regular waves is solved by using two independent numerical simulation methods, OrcaFlex and CHARM3D, in time domain.

Helix Well Enhancer, design of the first intervention riser to be deployed from a lightweight intervention vessel.Shell Prelude, Landing String and Marine Riser analysis.BP Quad 204 Development, Marine riser, Workover Riser and Landing String analysis.Some of the key Riser analysis projects AS Mosley has worked on are listed below: Based in Aberdeen, we deliver Global Riser Analysis across the globe. Our expertise in using this software stems from over 100 combined years of experience. We perform Global Riser Analysis for steel top tensioned risers using OrcaFlex and Flexcom. We have experience with low-pressure and high-pressure risers with operations performed from anchored or dynamically positioned vessels as well as fixed structures. Design OptimisationĪS Mosley provides design optimisation to maximise operating limits and fatigue life of deepwater and shallow water riser systems. Furthermore, the accumulative fatigue damage is calculated on all equipment to ensure adequate service life of the riser and to provide a history of damage for the overall life of the well. Hydrostatic Pressure from External Seawater and Mud ContentsĪnalysis is carried out to verify the system under extreme and accidental loading and to determine the limits during installation and operation.Internal Pressure from Wellbore or Test.Vessel Motion in response to Environmental Loading.The riser loading can be external or internal and caused by: Global riser analysis is performed to determine the loading on flexible risers, top tensioned risers and subsea equipment.

Finite element analysis with orcaflex