... of the mechanical properties and cumulative fatigue damage of suction piles during drilling. Based on a flexible deformation model of the riser, and considering environmental load effects, mechanical analysis models for the platform-riser and the subsea wellhead suction pile foundation are established separately...

... utilizations. Subsea inspection interval 5 More frequent inspections increase the likelihood of identifying damage or degradation early, thus reducing the probability of a platform failure. Historical data and current condition score Fatigue damage Dynamic weight factor (1, 3 or 5) Based...

... Abstract Free spans exist in subsea multiphase pipelines laid over undulating seabed profiles or across continental scarps for offshore field developments. Slug flow induced fatigue damage on the free spans can potentially lead to pipeline re-sizing, more restrictive installation and welding...

... subsea system weibull parameter stress transfer function weibull shape parameter wave direction floating production system calculation stress concentration factor hull deflection fpso transfer function main wave direction fatigue damage probability upstream oil & gas sea state...

... tensile armour layer is more prone to fatigue damage of flexible riser on long term environmental loading. The evaluation of stresses on the tensile armour layer is a complicated method due to friction acting between the internal layers. The friction coefficients between layers are calculated using...

... the maximum riser stress and the cumulative fatigue damage of the SLWR configurations. It also demonstrates the significant reduction in computational cost as well automation helps to reduce the standard error occurs due to manual inputs. The all necessary design data are received from the cloud-based field...

... recorded globally, it is nonetheless accepted in the industry as a key concern and needs to be addressed. This paper discusses the various methods that can be adopted to help reduce fatigue damage on the existing wellhead and conductor systems involving both pre-operations engineering assessments...

... response amplitude operators (RAOs) and transfer functions are then combined to generate the SCR TDZ stress spectra and hence assess accumulated fatigue damage for all potential sea-states at the floater location. The fatigue lives of two large diameter SCRs subject to a sample irregular wave scatter...

... randomly generated waves for a wide range of seastates are analyzed in time domain. Fatigue damage results under randomly generated waves are calculated in time-domain analysis. Sensitivity of the results to various parameters like the soil type model, the severity of seastates and the duration of dynamic...

... demonstrate the commercial advantage of towing longer Pipeline Bundles as against multiple Pipeline Bundle tows. installation pipeline bundle section fabrication cdtm fatigue damage bundle offshore pipeline requirement operation asset and portfolio management weather window pipeline bundle...

... demonstrate that significant cost savings for the operator could be achieved using this method. pipeline lateral displacement island unstable pipeline section stability analysis concrete mattress offshore pipeline requirement offshore technology conference fatigue damage pipeline section...

... analysis tendon design fatigue life strength stiffness fatigue damage upstream oil & gas fatigue performance water depth installation requirement cellular tendon OTC-24723-MS Design and Analysis of Cellular Tendon for TLPs in Ultra-Deep Water Fields Offshore Southeast Asia Jim Yu...

... technology for tying back subsea wells to existing Spars or for outfitting new Spars for future tie backs. Area of Interest Riser Systems riser system strength result riser slwr installation vessel scr wall thickness fatigue damage load case configuration design orcaflex spar...

... sections, the combination of the resultant bending of the string and its rotation generate alternating stresses in the pipe body and connections, creating the conditions for potential fatigue damage. OCTG connections are not as fatigue resistant as tool joints due to its inherent design. Fatigue...

... Description of the Proposed Paper: The paper describes a reliable, effective, and practical, solution for monitoring and reporting fatigue damage of lashing lines on the Murphy Kikeh DTU. The solution is based on a ton-cycle method that uses measured line tension and calculated number...

... established and mostly purpose-written numerical methods. In these assessments the time histories of vessel movement and wave and current action on the immersed pipe are used as input and the dynamic response of the pipeline is evaluated. The higher local fatigue damage at the girth weld nearest the clamp...