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Keywords: fatigue life
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32329-MS
... management complex reservoir artificial intelligence fatigue life crack size api 17tr8 fcgr curve fatigue analysis requirement geometry fatigue failure frequency fatigue screening test data load histogram offshore technology conference fracture mechanic Continued Challenge...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32284-MS
... for dynamic subsea cables Background The following experimental approach and results demonstrates the effect of various relevant parameters on the fatigue life of copper conductors from which fatigue life estimations can be made as well as inform experimental requirements. Test materials...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32500-MS
... offshore pipeline maintenance strategy natural ga pipeline artificial intelligence fatigue life fatigue damage midstream oil & gas machine learning offshore technology conference computational model physical asset predictive maintenance strategy pipeline fatigue damage monitoring...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31725-MS
... was to hire the manufacturer to re-calculate the dynamic sections' fatigue life, utilizing original design computational modeling, but considering the updated METOCEAN data of the Campos basin. The common failure mode to be focused was the rupture of the tensile armour under fatigue stress. The umbilicals...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31717-MS
... digital twin wellbore design information mooring integrity management subsea system mooring system mechanical engineer international conference case study external environmental condition offshore technology conference fatigue life inspection data template Introduction and Background...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31949-MS
... acoustic modes in the pipe and structural mode frequencies. This paper takes this notion further, translating the structural modes into a predictable fatigue life using S-N curves. A typical AIV broadband excitation level can range anywhere between 100Hz – 3000Hz. Modal analysis of the pipework near...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-32022-MS
.... It was found that a longer riser or a flatter arch gives higher slugging fatigue lives. Higher arch flatness alleviates long period slugging, which drives the slugging fatigue due to integral effect over the lower catenary, and increases fatigue life. Another interesting finding was that the shorter period...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-32068-MS
... and the resultant casing collapse failure, and 2) casing fatigue. These cyclic loads to the casing structure often result in detrimental fatigue failures at essential casing joints and welds. Wrong cyclic strain calculations will lead to false estimation of casing fatigue life. This, in turn, would lead to abuse...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31109-MS
... Abstract Subsea production systems have been using API-specified methods and detection criteria for nondestructive examination (NDE) for equipment up to 15,000-psi rated working pressure. With higher pressure requirements and use of methods for evaluation of the fatigue life of HPHT equipment...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31165-MS
... Thickened Ends (FTEs) improves the fatigue life of SCRs and welded connections in general. This novel assembly has many advantages. It overcomes the thickness limitation of welding traditional upset ends and reduces offshore welding time, cost, and risk. When FTEs are used in simple SCRs, they render...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31047-MS
... Abstract Subsea wellhead systems have a design fatigue life that is expected to withstand the damage incurred from stress caused by cyclic loading during its operation. Wellhead fatigue is a critical factor when drilling offshore wells because the condition of the wellhead determines the length...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31037-MS
... reduce the stress at the touchdown zone (TDZ) within acceptable limits and improves fatigue life when compared to a Steel Catenary Rigid (SCR). The state-of-art concept eliminates the necessity of buoys in a SLWR concept. Further, there will be saving in installation time, this combined reduces...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31252-MS
... process pipeline corrosion material system porosity hip vessel modern hip system pressure vessel furnace offshore technology conference hiping fatigue life microstructure Introduction The oil and gas industry trend to place more stringent regulations and requirements on projects has...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31282-MS
... challenges encountered in fatigue evaluation will be discussed. This will highlight the current assumptions and unknowns in data that can form the subject of evaluation for a future joint industry study. subsea system modeling refinement operation outer barrel auxiliary line viv fatigue life...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30814-MS
... that mean tension significantly impacts chain fatigue and thus whole mooring system fatigue life. Fatigue is a significant challenge for riser design due to tension and bending. The hangoff and touchdown zones are usually the most fatigue critical areas for risers as well. Similar to the mooring design...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29596-MS
... damage fatigue life requirement spread moored fpso upstream oil & gas gamma value inch scr sensitivity scr contribution inch production offshore technology conference class curve riser design challenge subject touchdown region Orcaflex 9.8c , Static and Dynamic mooring...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29608-MS
... strength and fatigue with the contributions from wave fatigue, VIM and VIV. The factored riser fatigue life is provided with the original safety factors to meet the intended 10 more years of service life. keel joint design life fatigue damage offshore technology conference life extension dynamic...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29223-MS
... API RP 17G . Recommended Practice for Completion/Workover Risers . Identical to ISO 13628-7, 2006 . BS 7608 . Guide for fatigue design and assessment of steel products . 2014 . Cetin , A. Härkegård , G. Fatigue life prediction for large threaded components . Procedia...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29338-MS
... safety factor upstream oil & gas assessment requirement wire rope strength ground chain inspection metocean data subsea system installation upper wire fpso fatigue life life extension project extension mooring system corrosion riser wire oil field Alan Wang etc...

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