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Keywords: fatigue life
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30814-MS
... Fatigue Life of Steel Tube Umbilical Risers – New Approaches to Evaluating Fatigue Life using Enhanced Nonlinear Time Domain Methods. OTC-16631-MS, OTC 2004 , Houston, TX . American Petroleum Institute . API RP 2MET . Derivation of Metocean Design and Operating Conditions, First Edition, Nov...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29223-MS
... analysis methodology stress range fatigue load capacity connector non-preloaded connector upstream oil & gas loading subsea system dmn curve fatigue life test specimen mean stress offshore technology conference crack initiation location frequency subsea production equipment...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29338-MS
... 1.75 1.70 1.73 2.20 #8 1.75 1.77 1.77 1.74 1.76 2.24 #9 1.68 1.70 1.71 1.66 1.70 2.16 #10 1.82 1.84 1.85 1.80 1.84 2.34 14 OTC-29338-MS Table 9 Remaining Fatigue Life of Mooring Lines Remaining Fatigue Life (RFL) Line RequestedExtended Life (L) ACT Chain Upper Wire Riser Wire Dip Chain Ground Wire #1...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29449-MS
...OTC-29449-MS Assessing Fatigue Life of Corroded Mooring Chains Through Advanced Analysis Sue Wang and XiYing Zhang, ABS; Tom Kwan, Kwan Engineering Service; Kaitung Ma, Chevron Corporation; Zhen Li and David A. Baker, ExxonMobil Upstream Research Co.; Amir Izadparast, SOFEC; Gary H. Farrow and...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29455-MS
... fatigue life of the physical asset (subsea pipeline system in the current study) using machine learning and data analytics[3,4,5]. Digital twin can show the true behaviour the physical assset including early fault detection etc. Due to the low-cost sensor development and the advancement of the artificial...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29471-MS
... offshore technology conference contact stress completion vibration acceleration external pressure principal stress coexistence high temperature materials and corrosion seal failure fatigue life tubular connection well integrity flowline corrosion amplitude mpa pipeline corrosion...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29488-MS
... technique is investigated. Its remaining fatigue life is obtained by simulating fatigue crack growth, under two sets of residual stresses generated by different mandrel diameters. The results are then compared to the crack arrest hole (CAH) approach. Through these case studies, XFEM shows adequacy for FFS...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29534-MS
... Abstract Subsea equipment covered by the API Spec 17 subcommittee has had limited focus on assessing fatigue life because of external environmental loads using traditional analysis methods. With the current trend of high-pressure, high-temperature (HPHT) development, the industry is migrating...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29596-MS
.... fatigue 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 Presentation of OTC-29596-MS Presentation of...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29608-MS
... analytical tools. It computes the riser global performance including dynamic 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. INTRODUCTION A Deep Draft...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29060-MS
... conservatism and thus cost. A riser with shorter strake length but more fatigue life will result in reduced cost too provided that adequate VIV fatigue life is preserved. relative velocity riser motion range fatigue life hangoff point pontoon hydrodynamic force background current riser fatigue...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28674-MS
... confirmthat various outputs are within allowable limits of design stress and marine operability. The paper also lists advantages and disadvantages of the towed installation of a SLWR when compared to J-lay. slwr fatigue life linear weight buoyancy tow fatigue damage offshore technology conference...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28653-MS
... solutions and recommendations for improvements of fatigue life, and practical ways for the global fatigue screening are also provided. upstream oil & gas tower structure amplitude wind-induced fatigue calculation design practice fatigue screening fatigue analysis wind direction frequency...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28747-MS
... proposed procedure can be modified for an AIV analysis specifically, which is not presented here. excitation piping design upstream oil & gas vibration frequency range natural frequency fatigue life discontinuity procedure sn curve reducer fatigue damage offshore technology conference...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27692-MS
... modelling of full scale offshore drilling risers in a variety of water depths and conditions; improving operability and riser fatigue life. Operability during GoM eddy current events was calculated to increase 30% annually, equating to estimated annual savings of over $10M, with potential to save similar...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27662-MS
... provided BOP response similar to those observed in the field both above and below the mudline. Whereas, the analyses done with the API (2011) model significantly overestimated the ‘measured’ conductor fatigue life above the mudline and underestimated it below. The results of this monitoring program are a...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27820-MS
.... The S-N fatigue life predictions for bolting are evaluated based on mean stress and peak stress ranges in the bolt threads. As an alternate to S-N evaluation, the stress distribution at the root radius of the thread was input into the fracture mechanics analysis as a weight function for calculating...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27889-MS
... numerical model, based on the methodology established in the RPSEA5404 project [ 11 ]. The VIM amplitude reductions due to external damping established from the RPSEA5404 project have been used in the study. Mooring and riser configurations that satisfy the fatigue life requirements corresponding to...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27562-MS
... Wellhead fatigue monitoring was performed during Plug and Abandonment (P&A) activities of a well in the Gulf of Mexico (GOM). Fatigue monitoring was deemed necessary for several reasons: an older vintage of wellhead system with uncertain fatigue life consumption from previous drilling...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27564-MS
... proc aubeny scr fatigue life artificial intelligence loading steel catenary riser trench clukey upstream oil & gas interaction cyclic loading consolidation effect tdz stiffness load cycle riser offshore technology conf displacement ASCE and American Life Lines Alliance...

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