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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32195-MS
... that process is tailored to its unique structural aspects. In addition to evaluating the structure for metocean strength and fatigue loading, seismic and ship collision loading were also components of the assessment. Incorporating the current condition of the assets into the process, the probability of failure...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32267-MS
... loads. As a result, two-dimensional (2D) non-linear seismic site response analyses (SRA) in a finite element program were performed using an advanced constitutive model. Excess pore pressures generated during the design earthquake for the free field case (i.e. no structure), and for the near-field case...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31767-MS
... Abstract Annular pressure buildup (APB) can occur due to an increase in fluid temperature during the production of hot reservoir fluids, geomechanical loading from the surrounding rock formation, and hydraulic connectivity to pressurized reservoirs. In this study, a novel, compressible...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31889-MS
... perspective (i.e. phasing between vessel motions and wave elevation is incorrect), in a shallow water context (33 m) where direct wave loading on the risers contributes as much as vessel motions. Second comparing the use of a Gumbel distribution versus an empirical distribution to determine levels of non...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31811-MS
... testing, hence the need of full-scale tests, are given hereafter: – High contact pressures combined with relative displacements between layers, – Multiaxial loadings, – Combined pressure loadings (constant or transient), temperature loadings (constant or transient), and mechanical loadings...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31129-MS
... considerations in this paper include the critical design topics such as the embedment loss, the functions of the flap and keying. In addition, the paper also covers cyclic loading, sustained loading, keying disturbance, and out-of-plane loading. Recommendations are provided at the end of the paper to mature...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31171-MS
... As discussed, understanding the elongation behavior of polyester rope is critical to determine the target pre-loading for polyester rope. The elongation tests also provide insight into the additional elongation experienced due to storm loading such as hurricanes which is critical to determine...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31266-MS
... Abstract Composite structures are used as corrosion insensitive load bearing reinforcement in dynamic Thermoplastic Composite Pipe (TCP) and Hybrid Flexible Pipe (HFP) applications. The qualification of such structures can follow different strategies: product level versus material...
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-31115-MS
.... Design guides for such structures do not explicitly address how to account for the effects of interaction of blast and fire loading on structural performance and design acceptance criteria. If a wall assembly is required to provide rated fire and gas protection after an explosion event, it is generally...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31051-MS
... Abstract Wellhead connectors form a critical part of subsea tree production systems. Their location in the riser load path means that they are subjected to high levels of bending and tension loading in addition to internal pressure and cyclic loading. As more fields continue to be discovered...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30712-MS
... linear guar proppant fracturing materials associative polymer viscosity hydraulic fracturing eff shear rate fracturing fluid conductivity friction loss requirement polymerization rheometer loading offshore technology conference polymer eff system fracture Abstract In the past...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30895-MS
... load mode, especially in specific conditions, becomes the governing load of the well. Typical examples are salt or other creeping formations, which represent the most difficult load combinations to design and analyze. Salt creeping movements create three loading mechanisms that may result...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29249-MS
... pressure high temperature valve body loading internal pressure fracture mechanics hpht offshore technology conference material fracture toughness assessment hydraulic fracturing fracture toughness stress intensity factor complex reservoir fatigue assessment American Petroleum Institute...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29223-MS
... materials (i.e. low alloy steel and nickel based alloys). The methodology considers the effect on the fatigue life of both non-axisymmetric geometry/loading, FAT loading, as well as the interaction of different connector materials, capturing any potential change in hot spot locations. Three different non...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29377-MS
... the scope of past work, the current validation testing will be performed and will include (1) material characterization, (2) testing to validate the models used in the Load Resistance Factor Design (LRFD) for the global criteria and (3) testing to identify normal, extreme and survival externally applied...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29460-MS
... Abstract Fatigue damage due to structural stress is a common problem for equipment used in offshore drilling such subsea connectors and subsea riser joints. Fatigue damage is characterized by the weakening of a structure or component of the equipment due to cyclic loading. Consistently...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29463-MS
...). These models exhibit characteristic foundation behaviour such as nonlinearity, coupling of the load from different load components and hysteretic load dependent damping. This paper presents two of the REDWIN models, one applicable for monopile foundations and one for skirted suction caisson foundations. Use...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29557-MS
... conditions; the combination of the homogeneous sand and clay formulations to accurately model soil-structure response in layered soil profiles; and, consideration of the effects of cyclic loading in conjunction with the use of the PISA monotonic soil response formulations. Results will be presented...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29248-MS
... natural gas midstream oil & gas application coil design advancement exchanger gas monetization offshore technology conference cwhe blast wave lng stiffness pressure differential loading air products and chemicals loading construction blast event module advancement blast loading...

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