... The dynamic response of the system is stabilized in part by a tuned liquid damper (TLD) incorporated into the main column at El. (+)17m. The TLD functions to increase structural damping and reduce system acceleration in response to environmental loading. It consists of three tanks filled...

... the seismic design 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...

... 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...

... in its actual environment, taking into account in particular the different interactions with other layers seen by the material in the current length and in the end-fitting area (high contact pressures, multiaxial loadings, combination of pressure and temperature variations, frictional / sliding behavior...

... 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...

... and keying, cyclic loading, sustained loading, keying disturbance, and out-of-plane loading. Recommendations are provided to advance the design of large-size SEPLAs, and more specific guidance is offered relative to the ambiguous requirements currently in the industry guidelines. Overview of SEPLA Design...

... for assessing wellhead fatigue and casing system damage due to wave-induced loading via the rig and riser system. Development included an extensive reliability engineering workshop, where subsystem FMECAs and TRL assessments were performed to determine a test program and qualification plan. Testing...

.... 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...

... Ratcheting is a progressive plastic deformation, which keeps increasing in each load cycle, and is required to be assessed at Normal and Extreme loads. The approach set forth in ASME BPVC section VIII Div. 3 [ 8 ], section KD-234 was used. The ratcheting analysis was run as a sequence of quasi...

... objectives: Evaluate the elongation behavior of the subprope subject to different installation preloading levels Estimate the delayed elongation behavior Estimate the stabilized tension post pre-loading Estimate the additional elongation experienced during a hurricane storm event Establish...

... 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...

.... A. , & Lal , M. ( 1995 , September 1 ). An Evaluation of Concentric Casing for Nonuniform Load Applications . Society of Petroleum Engineers . doi: 10.2118/29232-PA Willson , S. M. , Fossum , A. F. , & Fredrich , J. T. ( 2003 , March 1 ). Assessment of Salt Loading on Well...

... 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 J.E. Glass (Ed.), Water...

... to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of OTC copyright. Abstract Pile foundations supporting offshore structures are typically subjected to lateral cyclic loading. In design, the pile...

... associated with strain-softening soils. The FE analysis results are compared to the test data from the independently conducted model tests and the established results from the literature. Good agreements among different studies are observed. clukey constitutive model loading shear strain fe...

... loading, accounting for the fatigue impact of wave induced accelerations, new materials and coating systems for a marine environment, and novel base designs to take advantage of the modular construction. This paper describes these changes and the innovations in design and fabrication that will meet...

... 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...

...). 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...

... Abstract This paper introduces new classes of hang-offs for Steel Catenary Risers (SCRs) and Steel Lazy Wave Risers (SLWRs). Bending and tension loads are totally decoupled in the riser hang-offs presented. The new hang-offs can be designed for any temperature or pressure that can be supported...

... 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...