... element method within the ABAQUS software. Further, following a validation process, the study ventured into an intricate lateral buckling analysis. Here, the focus was the displacement-controlled local buckling limit state (DCC), emphasizing the pipe-soil interaction in the pre-salt region’s clay soil...

... Abstract This paper presents a probabilistic approach for lateral buckling analysis based on a global FE model via a case study of a 5km long subsea flowline with sleeper mitigators on an undulating seabed. In the case study, axial/lateral pipe-soil interaction (PSI), pipe/sleeper friction...

... Abstract The lateral buckling design process for deep and ultra deep water fields has matured in recent years, particularly with steel sleepers and/or distributed buoyancies as the main triggering concepts (buckling initiators). However, depending on field conditions and geographical location...

... Abstract Flexible pipes and subsea cables are often manufactured with a number of helically wound armor wire layers. Lateral buckling of tensile armor wire may occur when the flexible pipe is exposed to combined axial compressive load and cyclic bending. During installation and operation...

... Abstract This paper presents a novel approach to manage irregular external loads thro ugh an enhanced design of unbonded flexible pipeline caused by lateral buckling of tensile armour wires. The design challenge is to predict the armour wire kinematics due to random loading conditions. Over...

... Abstract The design process of lateral buckling has gained in maturity over the last ten years. However the design of any required engineered trigger to control the formation of lateral buckles remains open to a wide range of design concepts (like sleeper, buoyancy modules, snake lay...

... and large displacement on normal pipe sections and RBM sections. The main loads for the flowline were from the operational conditions in term of temperature and pressure profiles. Lateral buckling mitigation results include the RBM location configurations, buckling locations, effective axial forces and von...

... Abstract Residual curvature installation of subsea pipelines has become a popular method for lateral buckling management because of its low-cost implementation and high reliability. The method is foreseen to remain attractive due to the positive operational feedback made available to the public...

... and installation challenges concerning lateral buckling and pipeline walking behaviors, nowadays there is a significant amount of deepwater pipelines operating with buckle initiators (triggers) as well as walking mitigation devices in offshore Brazil. Oil and gas pipelines, short gathering lines and long export...

... Abstract This paper addresses the results from a monitoring inspection as part of Petrobras regular plane of inspection of rigid pipelines (PIDR) and numerical Finite Element analysis (FEA) of two parallel HP/HT subsea pipelines operating in Brazilian deepwater subjected to lateral buckling...

... Lateral buckling has become a challenge to deep water and high pressure/high temperature (HP/HT) flowlines. In areas that support major commercial fishing industries (e.g. the North Sea in Norway and Atlantic Margin in UK), there is high possibility of interaction between flowlines and fishing...

..., typical example of an annulus flooded pipe-in-pipe (PIP) configuration. The full-scale FE models were created to simulate the pipeline thermal expansion / upheaval / lateral buckling responses. The pipe-soil interaction (PSI) elements were utilized to model the relationship between the soil resistance...

... 11 01 2011 The paper is concerned with the analysis of the effects of lateral buckling along a flowline. The analysis is considered to be relevant to the early stages of design, i.e. typically pre-FEED, and specifically addresses the significant effect that material strength properties...

... element models. Lateral buckling pipeline subsea Euler finite element high pressure / high temperature Proceedings of the ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering OMAE2010 June 6 - June 10, 2010, Shanghai, China OMAE2010-20262 EULER BUCKLING...

... of strain in the post-buckled state. An integrated approach is therefore advocated, to obtain a robust design range of imperfection sizes in a deterministic fashion. Lateral buckling pipeline subsea out-of-straightness pipelay finite element high pressure / high temperature buckle formation...

... interactions of multiple features potentially present along a pipeline route, including thermal transients, slope, route bends and tensile load effects. The resultant combinations may manifest themselves in the through-life distribution of axial movement along the pipeline. Lateral buckling pipeline...

... to the phenomenon of lateral buckling and pipeline walking in addition to free spanning and on-bottom stability. The lateral buckling behavior of the PIP is the major challenge for the design. It can be a safe and effective way to accommodate the thermal expansion of a hot pipeline, however high stress and strains...

... by seabed or pipelay out-of-straightness features, a robust design solution can be obtained. This paper presents a methodology whereby quantitative risk assessment may be carried out on the reliability of lateral buckling initiation systems, considering the pipeline in its entirety, rather than considering...

... 22 05 2009 Due to the offshore development moving to a more hostile environment, thermal buckling becomes an important issue needed to be considered for HPHT (high-pressure high temperature) subsea pipelines design. In order to control the lateral buckling, the snaked lay method...

... 05 01 2009 The Penguins pipeline is a 60 km PIP system designed to buckle laterally on the seabed. The pipeline has been laid in a snaked shape in order to initiate regular lateral buckles. However there is significant uncertainty over the buckle formation process and concern over...