... 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...

... 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...

... 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...

... 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...

... 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 (force) and the pipe displacement...

... 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 has...

... 01 2011 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...

... state. An integrated approach is therefore advocated, to obtain a robust design range of imperfection sizes in a deterministic fashion. 11 01 2011 Lateral buckling pipeline subsea out-of-straightness pipelay finite element high pressure / high temperature buckle formation 1...

... 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. 22 02 2010 Lateral buckling...

... 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 can be developed...

... 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...

... 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 is investigated...

... 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 the robustness...

... for the pipeline. The response function defines the maximum bending moment as a function of key uncertain parameters. The required relationships were based on an extensive series of lateral buckling analyses of the PIP system. The resulting response function can also be used to assess to what extent the loading...