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Keywords: Pipeline
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Proceedings Papers

Proc. ASME. OMAE2023, Volume 3: Materials Technology; Pipelines, Risers, and Subsea Systems, V003T04A022, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-106777
... Abstract Concrete mattresses are widely used in the offshore industry for a variety of purposes, including to stabilise pipelines, flowlines and umbilicals, provide supports for span correction or crossings over other services and for scour mitigation. Despite their widespread use...
Proceedings Papers

Proc. ASME. OMAE2022, Volume 3: Materials Technology; Pipelines, Risers, and Subsea Systems, V003T04A026, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-79870
... of the computational activities reducing Engineers to simple “button pushers” but it enables an innovative approach of the design activities that contributes to rise their level of expertise. An example of implementation of the digitalisation process for the design of subsea pipelines is presented here. The objective...
Proceedings Papers

Proc. ASME. OMAE2022, Volume 3: Materials Technology; Pipelines, Risers, and Subsea Systems, V003T03A016, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-78918
... displacement (CTOD) specimens for the same specimen orientation in the base material, both for conditions where unstable fracture and fully ductile response occurs. charpy toughness pipeline high strength steel splitting ductile to brittle transition Proceedings of the ASME 2022 41st...
Proceedings Papers

Proc. ASME. OMAE2021, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A025, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-63005
... Abstract Welding acceptance criteria derived through ECA is typically performed after the detailed design. The design loads, together with pipeline and girth weld material testing data, are inputs to ECA and used to evaluate the pipeline girth weld integrity for determining the criticality...
Proceedings Papers

Proc. ASME. OMAE2021, Volume 3: Materials Technology, V003T03A009, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62443
... on CTOD behavior in the weld heat affected zone when the crack advance is in the through thickness direction. charpy toughness pipeline steel splitting Proceedings of the ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering OMAE2021 June 21-30, 2021, Virtual...
Proceedings Papers

Proc. ASME. OMAE2021, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A028, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-63458
... Abstract This paper describes a multi-pronged continuous improvement effort to manage the spans of a deep-water pipeline, where even without wave action, the currents are strong enough to move sediments, leading to constantly changing spans. The effort includes: (1) using strakes rather than...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 11: Petroleum Technology, V011T11A044, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18704
...-Newtonian pipeline two-phase flow pressure drop EXPERIMENTAL INVESTIGATION OF PRESSURE DROP OF GAS/NON-NEWTONIAN FLOW IN HORIZONTAL PIPES Faraj Ben Rajeb1,2, Mohamed Odan1,2, Syed Imtiaz1, Yan Zhang1, Mohamed M. Awad4, Mohammad Azizur Rahman1,3 1 Faculty of Engineering & Applied Science, Memorial...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 7: Polar and Arctic Sciences and Technology, V007T07A004, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-19290
... Abstract Offshore pipelines in an Arctic or ice-covered environment face unique challenges different from traditional subsea pipeline design. In 2018, Intecsea as lead consultancy delivered a report to the US Bureau of Safety and Environmental Enforcement (BSEE) Alaska Region which provided...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 8: CFD and FSI, V008T08A034, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-19310
... Abstract This study investigates the effect of wave-induced boundary layer on the on-bottom stability of small-diameter pipelines laid on the seabed. An ω-based wall boundary condition is adopted, owing to its high mesh resolution down to the viscous sublayer to resolve the flow around...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A033, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18261
... 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...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A039, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18611
... Abstract S-lay installation methodology is an industry accepted method for the installation of subsea rigid pipelines. Pipeline initiation is a major operation during the start of S-lay and its selection is dependent on various factors including project requirements, field layout and strength...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A041, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18723
... Abstract In order to figure out the dynamic characteristics of the pipeline and cable during pipeline end termination (PLET) installation based on S-laying, numerical simulation is carried out based on a practical operation project performed at Liwan oil and gas fields in the South China Sea...
Proceedings Papers

Proc. ASME. OMAE2019, Volume 1: Offshore Technology; Offshore Geotechnics, V001T01A005, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96069
... Abstract In the present study, two-phase flow simulations using SedFoam (an open-source multi-dimensional Eulerian two-phase solver based on OpenFOAM) are employed to investigate the scour phenomenon around pipelines in the vicinity of the seabed. A complete transport profile from the immobile...
Proceedings Papers

Proc. ASME. OMAE2019, Volume 5B: Pipelines, Risers, and Subsea Systems, V05BT04A014, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-95470
... Abstract Mechanical damage in subsea pipelines in the form of local dents / buckles due to excessive bending deformation may severely threaten their structural integrity. A dent / buckle has two significant effects on the pipeline integrity. Notably, residual stresses are set up as result...
Proceedings Papers

Proc. ASME. OMAE2013, Volume 3: Materials Technology; Ocean Space Utilization, V003T03A043, June 9–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2013-11163
... Submarine pipelines installed on very uneven sea bottom usually results in many long free spans. If the free spans are above a certain length the pipeline will be subjected to vortex induced vibration (VIV) caused by sea currents or wave motions transverse to the pipeline direction. The onset...
Proceedings Papers

Proc. ASME. OMAE2013, Volume 4A: Pipeline and Riser Technology, V04AT04A050, June 9–14, 2013
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2013-10647
... Ensuring pipeline stability is a fundamental aspect of subsea pipeline design and can contribute a significant proportion of project costs in regions with large diameter trunklines, shallow water and severe geotechnical and metocean conditions [1]. Reducing the conservatism and simplifications...
Proceedings Papers

Proc. ASME. OMAE2012, Volume 2: Structures, Safety and Reliability, 55-64, July 1–6, 2012
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2012-83098
... This paper reviews the consequence of failure (CoF) estimation for oil and gas spills based from Quantitative Risk Assessment (QRA) study. The main purpose of QRA is to determine the target reliabilities for each different pipeline system segments; and the purpose of CoF is to determine...
Proceedings Papers

Proc. ASME. OMAE2012, Volume 2: Structures, Safety and Reliability, 643-647, July 1–6, 2012
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2012-84057
... ductile steel. pipeline fracture mechanics ductile fracture finite element analysis material modeling residual stresses 3D FRACTURE SIMULATIONS OF SENT SPECIMENS INCLUDING WELDING RESIDUAL STRESSES Alexandre Kane, Sigmund Ås, Erling Østby Applied Mechanics and Corrosion, SINTEF Materials...
Proceedings Papers

Proc. ASME. OMAE2011, Volume 4: Pipeline and Riser Technology, 487-494, June 19–24, 2011
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2011-49498
..., and long term shut down, and the maximum production flow. It is more concerned for fact that thicker wall pipe results in much greater thermal load so to make the pipeline strength and tie-in designs more challenging. Burying sections of a HPHT pipeline can provide the advantages of thermal insulation...
Proceedings Papers

Proc. ASME. OMAE2011, Volume 2: Structures, Safety and Reliability, 559-570, June 19–24, 2011
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2011-49770
... 01 11 2011 This paper is concerned with a response based method for determining metocean design criteria for offshore pipelines. The method determines a set of metocean parameters that are consistent with the extreme response of the pipeline, and hence, incorporates the dependence...