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Keywords: sheath
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35180-MS
... application reuse database geologist geology pipe pipeline corrosion corrosion inhibition information integration campos basin platform sheath operator petrobras offshore technology conference flexible pipe co 2 supplier houston By 1999, the Roncador pilot system was started through...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31811-MS
... materials and corrosion subsurface corrosion h2s management resistance unbonded flexible pipe procedure manufacturer qualification q-fmeca certificate sheath tolerance loading manufacturing process requirement new material As the flexible pipe industry is a competitive industry...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26998-MS
... with oxygen access as typically experienced in connection with large external sheath damages near the water surface. A successful life extension for a particular flexible pipe requires a thorough process starting with an assessment of current status of the flexible pipe with basis in original design data...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26948-MS
... hydrostatic con- straints; bore pressure being dropped brings high compressive stresses due to reverse end cap effect. If the external sheath is unsealed, the axial compression loads transmitted to the tensile armors induce their radial expansion, which can lead to their buckling. Specific layers shall...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25236-MS
... is no longer impacted by fluid density These advantages allow greater flexibility in the position of the FPSO relative to the SPM with a fixed length of riser. Because CFC Armor is not susceptible to corrosion, service life of the flexible pipe is unaffected by breaching of the outer sheath and subsequent...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23670-MS
... to identifythe so-called annulus as the space between the internal and external polymericsheaths. This space assumes some 10% of the total volume between these sheaths. It is central to the integrity and integrity management. Integrity Management is aimed at managing the risk of failure. This paperbriefly...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21371-MS
..., they will diffuse through the pressure sheath and may induce corrosion phenomena on the structural layers. H2S gas could thus be present in the annulus. It is then necessary to use pressure vault and armour wires made of sour service steel grades instead of sweet service steel grades. In addition to the cost...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20578-MS
... to the outside of the pipe are, an interlocked carcass that resists hydrostatic collapse or crushing loads, provides hard wearing surface for pigging requirements and also sand erosion resistance. Pressure sheath is then extruded on top of this carcass and ensures internal fluid containment. The material...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20604-MS
.... According to the study report State of the Art Flexible Riser Integrity Issues [UKOOA, 2001], the failure mechanisms which most contributed to failure of flexible riser system were PA-11 pressure sheath ageing, PVDF end-fitting pull-out and ancillary device failure. The PVDF end-fitting pull-out has...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-21067-MS
... improve the performance of these pipes to meet the demands of production regularity under increasingly severe operational conditions. The polymeric pressure sheath is a critical component in flexible pipes as the function of the layer is to make the pipe leak proof. Therefore, it is important to carry out...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19250-MS
... of 2000m long. The sealed plastic outer sheath of the flexible risers is protected by a plastic layer re-enforced by means of high strength aramid tapes. This design of the pipe structure significantly increases the mechanical resistance of flexible pipe against any kind of external damage as demonstrated...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18703-MS
... and environmental benefits are achieved from the subsequent reduction in need for compression. upstream oil & gas pressure loss export riser gas export riser flexible riser inner tube sheath statoil norway otc 18703 external sheath smoothbore riser roughbore riser noise topsides...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18946-MS
... torsion rupture injection sensor flexible riser monitoring annular space sheath inspection wire rupture end fitting riser upstream oil & gas riser top section integrity assessment relation pipe flexible pipe Copyright 2007, Offshore Technology Conference This paper...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2006
Paper Number: OTC-18044-MS
... (except the stiffener flexible body) which are in permanent contact with the riser outer sheath, see figure 8. Petrobras has experienced field problems related to excessive wear (abrasion) at the top section of risers, leading in some cases to external sheath tearing. The loss of water tightness severely...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15166-MS
... corrugated metallic liner construction upstream oil & gas subsea system oilfield chemistry metallic liner production chemistry flexible metallic liner thermoplastic liner collapse pressure sheath polymeric sheath hose collapse resistance controls and umbilicals liner offshore...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2002
Paper Number: OTC-14065-MS
... in the offshore industry transport water and/or oil and/or gas. Due to permeation, some of the components in the bore fluid will permeate through the pressure sheath of the flexible pipe and into the annular space between the pressure sheath and the outer sheath. Vent ports in the end fitting of each pipe...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2002
Paper Number: OTC-14128-MS
...-up fluid considerations in the carcass metallurgy, and tensile and armor wire design for the testing and operation conditions. Because the design temperature caused aging concern for the Polyamide-11 (PA-11) pressure sheath, additional manufacturing requirements were placed on this flexible pipe...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1997
Paper Number: OTC-8561-MS
... oil industry was first considered and implemented, in 1973. However, this market remained somehow anecdotal and the number of applications limited. sheath riser system deep water pipe technology narzul application flexibility subsea industry flowline upstream oil & gas...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1996
Paper Number: OTC-8138-MS
... in Figure (l), and the various layers present are : Polyethylene (HOPE) external sheath Fabric tape Crosswound first armour Flat spiral second armout Zeta spiral reinforcement Intermediate pressure Rilsan sheath Intcdoeked stainless steel type 316L carcass The pressure and tensile...

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