Panorama Technology,es
The exploration and production of oil and gas offshore in deep and ultra-deep waters is associated with the frontier of knowledge regarding the integrity of the structures of the equipment used. This is due to the fact that they operate in extreme temperature conditions., pressure and aggressiveness of the environment, still, associated with difficult inspection and maintenance. Therefore, the search for new technologies that can increase the operating capacity as well as the reliability index is essential for the continued expansion of these fields..
Technology description
The present invention describes a corrosion-resistant flexible duct with a polymeric coating on the reinforcement located in the annular region., a flexible duct coating process, and use of these flexible ducts. Specifically, These flexible pipelines can be used on oil platforms at low temperatures., medium and high depth. The present invention is located in the fields of Chemistry and Engineering.
of non-adherent layers.
Problem Fixed
No contexto dos dutos flexíveis utilizados para o transporte de produção e injeção/reinjeção de fluidos, a corrosão das camadas metálicas de aço ao carbono, especialmente nas condições de operação com anular alagado, representa um desafio significativo. Este fenômeno, caracterizado pela exposição das armaduras metálicas a ambientes agressivos potencializados pela presença de compostos químicos permeados, tem sido amplamente observado e documentado em dutos retirados de operação. However, com o desenvolvimento e aplicação de revestimentos protetores eficazes, os problemas relacionados à perda de espessura, nucleação de defeitos pontuais, corrosão localizada e trincamento por sulfetos, CO2, CO ou cloretos, além de fragilização por hidrogênio e quebra de filmes passivos, têm sido minimizados. Esses avanços na proteção das camadas metálicas não apenas prolongam a vida útil dos dutos, mas também reduzem a incidência de falhas críticas, assegurando a integridade dos sistemas de transporte e a continuidade operacional.
Applications
The invention falls within the area of fluid transport technology, more specifically flexible pipes for exploration, oil production and gas injection in offshore oil fields.
Advantages
The advantage of this polymeric coating compared to metallic coatings, available, lies in the fact that there is no formation of fragile interfaces between coating and substrate; the ductility of the polymer is adequate as it is greater than the ductility of the substrate; resistance to permeation and attack by corrosive media is considered high; the porosity of this coating is lower compared to metallic coatings applied by thermal spray processes. The wear resistance of the polymeric coating is such that it would allow the removal of anti-friction layers common in flexible ducts, which would represent another advantage, since the arrangement of these layers induces the formation of gaps with consequent localized attack on the steel reinforcement.
Technology Readiness Level (TRL – Technology Readiness Level)
Status and opportunity
Patent published by INPI under application number BR 10 2020 015625-0.
The patent can be found in full at Lume bylink.
