A Historical Analysis of Corrosion and Protection of Campos Basin Subsea Production System Article Swipe
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· 2024
· Open Access
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· DOI: https://doi.org/10.1590/1980-5373-mr-2024-0187
· OA: W4405645460
The production systems in Campos Basin date back more than 40 years, and throughout these decades, the search for oil and gas guided operators to investigate and produce from shallow waters to ultra-deep waters. The use of normative and mandatory cathodic protection criteria, in accordance with international standards (≤ -800 mVAg/AgCl) prevents corrosion and maintains structural subsea integrity systems. According to the Brazilian Safety Management of Operational Submarine Systems (SGSS) regulation, monitored by the Brazilian National Petroleum Agency (ANP), noncompliance with the criteria requires operators to recover the electrochemical protection potential. A historical analysis of the electrochemical potentials and inspections obtained by Remote Operated Vehicles (ROV) showed the preserved state of equipment integrity, even when the protection criteria were out of range. In addition to analysis and technical reports, laboratory tests, thermodynamic simulation, and a literature review have revealed the possibility of normative criteria flexibility. This result could allow operators to significantly reduce the number of underwater interventions as well as reduce the environmental impact by reducing CO2 emissions.
