Evaluation of polymeric coatings for MIC problems during oil and gas transportation

MARIANA PAGNUSSAT; MÓNICA ZAPPONI; VERÓNICA RODRÍGUEZ BAUZADA; PABLO CASTRO; SILVIA ELENA RASTELLI; SANDRA GABRIELA GÓMEZ DE SARAVIA; MARISA VIERA

Barra da Tijuca, Rio de Janeiro

Congreso; LatinCORR & InterCorr 2023; 2023

Asoc.Brasilera de corrosión (ABRACO); Association for Materials Protection and Performance (AMPP)

During oil and gas operations, pipelines are subjected to corrosion deterioration mechanisms,one of which is microbiologically influenced corrosion (MIC). The aim of this work was toanalyze the behavior of different polymeric coatings in a continuous culture of sulfate-reducingbacteria (SRB) after 3 and 6 months of exposure. L80 API carbon steel samples with differentcoatings were placed in the bioreactor. At the end of the exposure periods, the samples werescraped with a sterile scalpel and cultured in Postgate B liquid medium to count biofilm-formingbacteria. Control samples, L80 API carbon steel with the different coatings exposed to PostgateC medium without inoculation were assayed. To evaluate the morphology of the biofilms andthe integrity of the coatings, the samples were observed with the scanning electron microscope.The microphotographs were analyzed using the software ImageJ. Surface elemental analysisusing EDS was performed.