Corrosion behaviour of N80 carbon steel in formation water containing CO2 was studied by polarization curve technique, electrochemical impedance spectroscopy, weight loss test, scanning electron microscope, and X-ray diffraction. Effects of temperature and acetic acid concentration on the corrosion behaviour of N80 carbon steel were discussed. The results showed that increasing temperature not only enhanced the dissolution of steel substrate, but also promoted the precipitation of FeCO3, the addition of acetic acid enhanced localized corrosion attack on N80 carbon steel. FeCO3 was the main corrosion product. And there was a transition region between CO2 corrosion control and HAc corrosion control.
Corrosion of N80 carbon steel in oil field formation water containing CO2 in the absence and presence of acetic acid
Korrosion des Kohlenstoffstahles N80 in CO2-haltigem Schichtwasser von Erdölfeldern in Ab- und Anwesenheit von Essigsäure
Corrosion Science ; 53 , 10 ; 3156-3165
2011
10 Seiten, 10 Bilder, 2 Tabellen, 42 Quellen
Article (Journal)
English
Rohrstahl , kohlenstoffreicher Stahl , Erdöllagerstätte , Pipeline , Grundwasser , Gewichtsverlust , Temperatureinfluss , Konzentrationseinfluss , Kohlendioxid , Essigsäure , Korrosionsprodukt , Eisencarbonat , Lochfraßkorrosion , Polarisationskurve , Salzgehalt , korrosive Substanz , Korrosionsgeschwindigkeit , elektrochemische Impedanzspektrometrie , Röntgenbeugung
Optimization of CO2 corrosion for API X70 steel on acetic acid contained environment
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