TY - GEN
T1 - Corrosion rate prediction of low carbon steel in brines containing CO2 and H2S
AU - Medina, José M.H.
AU - Godínez, Jesús G.S.
AU - González, Jorge L.V.
PY - 2010
Y1 - 2010
N2 - In this work, corrosion rate prediction models of type INC-516-G70 carbon steel in media that simulate the environment of water-oil separating tanks, the corrosion rate was determined by the electrochemical technique of linear polarization, as a function of temperature, pH and CO2 and H2S contents in NACE-ID-182 and NACE-ID-196 brines, with and without, O2. In preliminary tests, the separated effect of temperature and pH on the corrosion rate was determined, as well as the effect of a layer of corrosion products on the metallic surface and the content of O2 in the brine were evaluated and a model was obtained for the prediction of the corrosion rate as a function of temperature and pH simultaneously, in brines with and without, O2 and surfaces without corrosion products. Furthermore, two corrosion rate prediction models were obtained one as a function of temperature and CO2 pressure simultaneously, in brines without O2 and surfaces with corrosion products, finally other as a function of temperature and CO2 pressure and H2S concentration simultaneously, in brines without O2 and surfaces with corrosion products. The validation of models was done by comparison with models reported in the literature, commercial corrosion predicting software and data of corrosion rate measurements obtained from direct inspection of in-service separator tanks.
AB - In this work, corrosion rate prediction models of type INC-516-G70 carbon steel in media that simulate the environment of water-oil separating tanks, the corrosion rate was determined by the electrochemical technique of linear polarization, as a function of temperature, pH and CO2 and H2S contents in NACE-ID-182 and NACE-ID-196 brines, with and without, O2. In preliminary tests, the separated effect of temperature and pH on the corrosion rate was determined, as well as the effect of a layer of corrosion products on the metallic surface and the content of O2 in the brine were evaluated and a model was obtained for the prediction of the corrosion rate as a function of temperature and pH simultaneously, in brines with and without, O2 and surfaces without corrosion products. Furthermore, two corrosion rate prediction models were obtained one as a function of temperature and CO2 pressure simultaneously, in brines without O2 and surfaces with corrosion products, finally other as a function of temperature and CO2 pressure and H2S concentration simultaneously, in brines without O2 and surfaces with corrosion products. The validation of models was done by comparison with models reported in the literature, commercial corrosion predicting software and data of corrosion rate measurements obtained from direct inspection of in-service separator tanks.
UR - http://www.scopus.com/inward/record.url?scp=79960091218&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:79960091218
SN - 9781617824029
T3 - European Corrosion Congress 2010 - EUROCORR 2010
SP - 2327
BT - European Corrosion Congress 2010 - EUROCORR 2010
T2 - European Corrosion Congress 2010 - EUROCORR 2010
Y2 - 13 September 2010 through 17 September 2010
ER -