Role of acetic in CO2 top of the line corrosion of carbon steel
Amri, J.
,
Gulbrandsen, E.
,
Nogueira, R.P.
Corrosion 2011, Houston, Tex., 2011-03-12--03-17. Paper 11329
- Publ. year
- 2011
- Publ. type
- paper
- Abstract
- Based on laboratory and field data, the presence of acetic acid (HAc) in oilfield brines has been found to enhance both the occurrence and the rate of localized CO2 Top-of-Line Corrosion (TLC). However, the fundamental role of this organic compound in CO2 corrosion is still a controversial topic, particularly concerning its electroactive participation in the overall cathodic mechanism. In an attempt to assess this issue, the effect of HAc on the kinetic behaviour of carbon steel was addressed in this study by means of both electrochemical measurements and electron microscopy examinations. Whether HAc acts as a specific cathodic reactant or just as a proton source or both was the central idea of the present work. The results are further discussed in terms of repercussions on TLC corrosion. ©NACE International. All rights reserved. Paper Number 11329 reproduced with permission from CORROSION 2011 Annual Conference and Exhibition, San Antonio, Texas. http://www.nace.org
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