Role of acetic acid in CO2 top of the line corrosion of carbon steel

Jamel Amri, Egil Gulbrandsen, Ricardo P. Nogueira

Research output: Contribution to journalConference articlepeer-review

25 Scopus citations

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.

Original languageBritish English
JournalNACE - International Corrosion Conference Series
StatePublished - 2011
EventCorrosion 2011 - Houston, TX, United States
Duration: 13 Mar 201117 Mar 2011

Keywords

  • Acetic acid
  • CO
  • Corrosion
  • Pipeline steel
  • Top-of-line corrosion

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