Comparison of 3%-Cr steel and carbon steel corrosion behavior as well tubing materials in CO2–H2S environment

Yudha Pratesa, Vika Rizkia, Nuringtyas Rahwinarni, Johny Wahyuadi Soedarsono

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This study provides two case studies involving carbon steel and 3%-Cr steel exposed to a CO2–H2S environment with a moderate scaling index. The carbon steel tubing show shows pitting and severe corrosion, whereas the 3% chromium steel tubes are undamaged. XRD results showed that the chromium-rich layer did not alter scaling on both tubes. Investigations using SEM and EDS reveal the formation of a dense and compact layer in the 3%-Cr steel, which serves to resist corrosion. In contrast, carbon steel has a porous structure and is easily detachable due to wall shear stress caused by slug movement. In 3%-Cr steel, the EDS analysis reveals a compact layer with a significant number of chromium, which is an indication of a Cr-rich iron oxide layer. Potentiodynamic polarization shows that the anodic curve is shifting, which means that the rate of corrosion is slowing down. This study shows that 3% Cr steel is a good choice for a mixed CO2–H2S environment with a high total dissolved solid (TDS).

Original languageEnglish
Pages (from-to)2871-2884
Number of pages14
JournalJournal of Adhesion Science and Technology
Volume37
Issue number20
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • 3%-Cr steel
  • CO2-H2S
  • corrosion
  • Cr-rich layer
  • well tubing

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