SPE Journal
Volume 14, Number 4, December 2009, pp. 627-633

SPE-114087-PA

Inhibition Performance of a New Series of Mono-/Diamine-Based Corrosion Inhibitors for HCl Solutions

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DOI  More information 10.2118/114087-PA http://dx.doi.org/10.2118/114087-PA

Citation

  • Al-Taq, A.A., Ali, S.A., and Nasr-El-Din, H. 2009. Inhibition Performance of a New Series of Mono-/Diamine-Based Corrosion Inhibitors for HCl Solutions. SPE J.  14 (4): 627-633. SPE-114087-PA. doi: 10.2118/114087-PA.

Discipline Categories

  • 5 Production and Operations

Keywords

  • corrosion inhibitors, acid treatments, amine inhibitors, synthetic inhibitors, corrosion testing

Summary

New mono- and diamine compounds were synthesized from dodecylamine and 1,12-dodacanediamine and evaluated as acid corrosion inhibitors for low-carbon steel. The inhibition behavior of these compounds was examined using gravimetric and electrochemical methods (linear polarization and Tafel plot). Weight-loss tests were conducted in 1M HCl at 60°C for six hours. To simulate acid stimulation treatments, other weight-loss tests were conducted using typical acid stimulation concentrations of 4.1 and 7.7M HCl at 60°C for 2 hours. The effects of corrosion inhibitor type, concentration, and acid concentration were investigated.

Aromatic and multiple bonds substituents introduced to mono- and diamine compounds were found to enhance inhibition performance compared to the starting materials (dodecylamine and 1,12-dodacanediamine). This is attributed to the π-electrons present in aromatic and to polymerization of substituents with multiple bonds. Both dodecylamine derivatives with a triple bond or an aromatic substituent exhibited excellent protection in 4.1M HCl. However, the derivative with a triple bond showed the best protection (98%) at 7.7M HCl. This result is very promising and suggests that this corrosion inhibitor has a good potential to be used in acid stimulation treatments conducted in oil and gas wells.

© 2009. Society of Petroleum Engineers

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History

  • Original manuscript received: 19 March 2008
  • Meeting paper published: 27 May 2008
  • Revised manuscript received: 23 November 2008
  • Manuscript approved: 25 November 2008
  • Published online: 24 September 2009
  • Version of record: 22 December 2009