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Journal of Failure Analysis and Prevention

, Volume 13, Issue 1, pp 98–101 | Cite as

Experimental Study on the Effect of the Water-Cut Conditions on the Performance of L80 Carbon Steel

  • K. Al-Muhanna
  • K. Habib
Technical Article---Peer-Reviewed

Abstract

In the oil production, water and acidic gases, i.e., H2S and CO2, are co-produced with the oil. The acidic gases are known to associate with a variety of corrosion damage to the surface facilities leading to costly failures. Also, the acidic gases cause a reduction in the service life of equipment. Corrosion of API L80 tubular carbon steel in sweet media (in the presence of CO2 gas) was investigated using the linear polarization resistance meter. Experiments using API L80 tubular carbon steel material were carried out in a stagnant flow condition with different ratios of produced water to crude oil at relatively high temperatures (60 °C up to 90 °C). The pressure was about 200 psi (13.8 bar) of CO2, and the experiments were carried out using a high pressure vessel namely an autoclave cell. Under those experimental conditions, results indicated that at a temperature of 60 °C, the corrosion rate for carbon steel L80 increased as water-cut ratio increased. Also, the results showed that at higher temperature than 60 °C, the formation of iron carbonate scale on the surface of the steel was observed to increase. Consequently, the corrosion rate of the L80 carbon steel was observed to decrease.

Keywords

Downhole corrosion Water-cut Corrosion rate break Sweet corrosion Carbon steel LPR meter 

References

  1. 1.
    Kermani, M.B., Harrop, D.: The impact of corrosion on the oil and gas industry. J. SPE Prod. Facil. 8, 186–190 (1996)Google Scholar
  2. 2.
    Sun, Y., Hong, T., Bosch, C.: Carbon dioxide corrosion in wet gas annular flow at elevated temperatures. Corrosion 59, 733–740 (2003)CrossRefGoogle Scholar
  3. 3.
    Nordsveen, M., Nesic, S., Nyborg, R., Stangeland, A.: A Mechanistic model for carbon dioxide corrosion of mild steel in the presence of protective iron carbonate films—part 1: theory and verification. Corrosion 59, 443–456 (2003)CrossRefGoogle Scholar
  4. 4.
    Kermani, M.B., Morshed, A.: Carbon dioxide corrosion in oil and gas production—a compendium. Corrosion 59, 659–683 (2003)CrossRefGoogle Scholar
  5. 5.
    Schmitt, G., Feinen, S.: Effect of anions and cations on the pit initiation in CO2 corrosion of iron and steel. In: Corrosion/2000, Paper No. 1, NACE 2000, HoustonGoogle Scholar
  6. 6.
    Efird, K.D., Jasinski, R.J.: The effect of the crude oil on the corrosion of steel in crude oil/brine production. Corrosion 45, 165–171 (1989)CrossRefGoogle Scholar
  7. 7.
    Martins, F.A., Rodrigues, A.P.C., Reznik, L.Y., de Freitas, D.S., Bott, I.: Temperature effect on API grade steels in CO2 environments. In: EUROCORR 2004, Paper No. 274, NiceGoogle Scholar

Copyright information

© ASM International 2012

Authors and Affiliations

  1. 1.Materials Science Laboratory, Department of Advanced SystemsKuwait Institute for Scientific Research (KISR)SafatKuwait

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