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Characterization of Corrosion Scales on Fe-13Cr Stainless Steel

Published online by Cambridge University Press:  02 July 2020

S. Subramanian ,
S. Ling  and
T. A. Ramanarayanan
S. Subramanian
Affiliation:
Corporate Research Laboratories, Exxon Research and Engineering, Annandale, NJ, 08801
S. Ling
Affiliation:
Corporate Research Laboratories, Exxon Research and Engineering, Annandale, NJ, 08801
T. A. Ramanarayanan
Affiliation:
Corporate Research Laboratories, Exxon Research and Engineering, Annandale, NJ, 08801
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Extract

Fe-13Cr stainless steel is a corrosion resistant alloy (CRA) that is widely used in oil and gas production for equipment such as tubes in wells. The high temperature, high CO2 and H2S partial pressures of typical production environments and the significant amounts of Cl- containing water that is produced along with the hydrocarbons affects the corrosion processes. Fe-13Cr is used for tubes since it exhibits passivity and low corrosion rates in production environments. But, during production operations, it is often necessary to pump strong acids into the underground rock formation through the tubes to stimulate the field and increase productivity. This is done in order to dissolve deposits that clog pores in the rock formation, thus improving permeability and facilitating the flow of hydrocarbons. This is expected to significantly degrade the passivity and lead to increased corrosion. Therefore, there is a concern about the corrosion rate during the operation and the rate at which the alloy repassivates when production is resumed.

Type
Metals and Alloys
Information
Microscopy and Microanalysis , Volume 4 , Issue S2: Proceedings: Microscopy & Microanalysis '98, Microscopy Society of America 56th Annual Meeting, Microbeam Analysis Society 32nd Annual Meeting, Atlanta, Georgia July 12-16, 1998 , July 1998 , pp. 542 - 543
Copyright
Copyright © Microscopy Society of America

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References

References:

1.Huzinga, S. and Liek, W. E., Corrosion, Vol.50, No.7, 1994Google Scholar
2.Lancaster, K.R., Cassidy, J.M. and Walker, M.L., Corrosion 93, Paper No.94, 1993Google Scholar