E3S Web of Conf.
Volume 225, 2021II International Conference “Corrosion in the Oil & Gas Industry” 2020
|Number of page(s)||4|
|Section||Well Construction and Operation|
|Published online||05 January 2021|
Evaluation of Corrosion Resistance of Nickel-based Alloy EP718 for use in Hydrogen Sulphide Containing Environment
Peter the Great Saint Petersburg Polytechnic University, 195427, Polytechnicheskaya 29, Saint Petersburg, Russia
* Corresponding author: firstname.lastname@example.org
Nickel-based alloys cover a wide range of oil and gas applications. Alloy EP718 is used as an analogue of alloy 718. The corrosion resistance of EP718 has been determined in severe environmental conditions of NACE level VI over 3 months (175°С, PCO2 = 3.5 MPa, PH2S = 3.5 MPa, pH 3.5, 20% NaCl). The effects of heat treatment on the corrosion rate were studied. The results indicate that the corrosion rate of EP718 in a simulated environment is less than 0.01 mm per year. Stress corrosion cracking could be observed in low quality production and incorrect heat treatment.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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