| Issue |
E3S Web Conf.
Volume 121, 2019
I International Conference “Corrosion in the Oil and Gas Industry”
|
|
|---|---|---|
| Article Number | 04012 | |
| Number of page(s) | 4 | |
| Section | Materials Selection & Design | |
| DOI | https://doi.org/10.1051/e3sconf/201912104012 | |
| Published online | 14 October 2019 | |
Silver braze corrosion in H2S environment: life assessment and methods of preventing
1
Weatherford, 195251 Saint Petersburg, Russia
2
Weatherford, 11909 Houston, USA
* Corresponding author: aleksey.shakhmatov2@weatherford.com
Issues of using silver as the braze material in H2S environment are discussed due to environment related sulfidation which cause corrosion penetration and risk of compromising seals. To explore risk and mitigation techniques, static H2S high temperature silver braze corrosion tests were conducted. The results are presented and interpreted by Arrhenius equation approach. The corrosion rate decreased with time due to the formation of Ag2S corrosion product layer. This corrosion product changed the chemical reaction type from mass transfer controlled to diffusion controlled. The environment temperature vs braze joint thickness vs guarantee period relationships are shown and discussed. Additionally, possible protection options connected with metallic and non-metallic coating were investigated.
© The Authors, published by EDP Sciences, 2019
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