Impact the sulphur content in Iraqi crude oil on the mechanical properties and corrosion behaviour of carbon steel in various types of API 5L pipelines and ASTM 106 grade B
Petroleum products are vital to the country’s economy and are transported by pipelines. The main goal of this article is to investigate one of the components of crude oil, sulphur, and examine the impact on carbon steel pipes (API 5L [X60, X46, and X42] and A106 pipe) and demonstrate how sulphur con...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2025-03-01
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| Series: | Nonlinear Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nleng-2024-0086 |
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| Summary: | Petroleum products are vital to the country’s economy and are transported by pipelines. The main goal of this article is to investigate one of the components of crude oil, sulphur, and examine the impact on carbon steel pipes (API 5L [X60, X46, and X42] and A106 pipe) and demonstrate how sulphur content affects various types of API 5L XL independently from the other significant factors present in the crude oil. The sulphur has a huge impact on the mechanical characteristics and corrosion resistance of petroleum pipelines. We found that an increase in the sulphur content led to an increase in the corrosion rate (CR) and decreased the mechanical properties. It has been shown that the safest and most economical way to transport crude oil is through pipeline networks for gas and oil. Internal and external corrosions are the primary problems with API 5L and other steel pipelines used in the transportation of oil and gas. The TR-TCXRF (X-ray Fluorescence Sulphur Tester) instrument is used in this study to determine the sulphur content of crude oil. Using weight loss and the Tafel extrapolation method, the CR, corrosion potential, and corrosion current of carbon steel pipes A106 and API 5L (X60, X46, and X42) in four immersion solutions were calculated. Using an optical microscope, scanning electron microscope, and energy dispersive spectroscopy (EDS), the products of corrosion were iron sulphate (Fe2SO4) and iron sulphide (FeS), and iron oxide (Fe2O3); the corrosion properties of the samples were measured morphologically. The results showed that the pipeline CR significantly increases with increasing concentration of sulphur content. X60 pipe was more resistant to corrosion than X46 and X42 in API 5L-type pipes. |
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| ISSN: | 2192-8029 |