REAL AND IMAGINARY OBSTACLES OF ALUMINUM ALLOYS APPLICATION IN PETROCHEMICAL INDUSTRY

1 KONDRAT’EV Sergey
Co-authors:
1 SHVETCOV Oleg
Institution:
1 Peter the Great St. Petersburg Polytechnic University, Technology and materials research department, St. Petersburg, Russia, petroprom2013@yandex.ru.
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1481-1488
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
21 views / 8 downloads
Abstract

The study deals with advantages and disadvantages of aluminum alloys application for oil and gas extraction. Aluminum alloy applications in drilling pipes, tapered and casing tubing as well as in raisers to extract hydrocarbons were widely known for a long time. As a result, the limitation and obstacles of aluminum alloys application in the petrochemical industry were brought for reconsideration.The results of alloying systems Al-Cu-Mg and Al-Zn-Mg-Cu application in real field developments and basic problems related to contact corrosion in corrosive environment and high temperatures were studied. The results were received; the examples verifying 2024 and 1953 aluminum alloys temperature stability in the temperature range of 200 - 250 °C during both short-term within 3 - 10 minutes and long-term operation up to 1000 hours at 150 °C in the well environment were presented. The testing results of pilot micro arc oxidation of surface treatment of near-to-fastener pipe area, current treatment isolated contact between an aluminum pipe and steel joint to avoid negative impact on contact corrosion were provided. These data verified the feasibility of 2024 and 1953 alloy pipes compared to steel pipes. Also, aluminum alloys corrosion stability under the real operation conditions was proved. The obtained results showed the aluminum alloy advantages compared to steel prefabricated pipes, and the provided examples illustrated possible techniques to minimize aluminum alloys drawbacks and eliminate imaginary obstacles for further implementing light alloy pipes in the petrochemical industry.

Keywords: Al-Cu-Mg alloying system, Al-Zn-Mg-Cu alloying system, 2024 and 1953 alloys, drill pipe, mechanical and corrosion properties.
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