Aluminum alloy, preparation method thereof and seamless pipe for oil drilling rod

By adopting a new aluminum alloy, combined with the technical means of Al-Y-La first intermediate alloy and Al-CNT second intermediate alloy, the problems of high self-weight, low corrosion resistance and high cost caused by the existing petroleum drilling rod materials are solved, and high mechanical properties, excellent corrosion resistance and low cost effects are achieved.

CN119979991AActive Publication Date: 2025-05-13GUANGZHOU GOLDEN ALUMINUM ALUMINUM
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Patent Information

Application Number
CN202411258223.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-09
Publication Date
2025-05-13
Estimated Expiration
2044-09-09

AI Technical Summary

Technical Problem

The materials of existing oil drilling rods are mainly steel or titanium alloys, which leads to high self-weight, poor corrosion resistance, high transportation costs and short service life. The oil drilling rods made of titanium alloys are extremely costly and difficult to mass production.

Method used

Using a new aluminum alloy, its components include Si, Cu, Mg, Zn, Ti, C, rare earth composition and Al, rare earth elements and carbon nanotubes are introduced through the form of Al-Y-La first intermediate alloy and Al-CNT second intermediate alloy to form a dense mesh structure to enhance the mechanical properties and corrosion resistance of the aluminum alloy.

Benefits of technology

This aluminum alloy has high tensile strength, excellent corrosion resistance and low processing costs. It can effectively replace steel and titanium alloys, extend the service life of petroleum drilling rods, and reduce production costs.

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Abstract

According to the aluminum alloy and the preparation method thereof and the seamless pipe for the oil drilling rod, the aluminum alloy is composed of Si, Cu, Mg, Zn, Ti, C, a rare earth composition and Al, rare earth elements are supplemented into the aluminum alloy in the form of the Al-Y-La first intermediate alloy, the C element is supplemented into the aluminum alloy in the form of the Al-CNT second intermediate alloy, the density of the aluminum alloy can be guaranteed, and meanwhile the strength of the aluminum alloy is improved. The mechanical strength of the aluminum alloy is remarkably improved, the corrosion resistance of the aluminum alloy is effectively improved, in the preparation process of the aluminum alloy, auxiliary metal is subjected to ball milling for many times, on one hand, the contact area between the auxiliary metal and molten aluminum can be effectively increased, the smelting difficulty is reduced, and on the other hand, metal crystal generation can be effectively promoted in the stirring smelting process; and the homogenization degree and the refining degree of all elements are improved, then the tensile property and the corrosion resistance of the aluminum alloy are effectively improved, and after the aluminum alloy is matched with acrylic acid cations to prepare the seamless pipe for the oil drilling rod, the service life of the oil drilling rod can be effectively prolonged.
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Citation Information

Patent Citations

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  • Omitted

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