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Method for manufacturing nickel-based alloy steel coiled tubing

A manufacturing method and alloy steel technology, applied in the field of petroleum engineering, can solve problems such as coiled tubing, manufacturing process limitations, and no one has raised, and achieve excellent stress corrosion cracking resistance and improve salt-alkali corrosion resistance.

Active Publication Date: 2018-12-07
HEBEI HUATONG WIRES & CABLES GRP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no precedent for the use of nickel-based corrosion-resistant alloys in the preparation of coiled tubing in the prior art. On the one hand, there is a technical bias in this field, that is, no one in the field has thought that nickel-based corrosion-resistant alloys can be used to prepare coiled tubing; One aspect is the limitation of the manufacturing process, that is, no one in the field has proposed a process that can be used to prepare nickel-based corrosion-resistant alloy coiled tubing

Method used

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  • Method for manufacturing nickel-based alloy steel coiled tubing
  • Method for manufacturing nickel-based alloy steel coiled tubing
  • Method for manufacturing nickel-based alloy steel coiled tubing

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0033] According to the nickel-based alloy steel coiled tubing of the present application, the percentage content of each component is: Ni: 40-45%, Cr: 20-23%, Mo: 2-3%, Cu: 1.8-2.8%, Mn ≤1.0%, Al≤0.2%, S≤0.02%, Ti:0.7-1.0%, C≤0.04%, Si≤0.45%, the rest are Fe and unavoidable impurities.

[0034] Copper and molybdenum are added to the nickel-based alloy steel of the present application, which has acid and alkali metal corrosion resistance in both oxidizing and reducing environments. The high nickel content gives the alloy effective resistance to stress corrosion cracking. Co...

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Abstract

The invention relates to a method for manufacturing a nickel-based alloy steel coiled tubing. The coiled tubing comprises the following components, by percentage composition, of 40-45% of Ni, 20-23% of Cr, 2-3% of Mo, 1.8-2.8% of Cu, less than or equal to 1.0% of Mn, less than or equal to 0.2% of Al, less than or equal to 0.02% of S, 0.7-1.0% of Ti, less than or equal to 0.04% of C, less than or equal to 0.45% of Si and the balance Fe and inevitable impurities. The manufacturing method comprises the following steps that steel strips are welded, the damage is detected, short-disc steel strips are connected to reach the specified meter number, a strip supply device is used for supplying the steel strips, the supplied steel strips are cleaned by a cleaning device, the steel strips pass through a roller pressing device and a pipe forming device, laser welding and heating, finishing and winding are carried out. According to the method, the improvement is made in multiple aspects such as thecomponents and the production process of the steel strips forming the coiled tubing, strip supply equipment and a welding method, so that the manufactured coiled tubing is high in strength, and moreover, the corrosion resistance of the coiled tubing is also improved.

Description

technical field [0001] The invention relates to a method for manufacturing a nickel-based alloy steel coiled tubing, which is suitable for the technical field of petroleum engineering. Background technique [0002] Nickel-based alloys refer to a class of alloys that have comprehensive properties such as high strength and certain oxidation and corrosion resistance at high temperatures of 650-1000 °C. According to the main performance, it is subdivided into nickel-based heat-resistant alloys, nickel-based corrosion-resistant alloys, nickel-based wear-resistant alloys, nickel-based precision alloys and nickel-based shape memory alloys. The main alloy elements of nickel-based corrosion-resistant alloys are copper, chromium, and molybdenum, which have good comprehensive properties and can resist various acid corrosion and stress corrosion. Nickel-based corrosion-resistant alloys are mainly used in the manufacture of various parts for corrosion-resistant environments such as petr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 段建良上官丰收张书军董健刘祥张雅丽
Owner HEBEI HUATONG WIRES & CABLES GRP CO LTD
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