Laser-cladded oil well pipe subjected to multicomponent cementation compound treatment and production process and device

A technology of laser cladding and multi-component co-infiltration, which is applied in the direction of metal material coating process, drill pipe, casing, etc., can solve the problems of lower production efficiency, poor wear resistance, and increased production costs, so as to improve wear resistance and Anti-corrosion, improved service life, and remarkable benefits

Active Publication Date: 2013-05-22
梅河口市弘业无缝钢管有限公司
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Problems solved by technology

[0003] The main purpose of the present invention is to solve the problems of poor wear resistance and poor corrosion resistance of oil well pipes used in the existing petroleum industry, resulting in increased production costs and reduced pr

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  • Laser-cladded oil well pipe subjected to multicomponent cementation compound treatment and production process and device
  • Laser-cladded oil well pipe subjected to multicomponent cementation compound treatment and production process and device

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Embodiment Construction

[0038] see figure 1 , figure 2 Shown:

[0039] The oil well pipe 2 treated by laser cladding multi-component co-infiltration composite treatment according to the present invention has a laser cladding heat treatment layer 1 on the surface multi-component co-infiltration composite layer. Such laser modification technology performs laser composite treatment on the inner surface of the oil well pipe 2 of the corresponding steel grade through C, N, O, S multi-component co-infiltration to obtain the corresponding surface structure of the oil well pipe 2, which can improve the mechanical properties of the inner surface of the oil well pipe 2 , metallurgical properties, and physical properties, thereby improving a series of properties such as wear resistance, corrosion resistance, and fatigue resistance of the oil well pipe 2.

[0040] The production process of the oil well pipe treated by laser cladding multi-component co-infiltration composite treatment according to the present ...

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Abstract

The invention discloses a laser-cladded oil well pipe subjected to multicomponent cementation compound treatment and a production process and device. A laser cladded heat treatment layer is arranged on a surface multicomponent cementation compound layer of the oil well pipe. The production process comprises the following steps of: step 1. machining a thread structure; step 2. carrying out quenching and tempering treatment; step 3. carrying out polishing treatment; step 4. pre-heating; step 5. carrying out salt bath nitriding treatment; step 6. carrying out salt bath oxidization treatment; step 7. removing salt and washing; step 8. carrying out polishing treatment; step 9. carrying out the salt bath oxidization treatment for the second time; step 10, removing the salt and washing for the second time; step 11. carrying out laser quenching treatment; and step 12. carrying out oil immersing treatment. A device for laser quenching heat treatment is formed by a CO2 laser device, a power meter, an optical shutter, a light guide system, a focusing lens, a reflection lens and a worktable; and the device has the beneficial effects that the service life of the oil well pipe is greatly improved, the cost is low and the benefits are obvious.

Description

technical field [0001] The invention relates to an oil well pipe, a production process and a device for multi-component co-infiltration composite treatment, in particular to an oil well tube, a production process and a device for laser cladding multi-component co-infiltration composite treatment. Background technique [0002] At present, in my country's oil and gas resources, most oil and gas wells contain a large amount of Co 2 、H 2 S and Cl - Ions, these corrosive media are the main cause of oil well pipe corrosion, combined with the combined effect of oil well pipe wear and corrosion, the service life of ordinary oil well pipe is reduced, which greatly increases production costs and reduces production efficiency. During the lifting and lowering operations of the pipe, the sticking phenomenon of the oil well pipe thread is also one of the important reasons that affect the service life of the oil well pipe. As the average well depth of oil and natural gas increases, the ...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23C8/58C21D1/09E21B17/00
Inventor 吕学民
Owner 梅河口市弘业无缝钢管有限公司
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