How is the ERW pipe casing heat treated?

Posted by zora li on February 24th, 2023

How is the ERW pipe heat treated?

Carburizing, carbonitriding, carbonitriding, boronizing isocarburizing, carbonitriding, boronizing and other general chemical heat treatment of erw shells are multi-parameter single-component, two-component and three-component sub-heat treatment.

In recent years, some new technologies for chemical heat treatment of ERW casing have been developed, such as vacuum chemical heat treatment, fluidized bed chemical heat treatment, ion infiltration metal, ion implantation, laser surface alloying, etc., which can improve the wear resistance and resistance of erw casing corrosive. Wait for performance. The application of rare earths in chemical heat treatment (that is, infiltration of rare earths) can significantly increase the exudation rate, shorten the treatment cycle, and improve the wear resistance and corrosion resistance of the layer, which is a major feature of rare earths. Our country.

In addition, the solution chemical heat treatment of erw casing is also a trend worthy of attention. The nitrogen martensite treatment (N*M treatment) process developed by Huang Jianhong of Inner Mongolia Agricultural Machinery Research Institute has been successfully applied to the production of ERW. casing. ERW casing is used to support oil and gas well wall pipelines to ensure the normal operation of the whole well during drilling and after completion. According to different drilling depths and geological conditions, each well adopts multi-layer casing. After the casing is consolidated with cement, it cannot be reused, unlike oil pipe and drill pipe. It is a one-time consumable material. As a result, casing consumption accounts for more than 70% of all wells. The casing can be divided into: air duct, surface casing and process casing according to the purpose.

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zora li
Joined: August 16th, 2022
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