Method for making environment protection type stainless steel oil pump

A stainless steel, environment-friendly technology, applied to components, pump components, mechanical equipment, etc. of pumping devices used for elastic fluids, can solve problems such as short service life, achieve increased service life, reduced operating costs, and high production efficiency Effect

Inactive Publication Date: 2003-05-21
牛君
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the short service life of existing oil well pumps, the present invention provides a preparation method of an environmentally friendly stainless steel oil well pump, which can eliminate the corrosion problem of oil well pumps and prolong the service life of oil well pumps

Method used

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Embodiment Construction

[0007] The present invention will be further described below:

[0008] The preparation method of the environment-friendly stainless steel oil well pump is to select martensitic stainless steel as the material of the oil well pump barrel, and the grade of the martensitic stainless steel material can be one of 3Cr13Mo, 9Cr18Mo, 7Cr17, 8Cr17 or 11Cr17, after cold drawing , material breaking, normalizing treatment, induction heating surface quenching, straightening, flaw detection inspection, fine boring and other processes, before the straightening process, carry out reprocessing according to the following steps: normalizing treatment, that is, at a temperature of 800 ~ 930 ℃ Normalizing treatment under low temperature for 3-4 hours, slow cooling to 600-750°C and rapid cooling, which is a pre-heat treatment to improve the wear resistance of the pump barrel; induction heating surface quenching treatment, that is, at a temperature of 840-1070°C, induction The gap between the device...

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Abstract

The preparation method of environment-protecting type stainless steel oil well pump is characterized by that it selects and uses stainless steel as raw material for making said pump, and before alignment procedure it adopts the following steps to make treatment, including: normalizing treatment for 3-4 hr. at 800-930 deg.c; induction heating surface hardening treatment, under the condition of that temp. is 840-1070 deg.c, gap between inducer and inner surface of pump cylinder is 2-2.5 mm, inducer moving speed is 2-8 mm / s and rotating speed of pump cylinder is 50-100 rpm utilizing hardening machine to drive pump cylinder and make it rotate, moving inducer to implement heating continuously hardening treatment; utilizing 20-30 deg.c hardening solution to make spray-cooling treatment; and using tempering furnace to make tempering treatment at 150-230 deg.c and heat-insulating for 30-60 min.

Description

Technical field: [0001] The invention relates to a preparation method of an oil well pump used in the field of oil field development, and belongs to a preparation method of an environment-friendly stainless steel oil well pump. Background technique: [0002] At present, with the gradual deepening of oilfield development, especially since polymer flooding and ASP flooding, the chemical composition is also relatively complex, and the corrosion phenomenon of equipment used in oilfields is becoming more and more obvious. Among them, the oil well pump is one of the necessary equipment for oil production. The existing pump cylinder is made of carbon structural steel or alloy steel after chemical heat treatment. The corrosion phenomenon is serious and the service life is reduced, generally 1-2 years. Most of the measures taken are to carry out chrome plating on the inner surface of the pump barrel. Although it has certain wear resistance and corrosion resistance, the manufacturing ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): E21B43/00F04B53/16
Inventor牛君刘文波刘海庆
Owner牛君