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Inner corrosion-resistant high wear-resistant powdery coating specifically for oil field producing well pipe

A technology of powder coatings and oil production wells, applied in anti-corrosion coatings, fire-proof coatings, anti-fouling/underwater coatings, etc., can solve problems affecting crude oil output, oil production well pipe damage, and impact on oil production costs, etc., to achieve ultra-high durability Abrasion performance and high temperature resistance, improvement of hardness and wear resistance, effect of improvement of wear resistance and temperature resistance

Inactive Publication Date: 2017-07-25
孟鋆辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that the sucker rod rubs for a long time during the oil production process of the current oil production well pipe in the oil field, which causes eccentric wear and grooves, which damages the oil production well pipe, affects the output of crude oil, and greatly affects the cost of oil production. Special internal anti-corrosion and strong wear-resistant powder coating for oil production well pipes in various oil fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, at first epoxy resin 55Kg, silicone resin 25Kg, polyester resin 10Kg, phenolic resin 15Kg, curing agent 18Kg, leveling agent 8Kg, brightening agent 4Kg, imidazole 1Kg, benzoin 1Kg, titanium dioxide 15Kg, boron carbide 25Kg, manganese zinc ferrite powder 15Kg, graphene 0.05Kg, wollastonite powder 40Kg, sericite 3Kg and carbon black 2Kg high-speed mixing, melt polymerization reaction extrusion, colloid tableting, air-cooled crushing, milling, sieving A special internal anti-corrosion and strong wear-resistant powder coating for oil production well pipes has been prepared. Electrostatic spraying sample inspection results: melting and solidification time: 3min (230°C), coating surface is smooth, uniform in color, no bubbles and no pinholes; adhesion: level 1; 15J impact resistance: no pinholes; 24h cathodic stripping: 3.0mm , Abrasion resistance (GB / T1769-97): ≤5mg meets the quality requirements.

Embodiment 2

[0018] Embodiment 2, at first epoxy resin 55Kg, silicone resin 25Kg, polyester resin 10Kg, phenolic resin 10Kg, curing agent 15Kg, leveling agent 8Kg, brightening agent 4Kg, imidazole 1Kg, benzoin 1Kg, titanium dioxide 10Kg, tungsten carbide 10Kg, manganese zinc ferrite powder 30Kg, graphene 0.05Kg, wollastonite powder 35Kg, sericite 3Kg and carbon black Kg high-speed mixing, melt polymerization reaction extrusion, colloid tableting, air-cooled crushing, milling, sieving A special internal anti-corrosion and strong wear-resistant powder coating for oil production well pipes has been prepared. Electrostatic spraying sample inspection results: curing time: (230°C) 3min; coating appearance: smooth surface, uniform color, no bubbles and no pinholes; adhesion: level 1; 15J impact resistance: no pinholes; 24h cathodic stripping: 5.0 mm; wear resistance (GB / T1769-97): ≤5mg meets the quality requirements.

Embodiment 3

[0019] Embodiment 3, at first epoxy resin 50Kg, silicone resin 25Kg, polyester resin 10Kg, phenolic resin 15Kg, curing agent 20Kg, leveling agent 6Kg, brightening agent 5Kg, imidazole 1Kg, benzoin 1Kg, titanium dioxide 15Kg, zirconium carbide 25Kg, manganese zinc ferrite powder 25Kg, graphene 0.03Kg and wollastonite powder 35Kg high-speed mixing, melt polymerization reaction extrusion, colloid tableting, air-cooled crushing, powder grinding, sub-sieving to produce oil field production well pipe special inner Anti-corrosion strong wear-resistant powder coating. Electrostatically sprayed samples, test results: curing time: (230°C) 3min; coating appearance: smooth surface, uniform color, no bubbles and no pinholes; adhesion: level 1; 15J impact resistance: no cracks; 24h cathodic stripping: 3.0mm; wear resistance (GB / T1769-97): ≤7mg meets the quality requirements.

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Abstract

The invention discloses an inner corrosion-resistant high wear-resistant powdery coating specifically for an oil field producing well pipe. The coating is prepared from 50 to 60 parts by weight of epoxy resin, 25 to 35 parts by weight of silicone resin, 15 to 20 parts by weight of phenolic resin, 10 to 15 parts by weight of polyester resin, 18 to 22 parts by weight of a phenol polymer curing agent, 5 to 10 parts by weight of an acrylate copolymer leveling agent, 2 to 5 parts by weight of a methacrylate copolymer sensitizer, 0.5 to 2 parts by weight of imidazole, 0.5 to 2 parts by weight of defoamer benzoin, 10 to 15 parts by weight of titanium dioxide, 40 to 50 parts by weight of a ultra-wear resistant material, 3 to 5 parts by weight of graphene and 25 to 40 parts by weight of wollastonite powder. The inner corrosion-resistant high wear-resistant powdery coating has excellent wear resistance and high temperature resistance, has a flat and smooth surface, prevents wax deposition and scaling and is a good oil field pipe inner wall corrosion-resistant coating.

Description

[0001] Technical field: [0002] The invention relates to the technical field of oil production in oil fields, in particular to a special internal anti-corrosion strong wear-resistant powder coating for oil production well pipes in oil fields. [0003] Background technique: [0004] At present, with the impact of international oil prices, the economic benefits of various domestic oil fields are directly affected greatly, and more and more attention is paid to the cost of oil production. In particular, the prolongation of the service life of oil production well pipes has attracted much attention, because it is the main factor affecting the cost of oil production. The prolongation of the service life of the oil production well pipe mainly depends on the quality of the anti-corrosion coating on the inner wall of the oil production well pipe. performance. The high-strength wear resistance of the coating can prevent the continuous friction of the sucker rod, the eccentric wear of ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D183/04C09D167/00C09D161/06C09D5/08C09D5/16C09D7/12
CPCC09D163/00C08K2201/014C08L2201/08C08L2203/18C08L2205/035C09D5/08C09D5/16C09D5/18C09D7/61C09D7/63C09D7/65C08L83/04C08L67/00C08L61/06C08K13/02C08K2003/2241C08K3/34C08K3/04C08K5/3445C08K3/38C08K3/14
Inventor 孟鋆辉石建华朱继刚
Owner 孟鋆辉
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