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Coating for oil extraction well pipe of electric submersible pump, preparation method and application

A technology for oil production wells and electric submersible pumps, applied in powder coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve problems such as steel pipe corrosion, anti-corrosion coatings are easily corroded, and electric submersible pump wells have large displacement, and achieve good heat resistance Performance and structural stability, slow down the performance of scale wax deposition, and reduce the cost of oil production

Inactive Publication Date: 2019-09-27
SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The electric submersible pump has large displacement, high temperature, and harsh working environment. Especially when the oil production well pipe used is used in the working conditions of high temperature, corrosion, high pressure liquid flow, and rapid pressure change, the anticorrosion on the wall of the oil production well pipe used in the past The coating is easily corroded, the air bubbles fall off, and the protective effect is lost, and the steel pipe that loses the protective coating will be corroded soon
After the oil production well pipe is corroded and damaged, it is often necessary to shut down the well, which not only increases the cost of crude oil for oil production, but also affects the progress of oil production, which is a major problem in oil field construction.

Method used

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  • Coating for oil extraction well pipe of electric submersible pump, preparation method and application
  • Coating for oil extraction well pipe of electric submersible pump, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 40 parts of phenolic epoxy resin (Amanda1168), 20 parts of cycloaliphatic epoxy resin, 20 parts of curing agent, 15 parts of feldspar powder, 10 parts of barium sulfate, 15 parts of mica powder, 30 parts of zirconium dioxide, acrylate leveling agent 1.5 parts (BYK-364P), 1 part of imidazoline, 1 part of defoamer, 2 parts of wetting agent, 0.8 part of phthalocyanine green.

[0046] Put the above-mentioned raw materials in parts by weight into a high-speed crushing mixer, stir for 10 minutes, and put them into a melt extruder to press into tablets with a thickness of 1.5 mm. After air-cooling, crush and grind the powder and pass through a 120-mesh sieve to obtain a finished powder coating .

[0047] The above-mentioned prepared coating is sprayed on the inner wall of the electric submersible pump oil production well pipe, and the specific method is:

[0048] Firstly, the inner surface of the production well pipe is degreased and sandblasted. The grade of derusting treat...

Embodiment 2

[0050] 50 parts of phenolic epoxy resin (CTAB Aradur7255), 25 parts of alicyclic epoxy resin, 25 parts of curing agent, 20 parts of feldspar powder, 5 parts of barium sulfate, 10 parts of mica powder, 30 parts of titanium nitride, acrylate leveling 1.5 parts of agent (BYK-364P), 1.5 parts of imidazoline, 1 part of defoamer, 2 parts of wetting agent, 0.8 parts of bismuth vanadate molybdate yellow.

[0051] Preparation:

[0052] Put the above-mentioned raw materials in parts by weight into a high-speed crushing mixer, stir for 15 minutes, put them into a melt extruder to press into tablets with a thickness of 2mm, and after air cooling, pulverize and grind them through a 120-mesh sieve to obtain a finished powder coating.

[0053] The above-mentioned prepared coating is sprayed on the inner wall of the electric submersible pump oil production well pipe, and the specific method is:

[0054] Firstly, the inner surface of the production well pipe is degreased and sandblasted. The...

Embodiment 3

[0056] 55 parts of phenolic epoxy resin (Araldite GT7255), 30 parts of cycloaliphatic epoxy resin, 28 parts of curing agent, 15 parts of feldspar powder, 10 parts of barium sulfate, 25 parts of mica powder, 65 parts of titanium carbide, acrylate leveling agent 2.5 parts (BYK-366P), 3 parts of 2-isopropylimidazole, 2 parts of defoamer, 2 parts of wetting agent, 2 parts of phthalocyanine blue.

[0057] Preparation:

[0058] Put the above-mentioned raw materials in parts by weight into a high-speed crushing mixer, stir for 20 minutes, put them into a melt extruder to press into tablets with a thickness of 2mm, and after air cooling, pulverize and grind them through a 120-mesh sieve to obtain a finished powder coating.

[0059] The above-mentioned prepared coating is sprayed on the inner wall of the electric submersible pump oil production well pipe, and the specific method is:

[0060] Firstly, the inner surface of the production well pipe is degreased and sandblasted. The leve...

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Abstract

The invention provides an anticorrosive powder coating special for an oil extraction well pipe of an oil field electric submersible pump, a preparation method and application. The powder coating is resistant to high temperature and blistering, is good in anti-corrosion performance, and is especially suitable for the use requirements of the oil extraction well pipe of the electric submersible pump in complicated environmental media. The powder coating is prepared from the following raw materials in parts by weight: 35-60 parts of phenolic epoxy resin, 20-35 parts of alicyclic epoxy resin, 20-35 parts of a curing agent, 15-20 parts of feldspar powder, 5-20 parts of barium sulfate, 10-30 parts of mica powder, 25-65 parts of a high-temperature-resistant and corrosion-resistant material, 0.8-3 parts of an acrylate copolymer leveling agent, 0.5-3 parts of a curing accelerator, 0.5-2 parts of a defoamer, and 1-3 parts of a wetting agent.

Description

technical field [0001] The invention relates to a high-temperature-resistant anti-foaming anti-foaming powder anti-corrosion coating specially used for steel production well pipes of electric submersible pumps in oil fields, a preparation method and application thereof. Background technique [0002] As various domestic oil fields control economic benefits and crude oil costs more carefully, the life cycle of oil production equipment is also a major factor in crude oil cost control. As a consumable, the production well pipe used in the electric submersible pump well has also received attention in its service life. [0003] The electric submersible pump has large displacement, high temperature, and harsh working environment. Especially when the oil production well pipe used is used in the working conditions of high temperature, corrosion, high pressure liquid flow, and rapid pressure change, the anticorrosion on the wall of the oil production well pipe used in the past The co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61C09D5/08C09D5/03B05D3/00B05D3/02B05D5/00B05D7/22
CPCB05D3/002B05D3/0218B05D3/0254B05D5/00B05D7/22C08K2003/2206C08K2003/2244C08L2201/08C08L2205/025C09D5/038C09D5/08C09D5/18C09D163/00C09D7/61C08L63/00C08K3/22C08K3/34C08K3/28C08K3/14
Inventor 王纲井卫国陶佳栋盖洁敏
Owner SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD
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