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Nano coating protective pipe and its coating manufacture process

A nano-coating and protective pipe technology, which is applied in damage protection, pipeline anti-corrosion/rust protection, pipeline protection, etc. It can solve the problem that powder coating and liquid coating cannot be applied in one line, and the pipe diameter and specification change little. Steel pipe coating is prone to pinholes and other problems, achieving excellent high temperature corrosion resistance, eliminating internal stress, and high mechanical properties

Inactive Publication Date: 2008-04-30
白日忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. When producing coated steel pipes, powder coatings and liquid coatings cannot be applied on one line;
[0007] 2. The steel pipe cannot be coated inside and outside the pipe at the same time on one coating line;
[0008] 3. Only steel pipes with little change in diameter and specification can be coated;
[0009] 4. The steel pipe coating is prone to pinholes, uneven coating, peeling off and other quality problems

Method used

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  • Nano coating protective pipe and its coating manufacture process
  • Nano coating protective pipe and its coating manufacture process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Production implementation of Ф73×5.51 anti-scaling water injection pipe

[0097] Choose a liquid epoxy-based ordinary coating with good water resistance as the basic coating, add titanium nano-flakes as a modifier and a coupling agent to prepare a titanium nano-scale basic coating, the thickness of the basic coating is 100 μm, and the functional layer is a liquid epoxy-based ordinary coating. The coating is prepared by adding titanium nanoscale flakes with a thickness of 10-40nm and a radial direction of 0.5-10μm as a modifier and a coupling agent to prepare a titanium nanoscale functional coating. The thickness of the functional layer is 80μm. The nano-coating protective water injection pipe has Good anti-corrosion and anti-scaling functions, used for anti-corrosion and anti-scaling of water injection well pipes.

[0098] Production Process:

[0099] Put the Ф73×5.51 steel pipe on the raw material pipe rack, replace the small sandblasting port, replace the small spray...

Embodiment 2

[0109] Production implementation of Ф139.7×7.72 anti-corrosion oil casing

[0110] Choose powder epoxy-based ordinary coatings with good anti-corrosion properties, add titanium nano-flakes as modifiers and coupling agents, and prepare titanium nano-scale powder base coatings. The thickness of the base coating is 200 μm, and the functional layer is liquid epoxy-based titanium nano-scales Coating, the thickness of the functional layer is 50 μm, the nano-coating protects oil casings with good anti-corrosion and anti-scaling functions, and is used for anti-corrosion and anti-scaling of oil well casings.

[0111] Production Process:

[0112] Put the Ф139.7×7.72 steel pipe on the raw material pipe rack, use a small sandblasting port, use a small spray gun, adjust the distance from the top of the drying furnace to the upper part of the steel pipe to 80-120mm, and finally turn on the automatic or manual control system. The steel pipe will be operated according to the following proced...

Embodiment 3

[0121] Production implementation of Ф630×7 anti-wax (drag reduction) oil transportation and air pipes

[0122] The inner coating of the tube is made of liquid epoxy novolac-based titanium nanoscale coating with good oil resistance as the base layer. The thickness of the base coating is 50 μm. The functional layer is liquid epoxy based wax-proof glass nanoscale coating. The coating is made of modified epoxy powder titanium nano-scale coating with good weather resistance and anti-corrosion performance. It is a combination of base layer and functional layer. The thickness of the outer coating is 500 μm. Excellent anti-corrosion, anti-wax, and drag-reducing functions, used for drag reduction and external anti-corrosion of oil and gas pipelines without wear and corrosion.

[0123] Production Process:

[0124] Put the Ф630×7 steel pipe on the raw material pipe rack, use a large sandblasting port, use a large spray gun, adjust the distance from the top of the drying furnace to the u...

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Abstract

The invention discloses a nanometer coating protective pipe prepared by nanometer squama coating and production technique of coating, wherein, the nanometer coating protective pipe consists of three parts of a pipe body, a basal layer and a function layer. The basal layer is the substrate of the nanometer coating and coated on the surface of the pipe body when contacts with a metal base body. The function layer is the facial layer of the nanometer coating and coated on the surface of the basal layer when the function layer contacts with corrosive medium. The nanometer coating the protective pipe disclosed in the invention changes the surface characteristic of the steel pipe products, and acquires a novel characteristic completely different from the original steel pipe products and enables the products to satisfy the need of people towards hi-tech development. The nanometer coating can provide oil pipe products with good performance in resisting corrosion, paraffin, scale and abrasion, so as to greatly prolong the maintenance period of the pipeline products in oil extracting wells, water injecting wells and conveying pipelines of oil fields.

Description

technical field [0001] The invention belongs to the technical field of surface protection, in particular to a nano-coated protective tube prepared by using nano-scale coating and its coating manufacturing process. Background technique [0002] In the process of oil and gas field extraction and transportation, corrosion, scaling, waxing, and wear are the four major public hazards, which are always accompanied by the whole process. [0003] Corrosion, fouling, waxing and wear of steel pipes are the main factors that cause short service life of steel pipe products used in oil fields, high maintenance costs, and affect production and benefits. For oil production and water injection wells, well drilling costs are high, and some wells are due to corrosion Scaling, wax formation, wear and workover are frequent, and the well shutdown rate is high. To produce more oil and less drilling, the most effective way is to take certain protective measures to effectively reduce the well shutd...

Claims

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Application Information

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IPC IPC(8): F16L58/04
Inventor 白日忠
Owner 白日忠
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