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Wear-resistant and corrosion-resistant petroleum pipeline and preparation method thereof

An oil pipeline and anti-corrosion technology, which is applied in the direction of pipeline protection, pipeline damage/wear prevention, pipeline anticorrosion/rust protection, etc., can solve the problems of shortening the mission life of pipe fittings, public and environmental hazards, oil pipeline wear, etc., and achieve reduction Adhesion and deposition, improved hydrophobicity, good sealing effect

Active Publication Date: 2022-01-04
SHANDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical properties of the steel pipe are relatively active, which makes the steel pipe easy to be corroded by the oil production fluid, and the hardness of the steel pipe is low, and it is easy to be worn, thereby shortening the service life of the pipe fittings, making the oil pipeline prone to wear and corrosion, and even causing Leakage after perforation, causing hazards to the public and the environment

Method used

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  • Wear-resistant and corrosion-resistant petroleum pipeline and preparation method thereof
  • Wear-resistant and corrosion-resistant petroleum pipeline and preparation method thereof
  • Wear-resistant and corrosion-resistant petroleum pipeline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, a wear-resistant and corrosion-resistant petroleum pipeline is produced through the following steps:

[0039] (1) Pretreatment: first spray acetone solution on the surface of the inner wall of the steel pipe body to remove the oil on the inner surface; then use an inner hole sandblasting gun to perform sandblasting and coarsening treatment on the inner wall of the steel pipe body. The pressure is 0.6MPa, the sandblasting distance is 150 mm, and the sandblasting effect is better if there is no oxide layer and rust on the inner wall surface of the pipeline. Sandblasting roughening can remove the oxide layer and rust on the inner surface of the steel pipe body, reveal a bright and clean inner surface, retain the roughness of sandblasting, and provide a good rough surface for coating adhesion. After sandblasting, the roughness of the inner surface is Between 5μm;

[0040] (2) Fixing the pipe body: Immediately fix the steel pipe body treated in step (1) ...

Embodiment 2

[0048] The differences between this embodiment and Embodiment 1 are:

[0049] In step (1), the roughness of the inner surface after sandblasting is between 4 μm;

[0050] In steps (3) to (5) and (7), after each spraying cycle, the inner hole spray gun moves 10mm to the other end along the axial direction of the steel pipe body,

[0051] In step (6), the stirring speed is 150 r / min.

[0052] All the other are the same as embodiment one.

Embodiment 3

[0054] The differences between this embodiment and Embodiment 1 are:

[0055] In step (1), the roughness of the inner surface after sandblasting is between 6 μm;

[0056] In steps (3)-(5) and (7), after each round of spraying, the inner hole spray gun moves 15mm to the other end along the axial direction of the steel pipe body,

[0057] In step (6), the stirring speed is 200 r / min.

[0058] All the other are the same as embodiment one.

[0059] Prepared by the above method as figure 1 The wear-resistant and corrosion-resistant petroleum pipe shown is specifically that the inner wall of the steel pipe body 1 is sequentially provided with a NiCrAlY layer 2, a first ceramic layer 3, a second ceramic layer 4 and a polytetrafluoroethylene layer 5 from the outside to the inside. The first ceramic layer 3 and the second ceramic layer 4 are made of Al with a particle size of 32-38 μm and an average particle size of 35 μm. 2 o 3 -13%TiO 2 Composed of particles, the porosity of th...

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Abstract

The invention discloses a wear-resistant and corrosion-resistant petroleum pipeline and a preparation method thereof, and belongs to the technical field of petroleum pipelines. The wear-resistant and corrosion-resistant petroleum pipeline comprises a steel pipe body, and is characterized in that a NiCrAlY layer, a first ceramic layer, a second ceramic layer and a polytetrafluoroethylene layer are sequentially arranged on the inner wall of the steel pipe body from outside to inside; and the first ceramic layer and the second ceramic layer are composed of Al2O3-13% TiO2 particles with the particle size of 32-38 microns, the porosity of the first ceramic layer is smaller than or equal to 4%, and the porosity of the second ceramic layer is larger than or equal to 15% and smaller than or equal to 20%. The first ceramic layer in the pipe has the characteristics of high hardness and compactness, liquid in the pipe can be blocked, the wear resistance and corrosion resistance of the pipe are improved, the second ceramic layer sintered on the first ceramic layer is looser than the first ceramic layer, and on one hand, the second ceramic layer has very high bonding strength with the first ceramic layer, and on the other hand, the bonding strength with the polytetrafluoroethylene layer is improved, and a micro-nano binary roughness structure is formed with polytetrafluoroethylene particles, so that a micro-nano structure with hydrophobic characteristics is easy to prepare, the hydrophobicity of the inner wall of the pipe body is improved, and the corrosion resistance is enhanced.

Description

technical field [0001] The invention belongs to the technical field of petroleum pipelines, in particular to a wear-resistant and corrosion-resistant petroleum pipeline and a preparation method thereof. Background technique [0002] Due to their good electrical conductivity, heat dissipation, high strength and easy processing, metal materials are often made into pipe fittings and widely used in various fields, especially in oil fields. Among them, the steel pipe has high cost performance due to its easy material acquisition and mature production technology. But with the continuous extraction of oil, CO 2 The application of oil flooding technology and high-pressure steam flooding technology has made the oil contain corrosive media such as dissolved oxygen, carbon dioxide, sulfide, and chloride ions, as well as a large amount of mud and sand, which has changed from the original high oil content to the current high water impurity content. high. The chemical properties of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14F16L57/02F16L57/06F16L58/08F16L58/10C23C4/073C23C4/11C23C4/134C23C4/16
CPCF16L9/14F16L57/02F16L57/06F16L58/08F16L58/1027C23C4/073C23C4/11C23C4/134C23C4/16Y02A20/20
Inventor 王宁刘可峰李丽刘宪福白雪
Owner SHANDONG UNIV OF TECH
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