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Anti-bacterial anti-corrosive coating material for inner wall of oilfield reinjection water pipeline

A technology of oilfield water injection and anti-corrosion coating, which is applied in antifouling/underwater coatings, coatings, epoxy resin coatings, etc. It can solve the problems of increasing medium transportation resistance and pressure, poor adhesion of lining cement mortar, and cement mortar Improve the construction performance, reduce volume shrinkage, and improve impermeability

Inactive Publication Date: 2012-02-01
SINOPEC PETROLEUM ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lining cement mortar has poor adhesion, which is easy to crack and fall off, damage the delivery pump or block the filter
Because the surface of the cement mortar layer is rough and the friction is large, the resistance and pressure of the medium transportation are increased, which affects the flow rate of the liquid.
At the same time, due to the thicker cement mortar lining, the displacement of the pipeline is actually reduced. For example, the cement mortar lining of Φ114×9mm reduces the transportation volume by about 24%.
If you want to deliver the same delivery volume, you have to increase the diameter of the pipe, thus wasting about 30% of steel

Method used

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  • Anti-bacterial anti-corrosive coating material for inner wall of oilfield reinjection water pipeline

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A bacteriostatic and anticorrosive coating material for the inner wall of an oilfield reinjection pipeline, comprising a main agent system and a curing agent system, and is calculated in parts by weight:

[0029] (I) The components in the main agent system are: film-forming resin: bisphenol A epoxy resin 50; tetrafluoroethylene resin 4, modified toughening agent Lite2020 10; defoamer: BYK 057 1.0; Leveling agent: BYK's 3777 1.0; Nano filler: ceramic powder 7 with a particle size of less than 100 nanometers; Inorganic organic hybrid bactericide 1.9; Pigment filler 30.

[0030] (II) The components in the curing agent system are: curing agent: cashew nut shell liquid modified phenalkamine 94; organic chelating agent: organic phosphite 2. Rust conversion agent: Diphenylguanidine chromate 4.

[0031] When in use, mix the two components with a weight ratio of 4:1 and mix them thoroughly, and mature for 10-20 minutes, preferably about 15 minutes, and then they can be scraped or high...

Embodiment 2

[0034] A bacteriostatic and anticorrosive coating material for the inner wall of an oilfield reinjection pipeline, comprising a main agent system and a curing agent system, and is calculated in parts by weight:

[0035] (I) The components in the main agent system are: film-forming resin: bisphenol A epoxy resin 45; modified toughener: Cardolite lite2020 15; defoamer: BYK’s 057 1.5; leveling 3777 1.6 from BYK; Nano filler: barium sulfate 7 with a particle size of less than 100 nanometers; ceramic powder 5 with a particle size of less than 100 nanometers; tetrafluoroethylene resin 3.

[0036] (II) The components in the curing agent system are: curing agent: cashew nut shell liquid modified phenalkamine 93; organic chelating agent: organic phosphite 3; corrosion conversion agent: diphenylguanidine chromate 4.

[0037] When in use, mix the two components with a weight ratio of 1:1 and stir them thoroughly, and mature for 10-20 minutes, preferably about 15 minutes, and then they can be sc...

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Abstract

The invention relates to an anti-bacterial anti-corrosive coating material for the inner wall of an oilfield reinjection water pipeline, comprising solvent-free organic fluorine modified epoxy resin as base material and hybridized organic-inorganic fungicide and filling materials, etc. The coating material has good anti-bacterial performance and anti-corrosive performance, and has good self-cleaning and antisetoff performance. The coating material has good workability, and can be used on wet metal surface. The coating material has fast drying speed, good thoughness and rigidity, good adhesiveforce with the base coat,and flat and smooth film. The coating material has good bactericidal effect on sulfate reducing bacteria, iron bacteria and the like, good broad-spectrum bactericidal action,fast sterilization speed, high sterilization efficiency, no pollution to the environment, and no toxicity to human body.Thereby, the coating material has a wide application prospect.

Description

1. Technical Field [0001] The invention relates to a coating material, in particular to a bacteriostatic and anticorrosive coating material for the inner wall of an oil field reinjection water pipeline. 2. Background technology [0002] Steel is the most used and widely used metal in human life. It can be said that without steel, there would be no development and civilization of the current society. However, the annual economic loss of steel due to corrosion is extremely serious. According to foreign statistics, the economic loss caused by corrosion in many countries is as high as 3% to 4% of the national economic output value. Steel will be corroded to different degrees in different environments. In the process of oilfield exploitation, with the increase of oilfield exploitation time, the quality of water injection continues to deteriorate. Sulfate reducing bacteria, iron bacteria, saprophytic bacteria and other microorganisms continue to increase, resulting in The corrosion an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D127/18C09D5/14C09D7/12F16L58/10
Inventor 韩霞李少香祝威刘光烨刘娜孙立水赵海培管善峰王田丽
Owner SINOPEC PETROLEUM ENG DESIGN
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