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Glass lining glaze, anticorrosive coating in oil field pipeline and preparation method of anticorrosive coating

An internal anti-corrosion layer and glass-lined technology, which is applied in the field of glass-lined glazes, can solve the problems of high sintering temperature, acid and corrosion resistance, impact resistance, and weak substrate adhesion of glass-lined glazes. Effects of weak, enhanced adhesion, and improved brightness

Inactive Publication Date: 2021-02-26
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

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a glass-lined glaze, an anti-corrosion layer in an oil field pipeline and a preparation method thereof, which are used to solve the problem of excessive sintering temperature of the glass-lined glaze in the prior art, and the oil field The anti-corrosion layer in the pipeline glass glaze has acid and corrosion resistance, impact resistance, weak adhesion to the substrate, etc.

Method used

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  • Glass lining glaze, anticorrosive coating in oil field pipeline and preparation method of anticorrosive coating
  • Glass lining glaze, anticorrosive coating in oil field pipeline and preparation method of anticorrosive coating
  • Glass lining glaze, anticorrosive coating in oil field pipeline and preparation method of anticorrosive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] According to the glass-lined glaze shown in Table 1, the anti-corrosion layer in the oilfield pipeline is prepared, and the steps are as follows:

[0056](1) Take by weighing all other components in the glass-lined glaze formula except refractory soil and water-based varnish in proportion, put them into a material mixer and stir, the stirring speed is 600r / min, and the stirring time is 1h, After stirring and mixing evenly, sinter and melt in a muffle furnace to form a glass liquid state. The sintering melting temperature is 1000 ° C, and the sintering and melting time is 4 hours. Mesh sieving, the particle size of the sieved powder is 200 mesh;

[0057] (2) Weigh refractory soil and water-based varnish according to the proportion, add refractory soil and water-based varnish to the sieved powder in step (1), then add 2 parts of ethanol, and stir to form a semi-viscous glass-lined glaze;

[0058] (3) Put the glass-lined glaze prepared in step (2) into the spraying machi...

Embodiment 2

[0060] According to the glass-lined glaze shown in Table 1, the anti-corrosion layer in the oilfield pipeline is prepared, and the steps are as follows:

[0061] (1) Take by weighing all other components except refractory soil and water-based varnish in the glass-lined glaze formula according to the proportion, put them into a material mixer and stir, the stirring speed is 300r / min, and the stirring time is 2h, After stirring and mixing evenly, sinter and melt in a muffle furnace to form a glass liquid state. The sintering melting temperature is 1100°C, and the sintering and melting time is 2 hours. Mesh sieving, the particle size of the sieved powder is 100 mesh;

[0062] (2) Weigh refractory soil and water-based varnish according to the proportion, add refractory soil and water-based varnish to the sieved powder in step (1), then add 3 parts of ethanol, and stir to form a semi-viscous glass-lined glaze;

[0063] (3) Put the glass-lined glaze prepared in step (2) into the s...

Embodiment 3

[0065] According to the glass-lined glaze shown in Table 1, the anti-corrosion layer in the oilfield pipeline is prepared, and the steps are as follows:

[0066] (1) Weigh all other components in the glass-lined glaze formula except refractory soil and water-based varnish according to the proportion, put them into a material mixer for stirring, the stirring speed is 500r / min, and the stirring time is 1.5h , after stirring and mixing evenly, sintering and melting in a muffle furnace into a glass liquid state, the sintering melting temperature is 1200 ℃, and the sintering melting time is 1.5 hours, then water quenching into blocks, ball milling into powder, and the powder is used Screening, the particle size of the powder after screening is 150 mesh;

[0067] (2) Weigh the refractory soil and water-based varnish in proportion, add the refractory soil and water-based varnish to the sieved powder in step (1), then add 1 part of ethanol, and stir to form a semi-viscous glass-lined...

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Abstract

The invention belongs to the technical field of glass lining glaze, and particularly discloses glass lining glaze, an anticorrosive coating in an oil field pipeline and a preparation method of the anticorrosive coating. The glass lining glaze comprises the following components in parts by weight, 45-55 parts of SiO2, 2.5-4 parts of B2O3, 3-6 parts of Al2O3, 0.5-2 parts of Li2CO3, 2.5-5 parts of Na2CO3, 5-8 parts of CaO, 1.5-5 parts of Fe2O3, 2-4 parts of CuO, 1.5-3 parts of Co3O4, 1-3 parts of Ni2O3, 1.5-4 parts of CaF2, 3-5 parts of TiO2, 1-2.5 parts of ZrO2, 2-5 parts of ZnO, 2-5 parts of SnO2, 1.5-5 parts of MgCO3, 1.5-3.5 parts of SrO, 2-3 parts of CeO2, 2-5 parts of BaCO3, 3-6 parts of refractory soil and 1-2 parts of water-based varnish. The glass lining glaze is subjected to enameling melting, water quenching blocking, ball milling into powder, slurrying, spraying on the inner surface of the oil field pipeline, enameling and sintering to prepare the anticorrosive coating. The glass lining glaze disclosed by the invention is low in sintering temperature, and the prepared coating is good in acid resistance, impact strength, wear resistance and the like, and is suitable for being used as an inner anticorrosive coating of an oil field pipeline.

Description

technical field [0001] The invention relates to the field of glass-lined glaze, mainly relates to the technical field of internal anti-corrosion of metal pipelines in oil fields, in particular to a glass-lined glaze, an internal anti-corrosion layer of oil field pipelines and a preparation method thereof. Background technique [0002] Oilfield metal pipelines often use glass-lined glaze as the internal anti-corrosion layer, but the glass-lined anti-corrosion layer currently used for one-time firing has weak impact resistance, is not easy to withstand collisions and impacts, and has weak acid and corrosion resistance, which cannot meet the needs of oil fields. Metal pipelines work in strong acid gas conditions for a long time; at the same time, because of the existence of alloy elements in the base steel pipe, it is not conducive to the adhesion between the enamel layer and the steel. If the metal pipeline in the oil field is used for a long time, the glass glaze anti-corrosio...

Claims

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Application Information

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IPC IPC(8): C03C8/00C23D5/00C23D5/02
CPCC03C8/00C23D5/005C23D5/02
Inventor 陶佳栋刘晶王纲缐芳曹付军
Owner SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD
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