Nano titanium polymer inner wall anticorrosion oil pipe

A polymer and nano-titanium technology, used in anti-corrosion coatings, coatings, epoxy coatings, etc., can solve the problems of high requirements for construction technology and supporting equipment, insufficient anti-static and anti-penetration capabilities, and achieve construction equipment and technology. Simple, easy to promote, strong anti-penetration effect

Active Publication Date: 2013-09-04
胜利油田金岛实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These products have produced positive effects in oil pipe anticorrosion, but there are still deficiencies in antistatic and anti-penetration capabilities, and there are also defects in the coating process that require high construction technology and supporting equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A nano-titanium polymer inner wall anti-corrosion oil pipe is coated with a 100 μm anti-corrosion layer on the inner wall of the oil pipe by spraying. The material of the anti-corrosion layer is composed of A, B two-component and diluent, and its production process is:

[0019] Novolac epoxy resin (150g) + nano-scale titanium powder (30g) + xylene, n-butanol (20g) → mix and stir → add silicone leveling agent (model BYK-323) (2.5g) → add bentonite to fill (3.5g) → adjust viscosity (apply 4 cups and measure viscosity for 60 seconds) → sieve (1200 mesh) → finished product (component A).

[0020] Curing agent (tetraethylenepentamine 17g) → titanate coupling agent (5g) + butanone (6.5g) → mixing and dispersing (high-speed dispersing machine for 1.5h) → finished product (component B)

[0021] Finally, mix component A and component B with diluent at a ratio of 5:2:1.5.

[0022] The spraying process is as follows: After the inner surface of the pipe body is shot blasted, it i...

Embodiment 2

[0024] A nano-titanium polymer inner wall anti-corrosion oil pipe is coated with a 200 μm anti-corrosion layer on the inner wall of the oil pipe by spraying. The material of the anti-corrosion layer is composed of A, B two-component and diluent, and its production process is:

[0025] Novolac epoxy resin 135g + nano-scale titanium powder 20g + xylene, n-butanol 18g → mix and stir → add silicone leveling agent (model BYK-323) 2g → add bentonite filler 3g → adjust viscosity (apply 4 cups of viscosity Determination for 60 seconds) → sieve 1150 mesh → finished component A.

[0026] Curing agent tetraethylenepentamine 15g → titanate coupling agent 4.5g + methyl ethyl ketone 6.5g → mixing and dispersing (high-speed dispersing machine for 1.5h) → finished component B

[0027] Finally, mix component A and component B with diluent at a ratio of 4.5 : 2 : 1.5.

[0028] The spraying process is as follows: After the inner surface of the pipe body is shot blasted, it is sprayed, and then...

Embodiment 3

[0030] 160 parts by weight of novolak epoxy resin, 40 parts by weight of nano-scale titanium powder, and 30 parts by weight of diluent are mixed and stirred, and then 3 parts by weight of silicone leveling agent and 5 parts by weight of bentonite are added successively. The viscosity is adjusted by the agent, and the component A of the finished product is prepared after passing through a 1300 mesh sieve;

[0031] Then mix and disperse 18 parts by weight of curing agent, 6 parts by weight of titanate coupling agent, and 8 parts by weight of methyl ethyl ketone to prepare component B of the finished product;

[0032] Finally, mix component A and component B with diluent at a ratio of 5.5:2:2.

[0033] The diluent in the above examples is n-butanol and xylene mixed according to 3-4:7.

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Abstract

The invention relates to a nano titanium polymer inner wall anticorrosion oil pipe in the technical field of pipeline corrosion resistance. The technical scheme is as follows: the nano titanium polymer inner wall anticorrosion oil pipe comprises an oil pipe and an anticorrosion layer coated on the inner wall of the oil pipe. The anticorrosion layer is prepared by the following steps of: mixing and stirring 130-160 parts by weight of novolac epoxy resin, 20-40 parts by weight of nano-scale titanium powder and 10-30 parts by weight of diluent; sequentially adding 2-3 parts by weight of organosilicon leveling agent and 3-5 parts by weight of bentonite filler to adjust viscosity; screening with a sieve of 1,100-1,300 meshes to obtain an component A of a finished product; mixing and dispersing 15-18 parts by weight of curing agent, 4-6 parts by weight of titanate coupling agent and 6-8 parts by weight of butanone to obtain a component B of the finished product; and finally blending the component A and the component B by the diluent according to a ratio of (4.5-5.5):2:(1-2). Compared with other anticorrosion products, the product provided by the invention has unique advantages of static resistance, strong permission resistance and the like; and moreover, the construction equipment and technology are simple, and the product is easy to popularize.

Description

technical field [0001] The invention relates to a nano-titanium polymer inner wall anti-corrosion oil pipe in the technical field of pipeline anti-corrosion, and is especially suitable for oil field water injection well pipelines. Background technique [0002] With the increase of my country's oilfield production time, the water quality of injection water continues to deteriorate, and the sulfate redox bacteria gradually increase, resulting in serious corrosion and scaling of downhole pipe strings in oilfields, which have become "persistent problems" that plague injection wells. The survey of my country's Zhongyuan and Shengli Oilfields found that the direct economic losses of pipe strings and pipeline materials caused by corrosion in these two oil fields reached 140 million yuan and 300 million yuan respectively; the replacement of pipe strings and pipelines affected production, resulting in indirect The economic loss amounted to about 1 billion yuan. Corrosion and scaling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/04C09D5/08
Inventor 尤滨清李建军解立红宋丽霞丁永强郑海滨赵庆娥董树叶
Owner 胜利油田金岛实业有限责任公司
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