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Electroplated amorphous state nickel-based alloy corrosion-resistant wear-resistant oil pipe

An anti-corrosion and wear-resistant, amorphous nickel technology, applied in the direction of pipeline damage/abrasion prevention, pipeline anti-corrosion/rust protection, drilling pipes, etc., can solve hexavalent chromium environmental pollution, nitriding acid resistance, general wear resistance and other problems, to achieve the effect of low environmental protection treatment cost, good bonding force and good wear resistance

Active Publication Date: 2014-08-13
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

At present, the chromium plating method is widely used in China. The chromium plating method is resistant to acids, alkalis and sulfides, not resistant to salt spray, and has good wear resistance, but hexavalent chromium causes serious environmental pollution.
Nitriding is not acid-resistant, wear-resistant is average, and it also pollutes the environment

Method used

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  • Electroplated amorphous state nickel-based alloy corrosion-resistant wear-resistant oil pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The electroplating process of the oil pipe is as follows: the inner surface of the oil pipe is coated with a layer of amorphous nickel-based alloy anti-corrosion and wear-resistant protective layer. The protective layer has a thickness of 50 μm. The electroplating steps of the protection layer are: degreasing-water washing-pickling-water washing-activation-deionized water cleaning-electroplating-water washing-heat treatment. Treatment in degreasing solution for 10 minutes; pickling is to remove the oxide film in sulfuric acid solution until the original color of the metal is exposed; electroplating is to use nickel alloy plating solution, adjust the pH value to 6 with nickel carbonate, the temperature is 65°C, and the current density is 8A / dm 2 , the electroplating time is 1.5 hours; the heat treatment is 1.5 hours at 300°C.

[0012] Among them, the nickel alloy electroplating solution is composed of raw materials according to the following weight-to-volume ratio: main...

Embodiment 2

[0014] The electroplating process of the oil pipe is as follows: the inner surface of the oil pipe is coated with a layer of amorphous nickel-based alloy anti-corrosion and wear-resistant protective layer. The protective layer has a thickness of 25 μm. The electroplating steps of the protection layer are: degreasing-water washing-pickling-water washing-activation-deionized water cleaning-electroplating-water washing-heat treatment. Treatment in degreasing solution for 5 minutes; pickling is to remove the oxide film in sulfuric acid solution until the original color of the metal is exposed; electroplating is to use nickel alloy plating solution, adjust the pH value to 2 with nickel carbonate, the temperature is 80°C, and the current density is 2A / dm 2 , the electroplating time is 2.5 hours; the heat treatment is kept at 200°C for 2 hours.

[0015] Among them, the nickel alloy electroplating solution is composed of raw materials according to the following weight-volume ratio: m...

Embodiment 3

[0017] The electroplating process of the oil pipe is as follows: the inner surface of the oil pipe is coated with a layer of amorphous nickel-based alloy anti-corrosion and wear-resistant protective layer. The protective layer has a thickness of 35 μm. The electroplating steps of the protection layer are: degreasing-water washing-pickling-water washing-activation-deionized water cleaning-electroplating-water washing-heat treatment. Treatment in degreasing solution for 8 minutes; pickling is to remove the oxide film in sulfuric acid solution until the original color of the metal is exposed; electroplating is to use nickel alloy plating solution, adjust the pH value to 5 with nickel carbonate, the temperature is 75°C, and the current density is 5A / dm 2 , the electroplating time is 2 hours; the heat treatment is kept at 250 °C for 2 hours.

[0018] Among them, the nickel alloy electroplating solution is composed of raw materials according to the following weight-volume ratio: ma...

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Abstract

The invention relates to an electroplated amorphous state nickel-based alloy corrosion-resistant wear-resistant oil pipe, and belongs to the field of oil field oil pipes. The inner surface of the oil pipe is electroplated with an amorphous state nickel-based alloy corrosion-resistant wear-resistant protection layer. The thickness of the protection layer is 20-50 microns. The protection layer is electroplated by the steps of oil removing, water washing, acid washing, water washing, activating, deionized water cleaning, electroplating, water washing and thermal treatment. Treatment is performed in oil removing liquid for 5-10 minutes; in acid washing, an oxide film is removed from a sulfur solution till the natural color of metal is exposed; in electroplating, nickel alloy electroplating liquid is adopted, the PH value is adjusted to 2-6 by using nickel carbonate, the temperature is more than or equal to 60 DEG C, the current density is 2-8 A / dm<2>, and the electroplating time is 2 hours; in thermal treatment, the temperature is kept at 200-300 DEG C for 1.5 hours. The oil pipe has the advantages of high microhardness, resistance to acid and alkali corrosion, high wear resistance and long service life.

Description

technical field [0001] The invention relates to the technical field of oilfield oil pipes, in particular to an electroplated amorphous nickel-based alloy anti-corrosion and wear-resistant oil pipe. Background technique [0002] As most domestic oilfields have been developed in the middle and late stages, the development difficulty has increased, the environmental medium of the oil well has continued to deteriorate, and the well fluid contains CO 2 、H 2 Corrosive media such as sulfur and salt water, as well as impurities such as sand particles, require oil pipes to have higher hardness, wear resistance, and corrosion resistance in such a harsh environment, so as to meet the needs of on-site use. The main failure modes of tubing are wear and corrosion. [0003] At present, the domestic oil pipe inner wall treatment process is mainly chrome plating, nitriding and so on. At present, the chromium plating method is generally used in China. The chromium plating method is resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00C25D3/56C25D7/04F16L57/06F16L58/08
Inventor 尤滨清王亮刘可峰孟明超解立红宋丽霞董树叶燕明亮周藤藤
Owner 胜利油田金岛实业有限责任公司
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