Tungsten-containing and sulfur-corrosion-resistant electroplating solution as well as electroplating method and application thereof

An electroplating solution and sulfur corrosion technology, applied in the sulfur-resistant electroplating solution and the tungsten-containing field, it can solve the problems of coating peeling off and short corrosion resistance time, and achieve the effect of increasing the thickness of the coating, improving the compactness and improving the overall anti-corrosion performance.

Active Publication Date: 2020-12-11
山东音速石油产业技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the thickness of the electroplating layer of the oil field pipe in the above background technology is relatively thin, the corrosion resistance time is short, and the electroplating solution of the middle layer contains Cu and Cl - When ionizing, it is easy to cause the technical problem that the plating layer falls off. A tungsten-containing, sulfur-resistant electroplating solution and its electroplating method and application are provided, which can increase the thickness of the plating layer, have no leaks, and have a long corrosion resistance time.

Method used

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  • Tungsten-containing and sulfur-corrosion-resistant electroplating solution as well as electroplating method and application thereof
  • Tungsten-containing and sulfur-corrosion-resistant electroplating solution as well as electroplating method and application thereof
  • Tungsten-containing and sulfur-corrosion-resistant electroplating solution as well as electroplating method and application thereof

Examples

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Effect test

Embodiment 1

[0070] The pipe to be electroplated (material: J55N, model: ) for cleaning. After cleaning, degrease at a high temperature of 450°C for 3 hours, and then use quartz sand to derust the inner and outer walls of the pipe to obtain a pretreated pipe.

[0071] The pretreated pipe is subjected to inner layer electroplating, (inner layer main materials: 1000 parts of water, 270 parts of nickel sulfate and 50 parts of boric acid; 1000 parts of inner layer additive water, 0.3 parts of 4-hydroxybenzenesulfonamide, 0.6 parts of sodium benzoate, o 4 parts of methyl salicylaldehyde and 2.5 parts of sodium lauryl sulfate, the addition amount of the inner layer additive is 80ml / A·h; the addition amount of iron remover is 30ml / A·h).

[0072]The treatment conditions for inner layer electroplating are: temperature 60°C, pH 3.5, current 6.0A / dm 2 , the treatment time is 50min, and the inner plating solution is continuously filtered. After the electroplating was completed, the thickness of the...

Embodiment 2

[0077] The pipe to be electroplated (material: J55N, model: ) for cleaning, after cleaning, degrease at a high temperature of 350°C for 5 hours, and then use quartz sand to derust the inner and outer walls of the pipe to obtain a pretreated pipe.

[0078] The pretreated pipe is subjected to inner layer electroplating, (inner layer main materials: 1000 parts of water, 330 parts of nickel sulfate and 30 parts of boric acid; 1000 parts of inner layer additive water, 0.5 parts of m-aminobenzenesulfonamide, 0.4 parts of sodium benzoate, 6 parts of salicylaldehyde and 1.5 parts of sodium lauryl sulfate, the addition amount of the inner layer additive is 40ml / A·h; the addition amount of iron remover is 80ml / A·h).

[0079] The treatment conditions for inner layer electroplating are: temperature 50°C, pH 5, current 2.0A / dm 2 , the treatment time is 70min, and the inner plating solution is continuously filtered. After the electroplating was completed, the thickness of the inner layer...

Embodiment 3

[0083] The pipe to be electroplated (material: J55N, model: ) for cleaning, after cleaning, degrease at 400°C for 4 hours at high temperature, and then use quartz sand to derust the inner and outer walls of the pipe to obtain a pretreated pipe.

[0084] The pretreated pipe is subjected to inner layer electroplating, (inner layer main materials: 1000 parts of water, 300 parts of nickel sulfate and 40 parts of boric acid; inner layer additives: 1000 parts of water, 0.4 parts of m-aminobenzenesulfonamide, 0.5 parts of sodium benzoate, ortho 5 parts of methyl salicylaldehyde and 2 parts of sodium lauryl sulfate, the addition amount of inner layer additive is 60ml / A·h; the addition amount of iron remover is 50ml / A·h).

[0085] The treatment conditions for inner layer electroplating are: temperature 55°C, pH 4, current 4.0A / dm 2 , the treatment time is 60min, and the inner plating solution is continuously filtered. After the electroplating was completed, the thickness of the inne...

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Abstract

The invention discloses a tungsten-containing and sulfur-corrosion-resistant electroplating solution as well as an electroplating method and application of the tungsten-containing and sulfur-corrosion-resistant electroplating solution, and belongs to the technical field of corrosion prevention of oil field pipes. The tungsten-containing and sulfur-corrosion-resistant electroplating solution comprises an inner-layer electroplating solution, a middle-layer electroplating solution and an outer-layer electroplating solution, wherein the main materials of the inner layer and the middle layer comprise nickel sulfate, and main materials of the outer layer comprise nickel sulfate and sodium tungstate. Meanwhile, each layer of electroplating solution further comprises an additive. The tungsten-containing and sulfur-corrosion-resistant electroplating solution provided by the invention is used for carrying out three-layer electroplating on a pipe, all the components in each layer of electroplating solution are reasonably proportioned, so that when the prepared electroplating solution is used for electroplating, the thickness of a plating layer can be increased, meanwhile, the bonding force among all the layers is good, no leakage point exists, thus the corrosion resistance time is long, and the corrosion resistance to hydrogen sulfide is good.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of oilfield pipes, in particular to a tungsten-containing, sulfur-resistant electroplating solution and an electroplating method and application thereof. Background technique [0002] With the continuous development of oil and gas fields, most of the domestic oilfields have been exploited in the middle and late stages, and the development difficulty is increasing. The depth of oil wells is continuously deepening, and the environmental medium of oil wells is constantly deteriorating. Therefore, the working environment of metal pipes for oil fields is becoming more and more complex, with higher temperatures and higher pressures. The change of corrosive environment increases the corrosion rate of pipes and shortens the service life of pipes. Especially in high temperature and high pressure environment, the corrosion rate of hydrogen sulfide to metal pipes is greatly increased, resulting in fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12C25D3/18C25D5/14C25D7/04C25D5/36C23F15/00
CPCC25D3/12C25D3/18C25D5/14C25D7/04C25D5/36C23F15/00
Inventor 王磊钱尧尧蒲宝林康寿惠王宗祥刘心宁孙大鹏
Owner 山东音速石油产业技术研究院有限公司
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