Corrosion prevention technology for oil casing

 Corrosion problems are more prominent in petrochemical enterprises.

According to statistics, about 60% of the destruction of petrochemical equipment is caused by corrosion.

On the one hand, the vast majority of its use of plant equipment is made of iron and steel, on the other hand, the medium within the equipment (including raw materials, finished or semi-finished products, etc.) a considerable number of corrosive, generally in the more demanding operating conditions (high temperatures, high pressure, etc.) under the operation of the equipment; equipment outside in the air, seawater, or the soil in the role of acid (mainly carbon dioxide, etc.) and water (wet) vapor, will also be corroded.

 Coating protective layer

In the oil exploitation stage of oil casing protection process, want to really anti-corrosion technology effectively into it, and improve the overall effect of this work, we need to through different perspectives, play out the overall effectiveness of the implementation of the work.

Which can be coated with a protective layer of this approach is relatively effective in cost savings, but also to maximize the performance of the oil casing.

But the actual mining process will often use some relatively strong corrosion-resistant materials, if these materials are coated on the surface of the oil pipe, then it will form a thick protective layer on the surface, which can play a proper and effective protective role for the oil casing, but also maximize the resistance to corrosion.

In the process of anti-corrosion work carried out in the oil casing, it is necessary to effectively prevent it from the overall perspective of the problem of corrosion, so it can also be used in the mode of electrochemical corrosion, combined with the method of applying a protective layer, the corrosion of the oil casing to effectively improve the situation.

Through such a display are able to maximize the process of cost savings to reduce the phenomenon of corrosion, but also to improve the effect of oil casing corrosion prevention work carried out.

Specific content is as follows: the first aspect can be added to the current such protection. In this form of protection, the main thing is to strengthen the current on the metal of the effective protective effect.

In the process of protection needs to be reasonable transformation, the metal from the conversion into a cathode, on the other hand, into anode, so that through the current protection mode of effective protection, oil casing can also prevent the emergence of various types of corrosion problems.

The second aspect is the form of anodic protection. Through the protection of oil casing need to focus on the mode of protection, as well as the protection of the content of the effective analysis, in the actual oil pipeline mining process, may be able to encounter a certain degree of influence of external factors, but also the influence of internal factors.

Want to really reasonable and effective to avoid these factors, you need to focus on its protection, the use of magnesium, zinc, aluminum and other methods to maximize the effect of the protection work, which can also improve the efficiency of its overall work, anticorrosion technology to maximize the corrosion mitigation of oil casing work in conjunction with each other.

1. Add corrosion inhibitor
   Oil casing is located in a relatively harsh environment, in the oil casing surface is prone to water film corrosion, the use of corrosion inhibitors is mainly to this situation for an effective solution, you can effectively reduce the corrosive to extend the life of the oil casing. The corrosion inhibitor can interact with the electrolyte to form a strong protective measure on the surface of the metal.

2.Enhancement of steel quality
Surface aluminum plating layer: such a method, through such a form of material selection, can really maximize the strengthening of hydrogen sulfide itself has the ability to adapt.

In the high temperature environment, its own performance will become superior, at the same time, the overall production process, the use of hydrogen sulfide can also eliminate hydrogen atoms. So for corrosion protection is a certain target, the overall effect is also more prominent.

Common coatings include: chemical conversion, cover layer, non-metallic cover layer, and metal cover layer. Hydrogen sulfide phosphating in the process of processing, can minimize the phenomenon of oil casing corrosion in the continuous transformation process, thus improving the quality of steel to achieve the good development of the oil industry.

3. Selection of corrosion-resistant pipe
   Materials in the selection process, but also need to follow the requirements of two aspects:
   The first aspect is the choice of materials need to be the first evaluation and experimentation, fully on the quality of the material itself presents the technology, as well as operability considerations, but also need to analyze the input of economic and other aspects of the content.The second aspect is the need to explore all aspects of the service environment of the oil casing, prediction, assessment of carbon steel may cause corrosion of specific types and degrees. For different stages of different environments used in the oil casing, take different anti-corrosion methods, the corrosive medium of the well pressure, temperature and other factors to consider. For example: bimetallic composite tube is a widely used material, which has a good mechanical properties, corrosion resistance and adaptability to the environment are strong, so the use of oil casing in the better results.