Anti-corrosion Technology for Offshore Petroleum Machinery

As the exploitation of land oil resources is getting closer to the bottleneck, offshore oil has become the best answer to solve the shortage of oil resources in my country. However, due to the harsh conditions of offshore oil exploitation, for petroleum machinery, the seawater environment will have an impact on the performance of the machinery, resulting in varying degrees of corrosion on the main structure of petroleum machinery. If there is any omission in the anti-corrosion work, it will directly affect the ocean. The efficiency of oil extraction. For this reason, it is particularly important to intensify the research on anti-corrosion technology of offshore petroleum machinery.

When exploiting oil resources, a large amount of mechanical equipment is required. Compared with land exploitation, the marine environment is complex and harsh, and the requirements for anti-corrosion will be stricter. In the process of using mechanical equipment for oil resource extraction, once the mechanical equipment is corroded to varying degrees, it will lead to a decrease in the performance of the mechanical equipment, induce safety accidents, and also have a negative impact on the quality and efficiency of oil resource extraction. At this stage, social and economic development is inseparable from petroleum resources. In order to speed up the exploitation of petroleum resources and ensure the quality of petroleum resource exploitation, it is necessary to pay attention to the exploitation performance of petroleum machinery, create good working conditions for petroleum machinery, and continuously enhance the application level of petroleum machinery anticorrosion technology , only in this way can the application value of petroleum machinery be reflected.

Chloride

Under ocean conditions, due to the action of salt, chlorides exist in large quantities in seawater. As the working time of offshore oil machinery increases, chlorides will cause varying degrees of corrosion to the structural parts of the machinery, which directly affects the performance of offshore oil machinery. work performance. Under the influence of chloride corrosion factors, when mechanical equipment operates under oil-water conditions for a long time, chloride will chemically react with the material of the mechanical structure, which will cause corrosion of the external anti-corrosion layer of the mechanical structure. As the erosion continues to deepen, Ultimately, it will have an impact on the safety of offshore oil exploration. Therefore, only by strengthening the research on chloride anti-corrosion technology can the impact of chloride on offshore petroleum machinery be reduced.

naphthenic acid

The so-called naphthenic acid, which can also be called petroleum acid, exists in large quantities in marine oil resources. During the mining process, as an organic acid substance, its corrosion effect on offshore petroleum machinery is very serious. As we all know, there are a lot of iron materials in offshore petroleum machinery and equipment. If the iron materials come into contact with naphthenic acid, it will trigger a chemical reaction, cause changes in the physical properties of the iron materials, and even induce fracture problems, resulting in There are potential safety hazards in the equipment, which will affect the mining efficiency and safety, and will directly threaten the life safety of the operators.

Sulfide

After the oil resources are exploited, the impurities in the oil resources need to be removed before the oil can be put into the next process. In petroleum media, the composition of sulfide is the most significant, and it is very easy to chemically react with other substances. When seawater and sulfide come into contact with each other, hydrogen sulfide will be generated. As a chemically active substance, hydrogen sulfide and water will form acid compounds. During the working process of petroleum machinery and equipment, if the mechanical equipment is in contact with sulfide for a long time, a series of chemical reactions with reducing properties will occur, resulting in varying degrees of corrosion on the mechanical equipment.

polysulfide

Compared with the corrosion degree of sulfide, the existence of polysulfide will further intensify the corrosion rate of petroleum machinery and equipment. Studies have shown that under the action of polysulfides, it will corrode the structure of petroleum machinery and equipment for a long time, and will cause a corrosion layer to form on the surface of the equipment. It will gradually fall off, causing the equipment to lose its anti-corrosion effect. Under the long-term action of the marine environment and polysulfides, the surface of petroleum machinery will show accelerated corrosion, and at the same time, the corrosion area will continue to increase on the surface of the machinery, causing serious damage to the machinery and equipment. As on-site personnel, they should pay more attention to the corrosion problems caused by polysulfides, and take scientific and reasonable measures to reduce the impact of polysulfides on offshore petroleum machinery.

As mentioned above, the continuous exploitation of offshore oil can not only enrich the acquisition channels of my country’s oil resources, but also become an important driving force to promote my country’s economic growth. At present, with the gradual increase in the scale of offshore oil exploitation, a large amount of funds are invested in offshore oil exploration projects. As an oil exploration enterprise, it must take measures to ensure that offshore oil exploitation can be steadily advanced, and at the same time focus on increasing anti-corrosion technology research. Apply modern anti-corrosion technology to petroleum machinery to create favorable conditions for the safe and trouble-free operation of petroleum machinery and ensure the prosperity of offshore oil exploitation