Oil casing outer anticorrosive coating material: oil casing outer anticorrosive coating material mainly includes galvanized layer, coating and anticorrosive paint three kinds. Among them, galvanized layer is the zinc powder powder suspended in water, the use of electrolytic way to convert zinc powder powder into zinc ions, and then zinc ions plated on the surface of the oil casing to form a film, the formation of galvanized layer. Galvanized coating has good corrosion resistance and oxidation resistance, which can effectively prevent oil casing corrosion. Coating is the coating of a thin film applied to the surface of the oil casing. The coating has good corrosion resistance and oxidation resistance, which can effectively prevent oil casing corrosion. Anticorrosive paint is a thin film coated on the surface of oil casing to form anticorrosive paint. The anticorrosive paint has good corrosion resistance and oxidation resistance and can effectively prevent the corrosion of oil casing. Other external protection methods: In addition to the use of external protection materials, other measures can be taken to prevent corrosion of oil casing. For example, oil casing can be heat-treated to make it more resistant to corrosion. In addition, oil casing can be made using stainless steel or other corrosion resistant materials.

The impact on our country's oil casing: Our country's annual demand for oil casing is 1 billion meters, which is a huge challenge for my country's oil industry. Casing pipe is a key kind of oil exploration and development equipment. Its main function is to protect the oil pipeline from being relieved of corrosion. The external corruption layer material of the oil casing pipe is a key factor in preventing the corrosion of  oil casing pipe. Therefore, choosing suitable external corruption layer materials is very important for long-term use of casing pipe. At present, the main external anticorrosive layers of oil suits in my country include polyvinyl chloride (PVC), polyurethane (PU), epoxy resin (EP), and polycard (PF). Among them, polyvinyl chloride is currently using the most widely used external corruption layer material, but due to its lower corrosion resistance and poor wear resistance, it has made it shorter in high temperature, high pressure and high concentration conditions.

Summary: It can be seen from the above content that the external corruption layer material of the oil casing pipe is very important. It can not only prevent the corrosion of oil, but also prevent the erosion of the external environment. At present, my country is already using this material and has achieved good results. In summary, the materials of the anticorrosive layer outside the oil pipeline are stricter.