Oil casing pipe is one of the important equipment in oil exploration, development and production. It is used as a connection between the well wall and the oil pipe to fix the oil pipe and seal the wellbore to ensure the normal production of the oil field. Therefore, the maintenance of oil casing is very important. The following are some common methods and precautions.

1. Cleaning

During the use of oil casing pipe, it is necessary to regularly clean the surface and interior of the casing to prevent accumulation and impurities from affecting work efficiency, and check for corrosion or damage. When cleaning, care should be taken to use tools such as soft brushes, and do not use wire brushes or hard objects to wipe, so as not to scratch the surface of the casing.

2. Coating protection

In order to resist the corrosion and erosion of the oil casing by the external environment, the surface can be protected by coating. Commonly used protective coatings include epoxy resin, asphalt, etc., which can effectively prevent the casing from being corroded in various harsh environments.

3. Use an abrasive

In order to reduce the wear of the casing, some lubricants and friction agents are often used, such as graphite paint, polytetrafluoroethylene (PTFE), etc. These chemicals reduce bushing wear and increase service life, while also protecting the bushing from corrosion.

4. Keep dry

Oil casing must be kept dry during storage and use to avoid problems such as corrosion. For oil casings stored for a long time, it should be prevented from being exposed to high humidity environment for a long time, and attention should be paid to regularly checking its status to ensure that it can be repaired and replaced in time when necessary.

5. Maintenance

When the service life of the oil casing reaches a certain time limit or problems such as damage and aging occur, it needs to be repaired and replaced. Regular inspection and maintenance of oil casing is of great significance to ensure the safe production and economic benefits of oil fields.