Different types of casing used in the oil extraction: Surface oil casing protects the drilling well from shallow water and shallow gas layers, support wellhead equipment, and maintains the weight of other layers of casing. The technical oil casing separates the pressure of different layers so that t

1. Within 50 meters of the installation place the insulating joint, avoid welding dead joints.2. After the insulating joint is connected to the pipeline of the oil casing, it is not allowed to lift the pipeline within 5 meters of the joint. Must be pressure tested with the pipeline.3. After the insu

The causes of surface defects of seamless steel pipes are intricate. There are hundreds of influencing factors listed, and sometimes there are dozens of factors for the same defect, and the occurrence of defects has a great relationship with the steel type. This is why the production of seamless ste

When the spiral steel pipe is blocked, it will not only affect our use but also have a certain corrosion effect on some materials inside the pipe. Therefore, if it is not dredged in time, it will have a very bad effect after a long time.The first is to wash with water and use the pressure of water t