Performance of oil pipe

　　Oil pipe is a steel pipe used to support the oil and gas well wall, so as to ensure the normal operation of the whole well after drilling and completion. A few layers of casing should be used in each well according to different drilling depth and geological condition. After oil pipe well, cement cementing should be adopted. It is different from drill pipe. It can not be used repeatedly. It is one of the disposable materials. Therefore, the consumption of casing accounts for more than 70% of the total oil pipe.

　　Psl1 API 5L LSAW Oil Pipe is the lifeline for maintaining the operation of oil wells. Due to the different geological conditions, the state of downhole stress is complex. The combined action of tension, compression, bending and torsion acts on the pipe body, which sets high requirements for the quality of the casing itself. Once the casing itself is damaged for some reason, it may lead to the reduction of the whole well and even the discarding of the casing.

　　According to the strength oil pipe of the steel, it can be divided into different steel grades, that is, J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. The well condition and the depth of the well are different, and the steel grades are different. The corrosion resistance of the oil pipe is also required under the corrosive environment. In the case of complex geological conditions, the oil pipe has the resistance to collapse.