Grade of oil casing custom pipeline

　　The oil casing custom pipeline is mainly used for the drilling of oil and gas wells and the transportation of oil and gas. It includes oil drilling pipe, oil casing custom pipeline and oil extraction pipe. Oil casing custom pipeline is mainly used to connect drill collar and bit and transfer drilling power. Petroleum casing is mainly used to support the well wall in the process of drilling and after completion, so as to ensure the normal operation of the whole oil well in the process of drilling and after completion. The oil and gas at the bottom of the oil casing custom pipeline are mainly transported to the surface by the pumping tubing.

　　API 5L X42 N80 Seamless Steel Oil Casing Custom pipeline is the lifeline to maintain oil well operation. Due to different geological conditions, the downhole stress state is complex, and the comprehensive action of tensile, compressive, bending and torsional stresses acts on the pipe body, which puts forward higher requirements for the quality of the casing itself. Once the casing itself is damaged for some reason, the production of the whole well may be reduced or even discarded.

　　According to the strength of the steel itself, the oil casing custom pipeline can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, q125, V150, etc. Different well conditions and well depths lead to different steel grades. In corrosive environment, the casing itself is also required to have corrosion resistance. In the complex geological conditions, casing is also required to have collapse resistance.