石油套管在維持油井運行中的作用
發布時間：2020-04-02 16:40人氣：
石油專用管主要用于油、氣井的鉆探及油、氣的輸送。它包括石油鉆管、石油套管、抽油管。石油鉆管主要用于連接鉆鋌和鉆頭并傳遞鉆井動力。石油套管主要用于鉆井過程中和完井后對井壁的支撐，以保證鉆井過程的進行和完井后整個油井的正常運行。抽油管主要將油井底部的油、氣輸送到地面。
Petroleum special pipe is mainly used for drilling of oil and gas wells and transportation of oil and gas. It includes petroleum drilling pipe, petroleum casing pipe, and sucker pipe. Oil drill pipe is mainly used to connect drill collar and drill bit and transmit drilling power. Oil casing is mainly used to support the borehole wall during and after the completion of the well to ensure the normal operation of the well and the completion of the well. The sucker pipe mainly transports oil and gas from the bottom of the well to the surface.
石油套管是維持油井運行的生命線。由于地質條件不同，井下受力狀態復雜，拉、壓、彎、扭應力綜合作用作用于管體，這對套管本身的質量提出了較高的要求。一旦套管本身由于某種原因而損壞，可能導致整口井的減產，甚至報廢。
Oil casing is the lifeline to maintain oil well operation. Due to the different geological conditions and the complex state of the downhole force, the combined effects of tensile, compressive, bending, and torsional stresses act on the pipe body, which places higher requirements on the quality of the casing itself. Once the casing itself is damaged for some reason, it may lead to reduced production of the whole well or even scrap.
按鋼材本身的強度套管可分為不同鋼級，即J55、K55、N80、L80、C90、T95、P110、Q125、V150等。井況、井深不同，采用的鋼級也不同。在腐蝕環境下還要求套管本身具有抗腐蝕性能。在地質條件復雜的地方還要求套管具有抗擠毀性能。
According to the strength of the steel itself, the casing can be divided into different steel grades, namely J55, K55, N80, L80, C90, T95, P110, Q125, V150 and so on. Different well conditions and depths also use different steel grades. In the corrosive environment, the casing itself is also required to have corrosion resistance. It is also required that the casing has anti-collapse performance in the place with complicated geological conditions.
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