结构用无缝钢管主要用于油、气井的钻探及油、气的输送。它包括结构用无缝钢管、结构用无缝钢管、抽油管。结构用无缝钢管主要用于连接钻铤和钻头并传递钻井动力。结构用无缝钢管主要用于钻井过程中和完井后对井壁的支撑,以保证钻井过程的进行和完井后整个油井的正常运行。抽油管主要将油井底部的油、气输送到地面。
Seamless steel pipe for structure is mainly used for oil and gas well drilling and oil and gas transportation. It includes seamless steel pipe for structure, seamless steel pipe for structure and pumping pipe. Seamless steel pipe for structure is mainly used to connect drill collar and bit and transfer drilling power. The structural seamless steel pipe is mainly used to support the wellbore during drilling and after completion, so as to ensure the normal operation of the whole well after completion. The pumping pipe mainly conveys oil and gas from the bottom of the well to the ground. 结构用无缝钢管是维持油井运行的生命线。由于地质条件不同,井下受力状态复杂,拉、压、弯、扭应力综合作用作用于管体,这对结构用无缝钢管本身的质量提出了较高的要求。一旦结构用无缝钢管本身由于某种原因而损坏,可能导致整口井的减产,甚至报废。
Seamless steel pipe for structure is the lifeline to maintain oil well operation. Due to the different geological conditions, the stress state of underground is complex, and the comprehensive action of tension, compression, bending and torsion stresses acts on the pipe body, which puts forward higher requirements for the quality of seamless steel pipe for structure. Once the structural seamless steel tube itself is damaged for some reason, it may lead to production reduction or even scrap of the whole well.
按钢材本身的强度结构用无缝钢管可分为不同钢级,即J55、K55、N80、L80、C90、T95、P110、Q125、V150等。井况、井深不同,采用的钢级也不同。在腐蚀环境下还要求结构用无缝钢管本身具有抗腐蚀性能。在地质条件复杂的地方还要求结构用无缝钢管具有抗挤毁性能。
Seamless steel pipes can be divided into different grades according to the strength structure of steel, namely J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. Wellbore condition and depth are different, and the steel grade used is also different. In corrosive environment, seamless steel tube for structure is also required to have corrosion resistance. Where geological conditions are complex, it is also required that seamless steel tubes for structures have anti-collapse properties.
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