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日本钢管公司研制了一种NK AC系列的低硫、铬-钼钢套管和油管。这种管材具有良好的耐硫化应力腐蚀开裂性能,最适用于含有大量硫化氢的深油气井。 这种管材的制作过程包括: 1.严格控制添加的合金元素,以获得最佳的化学组分。通过在铁水包内熔炼,减少非金属夹杂物,以获得纯洁的钢材,然后用再加热除气系统除去夹杂在钢中的各类气体,使影响
Nippon Steel Company has developed a NK AC series of low-sulfur, chromium-molybdenum steel casing and tubing. This pipe has good resistance to sulfide stress corrosion cracking, the most suitable for deep hydrogen gas wells containing a lot of hydrogen sulfide. This pipe production process includes: 1. Strict control of the added alloying elements in order to obtain the best chemical composition. By smelting in a ladle, reducing non-metallic inclusions to obtain pure steel, and then reheat degassing system to remove all kinds of gas inclusions in the steel, the impact