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发明授权
CN106086645B 抗硫化氢腐蚀油套管及其制造方法 有权

抗硫化氢腐蚀油套管及其制造方法
摘要：
本发明公开了抗硫化氢腐蚀油套管及其制造方法，油套管中化学成分的重量百分配比为：0.24%≤C≤0.28%、0.15%≤Si≤0.35%、0.4%≤Mn≤0.5%、S≤0.003%、P≤0.01%、0.70%≤Cr≤1.10%、0.25%≤Mo≤0.35%、0.02%≤Al≤0.04%、Ca≤0.0025%、N≤0.08%、Ni≤0.1%、Cu≤0.1%、V≤0.005%、Nb≤0.005%以及余量的Fe和杂质元素；经冶炼工序、轧管工序、调质热处理工序、螺纹加工工序制成。此种油套管的力学性能和抗硫化氢腐蚀性能优异，可广泛用于含硫化氢油气井的开采，具有广阔的市场前景。
摘要（英）：

The invention discloses a hydrogen-sulfide-corrosion-resistant oil casing and a manufacturing method thereof. The oil casing contains the following chemical components by weight percent: larger than or equal to 0.24% and smaller than or equal to 0.28% of C, larger than or equal to 0.15% and smaller than or equal to 0.35% of Si, larger than or equal to 0.4% and smaller than or equal to 0.5% of Mn, smaller than or equal to 0.03% of S, smaller than or equal to 0.01% of P, larger than or equal to 0.70% and smaller than or equal to 1.10% of Cr, larger than or equal to 0.25% and smaller than or equal to 0.35% of Mo, larger than or equal to 0.02% and smaller than or equal to 0.04% of Al, smaller than or equal to 0.0025% of Ca, smaller than or equal to 0.08% of N, smaller than or equal to 0.1% of Ni, smaller than or equal to 0.1% of Cu, smaller than or equal to 0.005% of V, smaller than or equal to 0.005% of Nb, and the balance of Fe and impurity elements, and all the chemical components are subjected to the procedures of smelting, pipe rolling, quenched-tempered heat treatment, and thread processing. The hydrogen-sulfide-corrosion-resistant oil casing is excellent in mechanical property and hydrogen sulfide corrosion resistance, can be widely used for mining of a hydrogen-sulfide-containing oil and gas well, and has a wide market prospect.

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