Abstract: According to the requirements of SY/T 6952.2-2013 standard and working conditions of heavy oil thermal recovery wells, Daye Special Steel Co Ltd successfully produces a kind of grade 110SH-1 thermal recovery casing with high strength and toughness by using 0.9 ~ 1.2Cr-0.3 ~ 0.6 Mo-based low alloy + Nb-Ti-V respectively 0. 01 〜0. 05 composition design of microalloy to reduce the use of precious alloy and production cost. The Φ 177.8 mmx 9.19 mm seamless steel pipe is produced by process of "70 t EAF →LF + VDC→CM Φ230 mm bloom →CPE mill rolling→quenching and tempering heat treatment" , according to the test results it is defined that the quenching temperature 920 ℃, water cooling, tempering temperature 660℃ ,air cooling process. The results show that the conventional performance, high-temperature anticreep performance, full-size blasting, full-size crushing and other test results of the steel grade thermal recovery casing fully meet the requirements of SY/T 6952. 2-2013 industry standard.

摘要： 根据SY/T6952.2-2013标准要求及稠油热采井工况环境,为减少贵重合金的使用,降低生产成本,大冶特殊钢有限公司采用0.9～1.2Cr-0.3～0.6Mo基低合金+Nb-Ti-V分别为0.01～0.05微合金成分设计,按照"70 t电弧炉冶炼→LF+VD→连铸Φ230 mm圆坯→CPE顶管机组成管→调质热处理"工艺流程生产Φ177.8 mm×9.19 mm无缝钢管,根据试验结果确定了920℃淬火,水冷,660℃回火,空冷的热处理工艺,成功开发出一种高强韧性的110SH-1钢级热采套管。测试结果表明,该钢级的热采套管常规性能、高温蠕变性能、全尺寸爆破、全尺寸挤毁等完全满足SY/T 6952.2-2013行业标准要求。