大直径高强度石油套管的开发

Development of Large-sized High-strength Oil Casing

对大直径(339.7mm)高强度石油套管进行了系统的研究。经过初步试制与优化试制,确定了最终的化学成分、轧管工艺、热处理工艺和管加工工艺等。试制结果和批量生产表明,产品性能达到了国外同类产品质量水平,受到了用户的肯定。

Described in the article is the systematic research and development of the large-sized(Φ339.7mm) hi-strength oil casing. Both the initial trial manufacturing and the optimized trial manufacturing of the said tube are performed, based on which, the chemical composition of the material, the rolling process, the heat treatment process and the tube finishing processes, etc are finalized. The results of both the pilot and massive productions have shown that the properties of the tubes are up to the quality level of foreign-made similar tubes, being highly appropriated by customers.