钻杆螺纹失效分析及改进措施

介绍了钻杆接头螺纹的失效类型,采用弹性有限元方法建立了钻杆联接螺纹分析模型;讨论了钻杆断裂的具体失效原因,针对钻杆断裂的原因,在结构上提出了增加应力减荷槽和切削公扣大端第1牙高度的改进方案。

Drill Pipe Thread Failure Analysis and Measures to Improve

Describes a drill pipe joint connecting thread failure type and adopt a flexible finite element method to establish a drill pipe connecting thread analysis model,discuss the specific reasons for failure of the drill pipe rupture.Put forward that model number design project of drill pipe on the structure,that is,cutting the bulky end of the outside drill pipe joint tie-in two kinds of projects for the cause of the rupture of drill pipe.