drill pipe

Based on similar theory and using model test,mainly researches the torsional strain of the drill pipes in the condition of neglecting the geometry size of the drilling bit,drill collar,kelly bar and not considering joint impact.

在忽略钻头、钻铤和主动钻杆几何尺寸,且不考虑接头影响条件下,以相似理论为基础,运用模型试验,对钻杆柱的扭应变进行了分析研究。

Application of lengthen kelly stand in MWD drilling.;

通过在有线随钻中利用方钻杆柱的方法,即在有线随钻中,根据井架类型,选择2根或3根自加工的方钻杆连接在一起,通过方钻杆和转盘的相互作用,控制螺杆钻具产生的反扭矩,从而避免钻具突然逆时针旋转情况的发生,较好地解决了上述难题,通过在冀中地区的推广应用,使得钻井速度大幅度提高,钻井事故相应地减少,实现了安全、高效钻进,获得了可观的经济效益。

FEM analysis and design of the magnetizer on external thread testing of drill pipe;

钻杆外螺纹检测中磁化器的有限元分析与设计

The utilization of ultrasonic flaw detection in detecting drill pipe crassitude intermediate belt;

超声波探伤在钻杆加厚过渡带检测中的应用

Research on the modeling of simulation of the drill pipe of URRS'turning and bending system and simulation of the resistance;

径向水平井钻杆弯曲转向建模与阻力仿真研究