【摘要】 本文从刮刀钻头几何学和摩擦功等原理出发,推导出了钻头刀翼高度磨损速度方程。在实验室里,以地面钻井条件做了大量磨损速度的试验工作。实验数据的回归分析表明,试验结果与理论分析基本一致。为了确定钻头寿命,对刀翼磨损形状曲线也作了初步的分析和探讨。更多还原

【Abstract】 Laboratory study of drag bit blade wearing rate has been carried out on a medium size test rig under surface drilling condition. The theoretical wear rate equation of drag blade height has been derived based on drag bit geometry and its frictional work. The regression equation of experimental data agrees well with theoretical equation. A preliminary approach to wearing shape curve of drag blade was made to help to determine bit life.更多还原