TY -的A2 -雪,乾隆AU - Li Zifeng盟——张,超越非盟- Ren,雯AU - Ma,健胃PY - 2020 DA - 2020/07/24 TI -研究径向振动对摩擦的影响和旋转钻柱扭矩SP - 8852530六世- 2020 AB -延伸钻井期间,旋转钻柱的扭矩太大在水平部分,从而导致钻柱的失败。径向振动对摩擦的影响和转矩的旋转钻柱还不清楚。在这个工作,首先,径向振动对摩擦的影响原理和转矩的旋转钻柱在水平段分析。然后,关节和一个椭圆外缘部分的设计,可产生低振幅振动钻柱旋转由于与井筒的交互。可以通过改变调整径向振动特性的主要小半径比椭圆。自主研发的实验设备是为了测试工具的性能和降低摩擦和转矩。钻柱扭矩与不同的普及率,旋转速度,和比率的主要半径小的半径椭圆系统研究。实验结果表明,转矩波动的平均和最大振幅首先减少到最小值,然后增加增加的比率。比达到1.065时,平均和最大转矩波动的振幅明显降低;因此,联合比率为1.065可以有效降低摩擦扭矩。 The average torque reduces when the penetration rate and rotation speed decrease. At rotation speeds of 45 and 60 r/min, the maximum amplitude of torque fluctuation increases first and then decreases with an increase in penetration rate, and it reaches a maximum value at a penetration rate of 22.5 m/h. The fundamental frequency of torque fluctuation is almost linearly related to rotation speed, which is irrelevant to the penetration rate and the ratio of major to minor radius of the ellipse. SN - 1070-9622 UR - https://doi.org/10.1155/2020/8852530 DO - 10.1155/2020/8852530 JF - Shock and Vibration PB - Hindawi KW - ER -