在钻进工作中,连结在钻桿上的水接头,常发生自动卸扣的现象,影响正常钻进.分析其原因是由于水接头和钻桿是用右旋丝扣相连接的.工作时,因提升钻具对水接头的拉力,及钻桿回转对水接头的振动和摆动,以及塞线对水接头回转的摩擦阻力,尤其是钻桿的回转力的方向,正是水接头卸扣的方向,故易使水接头卸扣.因此,我们认为使用左旋丝扣即可克服上述缺点.因为这时,回转力的方向,正是钻桿与水接头的扭接方向.具体作法是将机上钻桿的上端改为左丝扣,下端不变.水接头下端亦相应改为左丝扣.工作时,将改制后的钻桿用立轴卡紧,注意卡在正中心,以免钻桿摇摆,上部接水接头,下部扭接井内钻桿,即可开钻钻进. During the drilling work, the water joint which is connected with the drill pipe often has the phenomenon of automatic shackle, which affects the normal drilling. The reason for the analysis is that the water joint and the drill pipe are connected by the right-handed thread. , Due to enhance the rigging on the water joint pull, and drill stem rotation of the water joint vibration and swing, as well as the plug on the water joint rotation of the friction resistance, especially the direction of rotation of the drill pipe, it is the water connector shackle Therefore, we believe that the use of left-handed screw to overcome the above shortcomings, because at this time, the direction of the rotation force, it is the drill pipe and the water joint twist direction. The specific approach is to The upper end of the drill pipe is changed to the left threaded buckle, the lower end is unchanged, the lower end of the water joint is correspondingly changed to the left threaded buckle, and when working, the modified drill pipe is clamped with the vertical shaft, paying attention to being stuck in the center, , The upper water connector, the lower part of the drill pipe within the well, you can drill into the drilling.