螺杆钻在钻进施工中或下钻下管柱过程中经常出现螺杆钻被井内细小颗粒及钻屑在钻体内沉淀出成螺杆钻被堵而不能正常工作的现象,使钻进施工被迫停止或重新起出更换螺杆钻在螺杆钻上安装一套防堵装置,避免沉积物进入螺杆钻里,防止螺杆钻被堵或被沉积物堵死而不能正常施工的现象,以提高钻进效率,减少作业成本投入,提高作业施工时效 During the construction of the screw rod or under the pipe string, the screw rod drill is often small particles and drill cuttings in the drill body precipitated into the screw drill is blocked and can not work properly, so that the drilling construction was forced to stop Or restarting the replacement screw drill Install a set of anti-blocking device on the screw drill to prevent the sediment from entering the screw drill to prevent the screw drill from being clogged or blocked by sediments and can not be normally applied to improve the drilling efficiency, Reduce operating costs, increase operating timeliness