齿轮齿条钻机用DQ250Y型液压顶驱研制

Development of DQ250Y Hydraulic Top Drive for Rack and Pinion Rig

为齿轮齿条钻机研制了DQ250Y型液压顶驱,其动力传动系统采用空心轴马达直接驱动主轴,无减速箱及其稀油润滑系统。顶驱上、下运行过程中使用齿条作为导轨,能够主动施加钻压,依靠销轴传感器检测悬重等参数,特别适用于水平井、大位移井的钻井作业。液压控制系统为闭式系统,可两挡切换,实现高低速传动。测试结果表明:各项参数均满足现场使用要求,具有推广前景。

The DQ250Y hydraulic top drive was developed for the pinion and rack-drilling rig.Its power transmission system uses hollow shaft motor to drive the main shaft directly without reduction box and its thin oil lubrication system.The rack is used as the guide during the upper and lower operation of top drive for pressurizing and the parameters such as suspended load could be detected by the pin shaft sensor.The new design is suitable for the drilling of horizontal wells and large displacement wells.The hydraulic control system,which is a closed system,can be switched between two gears to realize high and low speed transmission.The test results show that all the parameters meet the field application requirements.