针对油田产能井在生产过程中发生蜡卡、砂卡，单靠普通修井机大钩载荷能力不能将油管柱从井下起出，无法继续进行修井作业的情况，研制了修井机辅助强拔装置。该装置采用液压传动及控制方式，由执行部分和控制部分组成，文中介绍了主要部件的结构特点及工作原理。试验结果表明，修井机辅助强拔装置拔升力达３００ｋＮ以上，与修井机配套工作时，拔升力可达６００ｋＮ，足可以满足现场使用需要。 For the production wells of oilfields, wax cards and sands cards are produced during the production process. The load capacity of the hooks of ordinary workover machines alone can not lift the tubing string from the well and can not continue the workover work. Pull device. The device uses hydraulic transmission and control mode, the implementation of the part and the control part, the article describes the main components of the structural characteristics and working principle. The test results show that the auxiliary equipment of workover rigs can pull up more than 300kN. When working with the workover rig, the lifting force can reach 600kN, which can meet the needs of on-site use.