SJ can offer a complete line of workover rigs, with max. hook load ranging from 585kN to 2250kN, max. workover depth up to 9000m (2-7/8” DP) and max. installed power of 1260HP. Customers can choose to use diesel engine or electrical motors for power system. Single drum, double drum and electric drive single-shaft drawworks are all available.
第四石油机械厂的修井机产品最大钩载范围585kN～2250kN；大修深度可达9000m（2-7/8″钻杆）；最大装机功率为1260hp，可选用柴油机驱动或电机驱动；绞车有单滚筒、双滚筒、电驱单轴绞车等。