... workover rig is the smallest self-propelled rig, Workover Rigs,drilling rig,mobile rigs XJ150 workover rig is the smallest self-propelled rig, and mainly used for shallow well workover ... installation, operation and maintenance.52.49 ft ( 16m ) or 59.06 ft ( 18m ) single section mast. 6× ... 3.87)Weight lb(kg)48898(22180)Workover Rigs,drilling rig,mobile rigs ..... Workover Rigs,drilling rig,mobile rigs