XJ-750 (ZJ-30) Drilling & Workover Rig adopts double Caterpillar C15 engines with Allison transmissions. It is the best-selling mobile drilling rig for both oil drilling and workover purposes. It can reach up to 3,000m drilling depth and 8,000m workover depth, with 1,700kN max hook load. XJ750 rig is the ideal choice for heavy duty workover and mobile drilling operation.