China National Petroleum Corporation (CNPC)

CNPCModel ZJ70/4500DB -Drilling Rig

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Nominal drilling depth: 4,500-7,000 m with 4-1/2" drill pipe. Max hook load: 4,500kN. Drawworks power rating: 2,000HP. Full digital vector AC-DC-AC drive. Intellectual control for drawworks, rotary table and mud pumps. Touch screen and integrated design of electric and hydraulic parts and drilling instruments. Feed back/Dynamic brake. Real time communication and network by PROFIBUS.