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The engine is to drive the drawworks, rotary table and mud pumps through gear box where the speed of engine is reduced and the toruqe is increased, and tje compound drive device.
The drive mode, Engine+ Hydraulic Torque Convertor + Compound Chain Box or Egine + Gear Reducer +V-belt Compound, is adopted.
The engines, transmission device and drawworks are installed at low position, and the rotary table is driven through a cardan shaft at high position.
The drawworks is of enclosed chain drive type with 4 forward and 2 reverse internal shifts or 6 forward and 2 reverse internal shifts. The main brake is hydrualic disc brake or band brake, and the auxiliary brake is electro-magnetic brake or Eaton pneumatic brake. The AC motor emergency drive device is also available for option and the auto-driller connection is supplied.
Driller’s cabin, drilling instruments and wellhead tools are also available for options. |
