Specifications
Electric-drive drilling rig*conform to API Spec. 4F, 7K, 8A
*drive mode is AC-SCR-DC
* a complete diesel generator
Electric-drive drilling rig
The drive mode of DC electric-drive drilling rig is AC-SCR-DC, while AC electric-drive drilling rig is AC-DC-AC; it is equipped with a complete diesel generator as the power source.
Drawworks adopts hydraulic disc brake and the EATON auxiliary brake,etc. Drawworks, Mud Pump and Rotary Table can be driven by independent motors (Rotary table can be driven compound).
K type mast, self-lifting or spin-lifting substructure, mast and substructure are raised integrally.
The rig is controlled concentratively in Driller’s control cabin and achieves automatic bit feeding function.
The auxiliary brake of AC-VFD drilling rig is dynamic brake.
