ZJ70Rig


The drawworks and the mud pump are driven in the form of four diesel engines



ZJ50Rig


The drawworks and the mud pump are driven in the form of diesel engines



ZJ40Rig


The drawworks and the mud pump are driven in the form of diesel engines



ZJ30Rig


The power is reasonably distributed and the running cost is saved



ZJ20Rig


The ZJ20 rig is a novel hydro-mechanical driven rig

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