... ZJ50/3150DZ) 2000HP(ZJ70/4500DZ) 3000HP(ZJ90/6750DZ) Electrical Driven oil Drilling Rigs We are supplying various drilling rigs (1000HP ... including AC variable frequency, DC motor, mechanical electric and mechanical driven rigs. The Company has the capability of design, manufacture, ... 1999 Type & Basic Parameters of Oil Drilling Rigs4. DC driven rig adopts international advanced AC-SCR-DC power system, ...