... drilling rig: 1)Drilling depth,7000m, 2)Hook load, 4500kN, 3)Drawwork power,2000kw, 4)Auxiliary brake:E.T. N brake ZJ70/4500D rig ... YZ08/YZ08A DC motors connected with 2000hp drawworks and mud pump. Drawworks is drived with 2 sets of motors ... , 2 sets of mud pumps are drived with 2 sets of motors separately ... 1 3/8 (35)1 1/2 (38)One Mud Pump Rated Power hp(kW)800 (590)1000 (735 ...