Basic Parameter Of Varied Rigs
Rig Model ZJ50D
ZJ70D

Nominal drilling depth, 127mm(5″)DP, m 5000 7000
Max. hook load, kN(t) 3150（315） 4500（450）
dill line system of travelling system 6×7 6×7
Dia. Of drill line，mm 35 38
Max. pull of fastline, kN 350﹙35﹚ 485﹙48.5﹚
Drawworks Model JC-50D JC-70D
Rated power, kW(hP) 1100(1500) 1470(2000)
Gears 2（4） 4
Main brake hydraulic disk brake hydraulic disk brake
Assistant brake Eddy current brake(EATON) Eddy current brake(EATON)
Crown block TC-315 TC-450
Travelling block YC-315 YC-450
OD of sheaves of hoisting system, mm 1270 1540
Hook DG-315 DG-450
Swivel Model SL-450 SL-450
Dia. of stem bore 75 75
Rotary table Opening dia. mm(in) 952.5(37 1/2) 952.5(37 1/2)
Gears I OR II, stepless speed regulating
Drive mode independent or compound drive
Derrick (mast) Type JJ315/45-K JJ450/45-K
Height, m 45m 45m
Max. load, kN(lbs) 3150(700000) 4500(1000000)
Racking board height, m 24.5, 25.5, 26.5 24.5, 25.5, 26.5
Substructure Type DZ315/9-S DZ450/9(10.5)-S
Drillfloor height 9 9 (10.5)
Clearance height under rotary beam, m 7.6 7.4 ( 9 )
Capacity of mud circulating system 　 　
Mud pump Model×number F-1300×2 F-1600×2
Drive mode DC motor
HP mud manifold Ф103mm (bore dia.) × 35MPa
Electric drive mode AC-SCR-DC，one to one, or one to two
Number of main generator × capacity 3×1500KVA 4×1900KVA