For combined drive drilling rigs, rotary table is driven by electric motor, while drawworks and mud pump are driven by diesel engines, which reduces the cost and long-distance transmission of electric drive drilling rigs, and eliminates the slope rotary table drive of mechanical rig.
Main models: ZJ30LDB, ZJ40LJDB, ZJ50LJDB, ZJ70LDB, etc.
TECHNICAL FEATURES
v The drawworks and mud pumps are driven by "diesel engine + torque converter or coupling transmission + chain compound" while rotary table is driven by AC VFD motor or DC motor to achieve stepless speed control and break the torque limit for better drilling performance；
v Rig floor is in two levels. Power and transmission system are installed on the rear low level；
v The main brake is hydraulic disc brake and auxiliary brake is electric magnetic eddy current brake. The drawworks is equipped with inner speed regulator where the shift is easily adjusted by remote pneumatic control;
v Box-type or the substructure with swing-lift floor on the front side and the block-type floor on the rear side are available；
v Applicable for cluster well drilling operation;
v PLC is adopted to enable logic control, monitoring and protection of the whole drilling operation, as well as data storage, printing and long-distance transmission.
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Rig Model |
ZJ30LDB |
ZJ40LDB |
ZJ50LDB |
ZL70LDB/LD |
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|
Nominal Drilling Depth, m |
127mm(5″) Drill Pipe |
1600-3000 |
2000-3200 |
2800-4500 |
4000-6000 |
|
114mm(4 1/2″) Drill Pipe |
1500-2500 |
2500-4000 |
3500-5000 |
4500-7000 |
|
|
Max.Hook Load，kN |
1700 |
2250(225) |
3150(315) |
4500(450) |
|
|
Hook Speed，m/s |
0.22-1.63 |
0.21-1.35 |
0.21-1.39 |
0.21-1.36/0.25-1.91 |
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|
Line of Hoisting System |
10 |
10 |
12 |
12 |
|
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Drilling line Diameter，mm |
29 |
32 |
35 |
38 |
|
|
Max. Pull of Fast Line，kN |
210 |
280 |
350 |
485 |
|
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Drawworks |
Model |
JC30B |
JC40B |
JC50B |
JC70B |
|
Power Rating, kW |
400(600) |
735(1000) |
1100(1500) |
1470(2000) |
|
|
Shift |
4F |
6F+1R |
4F+2R |
6F(4F)+2R |
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Main Brake |
Hydraulic Disc Brake or Band Brake |
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Auxiliary Brake |
Electro-magnetic Eddy Current Brake |
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Crown Block |
TC170 |
TC225 |
TC315 |
TC450 |
|
|
Traveling block |
YC170/YG170 |
YC225 |
YC315 |
YC450 |
|
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Sheave OD of Hoisting System，mm |
1005 |
1120 |
1270 |
1524 |
|
|
Hook |
DG225/YG170 |
DG225 |
DG315 |
DG450 |
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|
Swivel |
Model |
SL170 |
SL225 |
SL450 |
SL450 |
|
Stem Dia.，mm |
64 |
75 |
75 |
75 |
|
|
Rotary Table |
Opening，mm |
520.7 |
698.5 |
698.5 |
952.5 |
|
Shift |
Ⅰ, Stepless |
Ⅰ or Ⅱ, Stepless |
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Drive Mode |
变频电机 VFD Motor |
AC/VFD or DC Motor |
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Mast |
Type |
K |
K |
K |
K |
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Height, m， |
42 |
43 |
45 |
45 |
|
|
Max. Load，kN |
1700 |
2250 |
3150 |
4500 |
|
|
Substructure |
Type |
Box-type |
Front: Swing lift; Rear: Box-type |
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Floor Height，m |
Front 4.5，Rear 0.8 |
Front 6，Rear 0.8 |
Front 9，Rear 0.8 |
Front 9 or 10.5，Rear 0.8 |
|
|
Clear Height，m |
2.9 |
4.8 |
7.4 |
7.4或8.9 |
|
|
Mud Pump |
Model × Number |
F1000×1 |
F1300×2 |
F1300×2 |
F1600×2 |
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Drive Mode |
Compound Drive |
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Electric Drive Mode of Rotary Table |
AC-DC-AC或AC-SCR-DC， AC-DC-AC or AC-SCR-DC，One to One Control |
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