The ZJ70LDB 2000HP land rig is engineered for demanding onshore drilling operations, with a maximum drilling depth range of 4000 to 7000 meters (13,123 to 22,965 feet) depending on the drill pipe size. The rig utilizes a compound drive system that combines a diesel engine with a coupling reducer and chain transmission to power the drawworks and mud pumps, while the rotary table is driven by a VFD (Variable Frequency Drive) motor or DC motor for stepless speed control and torque limitation.
The drawworks features an internal speed shift mechanism with pneumatic remote control, allowing for seamless operation. The primary brake system consists of a hydraulic disc brake, with an auxiliary eddy current brake to enhance safety and control. The mast and substructure are designed for easy assembly and disassembly, with a front-level swing lift and rear-level box structure for stable operation.
This rig also supports independent driller’s cabins, offering integrated control of pneumatic, electric, and hydraulic systems through PLCs, improving the working environment and reducing operator fatigue. The rig is equipped with skid-mounted rails for easy movement between well sites, making it ideal for cluster drilling operations.
2000HP Land Rig – ZJ70LDB Specifications:
| Parameter | Specification |
|---|---|
| Nominal drilling depth | 4500-7000 m (14,764-22,965 ft) with 114mm (4 1/2″) drill pipe |
| 4000-6000 m (13,123-19,685 ft) with 127mm (5″) drill pipe | |
| Max. hook load | 4500 kN (1,011,640 lbf) |
| Hook speed | 0.21-1.36 m/s (0.69-4.46 ft/s) / 0.25-1.91 m/s (0.82-6.27 ft/s) |
| Traveling line | 12 lines |
| Drill line diameter | 38 mm (1.5 in) |
| Max. pull of fast line | 485 kN (109,053 lbf) |
| Drawworks Model | JC70B |
| Drawworks Rated Power | 1470 kW (2000 HP) |
| Drawworks Speed | 6F(4F)+2R |
| Main brake | Hydraulic disc brake |
| Auxiliary brake | Eddy current brake |
| Crown Block Model | TC450 |
| Traveling Block Model | YC450 |
| Sheave OD of hoisting system | 1524 mm (60 in) |
| Hook Model | DG450 |
| Swivel Model | SL450 |
| Swivel Stem dia. | 75 mm (2.95 in) |
| Rotary Table opening | 952.5 mm (37.5 in) |
| Rotary Table Speed | I or II, stepless speed regulation |
| Rotary Table Drive model | VFD motor |
| Mast Type | K |
| Mast Height | 45 m (147.6 ft) |
| Mast Max. load | 4500 kN (1,011,640 lbf) |
| Substructure Type | Front level, swing lift; rear level, box |
| Substructure Floor height | Front: 10.5 m (34.4 ft); Rear: 0.8 m (2.6 ft) |
| Substructure Clear height | 7.4/8.9 m (24.3/29.2 ft) |
| Mud Pump Model × number | F-1600 × 2 |
| Mud Pump Drive mode | Compound drive |
| Rotary electric drive mode | AC-DC-AC or AC-SCR-DC, one for one control |
| Total installed power | 3×1000 kW (4023 HP) or 4×810 kW (4352 HP) |
