The compound drive drilling rig is designed to deliver high efficiency, flexible configuration, and excellent cost performance. It effectively overcomes the high investment cost of full electric drive systems and the long transmission chain limitations of traditional mechanical drive rigs. By integrating diesel, hydraulic, and electric drive technologies, the system provides stable power output, improved energy utilization, and reliable drilling performance.
Core Advantages
- High cost-performance ratio, reducing overall rig investment and operating costs
- Eliminates limitations of long mechanical transmission chains
- Solves rotary table high-torque climbing and drive difficulty in conventional rigs
- Simple structure with flexible layout and strong adaptability
- Energy-saving and high-efficiency integrated drive system
Power & Transmission System
- Drawworks and mud pumps driven by diesel engine combined with torque converter or coupling + chain compound transmission
- Rotary table driven by AC VFD motor or DC motor for smooth speed control and precise torque regulation
- Compound drive system ensures stable power distribution and efficient energy utilization
- Optional compound drive can also power generator sets and air compressors for auxiliary systems
Rig Floor & Structural Design
- Two-level rig floor layout for optimized space utilization
- Power and transmission systems installed on the rear lower level for safety and convenience
- Optional substructure types: swing lift box-type front level or rear box-type configuration
- Modular design allows flexible arrangement and improved space efficiency
- Wide working platform ensures convenient operation and maintenance
Brake & Drawworks System
- Main brake: hydraulic disc brake for reliable heavy-load control
- Auxiliary brake options: electromagnetic eddy current brake, pneumatic disc brake, or water-cooled disc brake
- Internal speed-shifting system with remote pneumatic control for easy adjustment
- Smooth and precise operation ensures improved drilling safety and control
Intelligent Control System
- Equipped with a separate driller’s cabin for centralized operation
- Integrated control of pneumatic, electrical, and hydraulic systems
- Real-time monitoring of drilling data and operational parameters
- PLC-based logic control for full-process supervision and maintenance
- Supports data storage, printing, and remote transmission
Automation & Expansion Capability
- Optional automatic driller system for enhanced operational efficiency
- Compatible with top drive drilling system for improved performance
- Integrated skid rail system available for cluster well drilling applications
- Highly adaptable configuration to meet different field requirements
This compound drive drilling rig combines mechanical reliability with modern electrical control technology, delivering a balanced solution of efficiency, flexibility, and cost optimization. It is widely used in onshore drilling operations requiring stable performance and adaptable configuration.
Product types and specifications：
| Drilling rig model | ZJ30LDB | ZJ40LDB | ZJ50LDB | ZJ70LDB/LD | |||
| Nominaldrillingdepth,m | 127mm(5″)drill pipe | 1500-2500 | 2000-3200 | 2800-4500 | 4000-6000 | ||
| 114mm(4 1/2″)drill pipe | 1600-3000 | 2500-4000 | 3500-5000 | 4500-7000 | |||
| Max. hook load, kN(t) | 1700（170） | 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 | |||
| Line strung ofhoisting system | 10 | 10 | 12 | 12 | |||
| Drill line diameter，mm | 29 | 32 | 35 | 38 | |||
| Max. pull of fast line，kN | 210 | 280 | 350 | 485 | |||
| Drawworks | Model | JC30B | JC40B | JC50B | JC70B | ||
| Power rating, kW(HP) | 400（600） | 735(1000) | 1100(1500) | 1470(2000) | |||
| Speed | 4F | 6F+1R | 4F+2R | 6F(4F)+2R | |||
| Main brake | Hydraulic disc brake or band brake | ||||||
| Auxiliary brake | Eddy brake or pneumatic disc brake | ||||||
| Crown block | TC170 | TC225 | TC315 | TC450 | |||
| Traveling block | YC170/YG170 | YC225 | YC315 | YC450 | |||
| Sheave OD ofhoisting system, mm | 1005 | 1120 | 1270 | 1524 | |||
| Hook | DG225/YG170 | DG225 | DG315 | DG450 | |||
| Swivel | Model | SL170 | SL225 | SL450 | SL450 | ||
| Stem diameter,mm | 64 | 75 | 75 | 75 | |||
| Rotary table | Table opening,mm(in) | 520.7（20 1/2） | 698.5（271/2） | 698.5（27 1/2）952.5（37 1/2） | 952.5（37 1/2） | ||
| Speed | Ⅰ, smooth change | ⅠorⅡ, smooth change | |||||
| Drive mode | VFD motor | VFD/DC motor | |||||
| Mast | Type | K | K | K | K | ||
| Height, m | 42 | 43 | 45 | 45 | |||
| Max. load, kN | 1700 | 2250 | 3150 | 4500 | |||
| Substru-cture | Type | Box | Box | Front level, swing lift;rear level, box | |||
| Floor height, m | Front 4.5，rear 0.8 | Front 6，rear 0.8 | Front 9，rear 0.8 | Front or10.5，rear 0.8 | |||
| Clear height, m | 2.9 | 4.8 | 7.4 | 7.4or8.9 | |||
| Mud pump | Model × number | F-1000×1 | F-1300×2 | F-1300×2 | F-1600×2 | ||
| Drive mode | Compound drive | ||||||
| electric drive mode ofrotary table | AC-DC-AC or AC-SCR-DC, one for one control | ||||||
