1. **CAT C18 High-Power Engine**
Powered by Caterpillar C18 engine delivering 630 bhp — the next step up from our 450HP rig's C15. World-class power and reliability for sustained heavy-duty operation on deep wells.
2. **10×8 Heavy-Duty Chassis**
Purpose-built 10×8 workover rig chassis designed to handle the weight of the taller 34m mast and higher-capacity drawworks. Excellent weight distribution for on-the-road mobility.
3. **34m Tall Telescoping Mast**
Two-section telescoping mast at 34m clean height — taller than our 450HP unit's 32m. Accommodates longer tubing stands for faster tripping on deep wells. Maximum static load capacity: 1,350 kN.
4. **Shaft Drive Rotary Table**
Transmission shaft drive type with 5 forward + 5 reverse speeds anti-reversion rotary table drive. Handles heavier rotary operations when configured for drilling or completion work.
5. **Dual-Purpose Heavy-Duty Rig**
When configured with simple drilling platform and substructure, this rig can handle both heavy workover operations and light drilling work — maximizing your equipment utilization.
Applications
The 550HP workover rig is engineered for heavy-duty well servicing on deep, complex wells. It's the rig you deploy when the job involves significant pulling loads, long fishing operations, or deep-set plug and packer work.
- Primary use: heavy workover operations, deep well intervention, and fishing/stuck pipe recovery on deep wells.
- Suitable for both workover operations and light drilling/completion work when configured with substructure.
- Commonly deployed by large service companies on mature deep oilfields across the Middle East, Russia, and Central Asia.
Built for the Tough Jobs
Deep wells present unique challenges: tubing that's been set for decades, scale buildup that requires constant pulling force, packers that are deeply stuck, and fishing operations that can last for days.
The 550HP workover rig is built for exactly these conditions. With 1,350 kN of hook load and a CAT C18 engine, it has the muscle to free stuck tubing that would defeat smaller rigs. The 34m mast lets you run longer stands, which cuts tripping time significantly on deep wells.
And because it's still a mobile truck-mounted rig, you retain the mobility that skid-mounted drilling rigs can't offer. You can move between well sites within the field without the mobilization cost and rig-up time of a full drilling rig.
Choosing the Right Workover Rig Size
For deep wells (4,000m+) or operations involving heavy fishing and stuck pipe recovery, the 550HP unit delivers the pulling capacity you need.
If your wells are shallower and operations are routine, the 450HP Workover Rig offers a more cost-effective solution. For even heavier duty on ultra-deep wells or more demanding drilling work, step up to a 650HP Workover Rig for maximum performance.
FAQs
Q: How deep of wells can this rig handle?
A: The 550HP workover rig is rated for deep well servicing operations, typically up to 5,000-6,000 meters depending on tubing size and well conditions.
Q: What engine is used in this rig?
A: It's powered by an imported Caterpillar C18 engine delivering 630 bhp, paired with an Allison M6620AR transmission.
Q: Can this rig do drilling work?
A: Yes. When configured with a simple drilling platform, substructure, and supporting equipment, it can handle light drilling and completion operations in addition to workover work.
Q: What's the mast height?
A: The two-section telescoping mast has a 34m clean height — taller than our 450HP unit's 32m, for longer stands and faster tripping.
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The type of traveling system
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4×5
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Diameter of rope
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Φ29
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Engine
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CAT C18/630 bhp
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The model of gear box
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Allison M6620AR
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Mast
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Clean height
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34m
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The max. static loading
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1350kN
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Drawwork
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The max. pull of fast line
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210KN (the second floor)
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Diameter of wire line
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29mm
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The max. rotate speed
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450rpm
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Drilling floor
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Height
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4m
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Model of rotary table
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ZP175
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