1. **Imported CAT Engine & Allison Transmission**
Powered by Caterpillar C15 engine (540 bhp) paired with Allison M5620AR transmission — world-class power components known for reliability and long service life in demanding oilfield conditions.
2. **10×8 Heavy-Duty Chassis**
Built on a purpose-built 10×8 workover rig chassis with excellent load distribution. Handles the weight of the larger mast, drawworks, and high-power engine with ease, even on rough terrain.
3. **32m Telescoping Mast with Monkey Board**
Two-section telescoping mast available in 29m or 32m heights, with a maximum static load capacity of 1,200 kN. Equipped with monkey board for efficient, safe tubular running operations.
4. **LIBUS Drawworks with Water Cooling**
Main drum features forced circulating water cooling for sustained heavy-duty operation. Optional pneumatic spray cooling system for extended fishing and stuck pipe recovery work.
5. **Dual-Purpose: Workover + Light Drilling**
When configured with substructure and supporting accessories, this rig can handle not only workover operations but also light drilling and completion work — making it a versatile investment for service companies.
Applications
The 450HP workover rig is engineered for medium-heavy duty well servicing on deeper, more complex wells. It's the rig you reach for when smaller units don't have enough pulling power, but a full drilling rig isn't justified.
- Primary use: heavy tubing pulling, fishing operations, and complex well intervention on deeper wells.
- Suitable for both workover operations and light drilling/completion work when configured with substructure.
- Commonly deployed in onshore oilfields across the Middle East, Russia, Central Asia, and Southeast Asia.
When You Need More Pulling Power
There's a point where the 350HP class reaches its limits: stuck pipe that won't free up, heavy scale that requires constant pulling, or wells that are deeper than 3,000m. That's where the 450HP rig comes in.
With 1,125 kN of hook load and CAT/Allison powertrain, this rig has the muscle to handle the tough jobs that smaller rigs struggle with. The water-cooled drawworks brake means it can keep working through long fishing operations without overheating.
And because it's built on a 10×8 chassis, it's still mobile — you're not stuck with a skid-mounted unit that requires weeks to rig up and move. You get drilling-rig-level performance with workover-rig-level mobility.
Choosing the Right Workover Rig Size
For wells between 3,500m and 5,000m depth, or operations involving frequent fishing and stuck pipe recovery, the 450HP unit delivers the pulling capacity you need.
If your wells are shallower and operations are routine, the 350HP Workover Rig offers a more cost-effective solution. For even heavier duty on ultra-deep wells, step up to a 550HP Workover Rig for maximum hook load capacity.
FAQs
Q: Can this rig do drilling work as well as workover?
A: Yes. When configured with substructure and supporting accessories, the 450HP workover rig can handle light drilling and completion operations, making it a versatile dual-purpose unit.
Q: What engine and transmission are used?
A: The power system uses an imported Caterpillar C15 engine (540 bhp) paired with an Allison M5620AR transmission — both known for reliability and global service support.
Q: What's the maximum hook load?
A: The maximum static hook load is 1,125 kN, with a 1,200 kN maximum mast loading capacity.
Q: What chassis is used?
A: This rig is built on a 10×8 heavy-duty workover rig chassis, designed to handle the weight of the larger mast and high-power equipment.
The type of traveling system
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4×5
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Diameter of rope
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Φ26
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Engine
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CAT C15/540 bhp
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The model of gear box
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Allison M5620AR
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Mast
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Clean height
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32m
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The max. static loading
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1200kN
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Drawwork
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The max. pull of fast line
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180KN (the second floor)
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Diameter of wire line
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26mm
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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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3.5m /4m/ 4.5 (can choose)
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Model of rotary table
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ZP175
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