1. **Multiple Chassis Options**
Choose from 6×6, 8×8, or 10×8 special workover rig chassis to match your terrain and load requirements. Rational weight distribution ensures good performance on bumpy, unpaved wellsite roads.
2. **Telescoping Mast with Monkey Board**
Two-section telescoping mast available in 29m or 32m heights, equipped with a monkey board for safe, efficient top drive operations. Adjusting height options of 17.6m, 20.2m, or 21.2m to suit different wellhead configurations.
3. **LIBUS Drawworks Drum**
Main drum features integral LIBUS groove for smooth, regular wire rope spooling. Auxiliary brake uses S122 hydraulic brake, with optional pneumatic water-cooling disc brake for heavy-duty continuous operation.
4. **Centralized Control System**
Electric, hydraulic, and pneumatic controls are centrally located for easy operation. Key components use imported brand-name parts to ensure reliability in demanding oilfield conditions.
5. **650 kN Hook Load Rating**
Rated for 650 kN maximum hook load (900 kN max loading capacity) with 8-line Φ26mm wire rope arrangement. Designed for workover operations on wells up to 4,000m depth.
Applications
The 350HP workover rig is engineered for medium-to-deep well workover operations on oil and water wells up to 4,000 meters. It's our most versatile model — suitable for everything from routine maintenance to more demanding intervention work.
- Primary use: standard well servicing, tubing pulling, pump changes, and well cleanout on medium-depth wells.
- Commonly used by service companies operating across the Middle East, Central Asia, Russia, and Southeast Asia.
- The preferred choice for operators who need one rig that can handle a wide range of well servicing tasks.
The Workhorse of the Fleet
The 350HP class is where most service companies land when specing a workover rig fleet. It has enough hook load to handle the majority of conventional workover tasks — tubing pulls, rod pulls, pump changes, fishing operations — without the higher operating cost of a larger 500HP+ rig.
With multiple chassis options (6×6, 8×8, or 10×8), you can configure this rig to match your specific operating environment. Operators in desert or remote terrain often choose the 8×8 or 10×8 chassis for better traction, while those working on well-connected fields may opt for the 6×6 for better fuel economy.
The 29m or 32m mast options give you flexibility in how you run tubulars — shorter masts for faster rig-up, taller masts for longer stands and fewer pipe connections.
Choosing the Right Workover Rig Size
For wells between 2,500m and 4,000m depth with standard 2-7/8 inch tubing, the 350HP unit is the sweet spot. It handles most routine workover operations efficiently without overkill.
If your wells are shallower than 2,500m, consider the 250HP Workover Rig for a more cost-effective solution. For deeper wells or heavy-duty fishing operations, step up to a 450HP Workover Rig for extra pulling capacity.
FAQs
Q: What depth wells can this workover rig handle?
A: The 350HP workover rig is rated for well servicing operations up to approximately 4,000 meters depth, depending on tubing size and well conditions.
Q: What chassis options are available?
A: You can choose from 6×6, 8×8, or 10×8 special workover rig chassis. The 8×8 and 10×8 options are recommended for rough terrain and remote well sites.
Q: What mast heights are available?
A: Two-section telescoping masts are available in 29m or 32m heights, with adjustable working heights of 17.6m, 20.2m, or 21.2m.
Q: Can this rig handle fishing operations?
A: Yes. With 650 kN hook load and LIBUS drawworks, this rig is capable of handling most routine fishing and stuck pipe recovery operations on medium-depth wells.
al hook load (kN)
650
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The max. loading (kN)
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900
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The height of
mast (m)
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23.5
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The diameter of rope/effective number of
rope (mm/n)
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Φ26/8
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Maximum pulling speed of
hook (m/s)
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1.1
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The dimension of moving state (including
mast) (m)
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13910×2705×4320
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Weight of the whole
set (kg)
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31490
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