1. **12×8 Self-Propelled Chassis**
Built on a 12×8 drive chassis — the largest chassis in our workover rig lineup. Designed to handle the weight of the taller 35m mast and higher-capacity drawworks, with rational weight distribution for on-the-road mobility.
2. **Hydraulic Disc Brake System**
Drawworks main brake uses a hydraulic disc brake system, with Eaton pneumatic water-cooled disc brake as the auxiliary brake. Provides reliable, consistent braking performance during heavy-duty lifting operations.
3. **Patented Finite Element Design**
Finite element analysis and design applied to the mast, frame, and drawworks — reducing overall rig weight while maintaining structural integrity. Multiple patented technologies incorporated throughout the design.
4. **Parallelogram Substructure**
Parallelogram-type substructure with stable construction and easy installation. Provides a solid working platform for heavy-duty drilling and workover operations.
5. **5+5R Anti-Reverse Rotary Drive**
5 forward + 5 reverse speeds anti-reverse rotary table transmission. Handles demanding rotary operations including milling, fishing, and completion work on deep wells.
Applications
The 650HP workover rig is engineered for heavy-duty deep well operations — the most demanding tier of our mobile service rig lineup. It's built for major oil fields where deep wells, complex completions, and heavy intervention work are the norm.
- Primary use: deep well overhaul, heavy workover operations, well testing, salvage, and pump inspection.
- Suitable for both workover operations and light drilling/completion work when configured with substructure.
- Deployed by major service companies on large onshore oil fields across the Middle East, Russia, and Central Asia.
ZYT's Top-Tier Mobile Workover Rig
The 650HP class represents the upper limit of what a truck-mounted workover rig can do before you need a full drilling rig. With 1,470 kN of hook load and a 35m mast, it can handle the toughest intervention jobs on deep wells.
What sets this rig apart is the engineering that went into it. We used finite element analysis on the mast, frame, and drawworks to save weight without sacrificing strength — critical when you're already pushing the limits of what a truck chassis can carry. Multiple patented technologies are built into the design.
The parallelogram substructure rigs up quickly and provides a stable working platform. And because it's still a mobile truck-mounted unit, you retain the mobility that makes workover rigs so cost-effective compared to skid-mounted drilling rigs.
Choosing the Right Workover Rig Size
For ultra-deep wells (5,000m+) or operations involving heavy fishing, milling, and complex completion work, the 650HP unit delivers the maximum pulling capacity in our mobile workover lineup.
If your wells are shallower and operations are less demanding, the 550HP Workover Rig offers a more cost-effective solution. For even heavier duty or deeper drilling work, you'll need to move up to our 750HP Workover Rig or skid-mounted drilling rigs.
FAQs
Q: What's the maximum hook load of this rig?
A: The maximum static hook load is 1,470 kN — the highest in our mobile workover rig lineup.
Q: What chassis is used?
A: This rig is built on a 12×8 self-propelled workover rig chassis, designed to handle the weight of the 35m mast and high-capacity drawworks.
Q: What makes this rig different from smaller models?
A: It incorporates multiple patented technologies, finite element analysis design, and a parallelogram substructure — features reserved for our top-tier heavy-duty rigs.
Q: What operations is it used for?
A: Deep well overhaul, heavy workover, well testing, salvage/fishing work, and pump inspection on major onshore oil fields.
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Drill line Diameter mm (in)/effective
number n
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Φ29 (1 1/8")
/8
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Mast hoisting speed m/s
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1.4
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|
Traveling system type
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4×5
|
|
Engine
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CAT C18
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|
Transmission
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ALLISION M6620AR
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Clearance height of mast m
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35m
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