1350kN hook, 4×5 purchase
The traveling block runs 4×5 on Φ29mm wire rope for a 1350kN maximum hook and 1350kN mast static rating, the margin needed when pulling long 73mm tubing and drill strings from ultra-deep wells.
Workover Rigs
550HP Workover Rig (XJ550)
The XJ550 is rated at a 1350kN hook, the top of the conventional truck-mounted workover range, and it gets there with a Caterpillar C18 at 630 bhp through an Allison M6620AR rather than the C15 pack used one size below. The hoist is strung 4×5 on Φ29mm line under a 34m lattice mast whose 1350kN static capacity supports 7000m of 73mm tubing or 5800m of 73mm drill pipe. On the floor, a 4m workover deck and a ZP175 rotary table let it take on heavier casing and rotary-assisted jobs, while the drawworks holds 210kN of fast-line pull at the second floor and turns to 450rpm. A 12×8 all-terrain carrier moves the whole spread between ultra-deep clusters as one unit, so deep-well programs are serviced without rebuilding the rig on location.
Core advantages
Designed around the operating requirement.
CAT C18 at 630 bhp
Power steps from the C15 of the 450 class to a Caterpillar C18 rated 630 bhp, routed through an Allison M6620AR transmission, giving the torque to keep 7000m strings moving under full load.
34m mast for 7000m strings
A 34m clean-height lattice mast racks the stands of a 7000m (73mm tubing) program, with the 1350kN static limit set as the binding hoisting constraint.
210kN fast-line pull at 450rpm
The drawworks delivers 210kN of fast-line pull at the second floor and drums out to 450rpm, balancing hard pull on heavy strings with reasonable cycle speed on lighter runs.
4m floor with ZP175 rotary
A 4m drilling deck carries a ZP175 rotary table, so the rig can add rotary torque and casing handling on ultra-deep workover that a plain service rig cannot.
12×8 carrier for ultra-deep clusters
A 12×8 all-terrain self-propelled chassis hauls the mast, drawworks and floor as one road load, moving between remote ultra-deep well clusters without auxiliary hoisting or a separate rig-up crew.
| Product | 550HP Workover Rig (XJ550) |
|---|---|
| Product line | Workover Rigs |
| The depth of workover | 7000m (73mm tubing) 5800m (73mm DP) | |
| The max. loading | 1350kN | |
| The type of traveling system | 4×5 | |
| Diameter of rope | Φ29 | |
| Engine | CAT C18/630 bhp | |
| The model of gear box | Allison M6620AR | |
| Mast | Clean height | 34m |
| The max. static loading | 1350kN | |
| Drawwork | The max. pull of fast line | 210KN (the second floor) |
| Diameter of wire line | 29mm | |
| The max. rotate speed | 450rpm | |
| Drilling floor | Height | 4m |
| Model of rotary table | ZP175 | |
Application
Where this equipment is used.
- Deep workover on 73 mm tubing to 7000 m and 73 mm drill pipe to 5800 m, with the 1350 kN hook rating carrying the heaviest strings in the conventional truck-mounted range.
- Large-diameter casing replacement, rotary-assisted pulls and batch fishing through the ZP175 table on deep wells.
- Long-cycle repair and renovation programmes where the CAT C18 / Allison M6620AR drivetrain sustains repeated hoisting cycles.
- Campaign relocation between deep clusters: the 12×8 all-terrain chassis moves the rig as one load over hilly or muddy access.
- High-angle well intervention where the 34 m mast and 4 m floor give headroom for long stands and a stacked BOP.
Next step
Send the operating requirement.
For a useful technical response, include the target well conditions, operating depth or pressure, expected quantity, destination and any required configuration.
Send an InquiryConfiguration
Options for a matched equipment scope.
Available configurations can be matched to the equipment model, operating conditions and project requirements.
- Hook and hoist margin: confirm the 1350 kN hook rating, 4×5, Φ29 mm line arrangement and mast static load against the heaviest string.
- Rotary and floor: specify the ZP175 table and 4 m floor height against casing rotation and BOP stack requirements.
- Power train: the CAT C18 / Allison M6620AR package is the reference; regional emission and safety options can be added.
- Well-control interface: mast clearance and floor layout verified against the BOP and handling equipment for the region.
- Climate provisions for 550HP Workover Rig (XJ550): low-temperature start, heat preservation and coating are set against the site conditions.
- Support package for 550HP Workover Rig (XJ550): manuals, factory test report and first-period spares; commissioning and crew training confirmed at order time.
Buyer questions
Frequently asked about this equipment.
Buyers evaluating the XJ550 usually ask about the 7,000 m tubing depth, 1,350 kN hook and 34 m mast static rating.
What core upgrades does the 550HP XJ550 rig have compared with the 450HP model?
The step from XJ450 to XJ550 is powertrain and hoisting margin: the engine moves to a Caterpillar C18 at 630 bhp behind an Allison M6620AR, the hook rises to 1350kN on a 4×5, Φ29mm purchase, and the mast clears 34m with 1350kN static capacity. That supports 7000m of 73mm tubing or 5800m of 73mm drill pipe, against the 450 shallower envelope, with a ZP175 rotary on the 4m deck for heavier downhole work.
Can the XJ550 rig adapt to ultra-complex terrain and long-distance relocation?
The 12×8 carrier drives the whole spread between wells as one load: once the mast is lowered and outriggers stowed, the drawworks, 4 m floor and ZP175 rotary stay rigged for the next location, which removes the auxiliary transport and re-rigging time on mountainous or desert access roads.
What is the standard working depth of the XJ550 workover rig?
Depth is string-dependent: 7000m with 73mm tubing, or 5800m with 73mm drill pipe, inside the 1350kN hook and 1350kN mast static limits on the 4×5, Φ29mm hoist. Because the C18/M6620AR drivetrain and 34m mast define the margin, unusual programs can re-specify hoisting and deck options at order time, documented in the factory test report.
What are the main advantages of the 550HP XJ550 rig?
The XJ550's advantage is that the conventional truck-mounted form keeps a 1350 kN envelope: 7000 m of 73 mm tubing or 5800 m of 73 mm drill pipe inside a 1350 kN hook and a 34 m mast rated to the same static figure, with a ZP175 rotary on the 4 m deck. The C18 at 630 bhp behind the Allison M6620AR is the same drivetrain family as the heavy fleet, so spares follow one catalog and the service pattern is standard. For a program that sits between the 450HP class and the twin-power 750HP class, the XJ550 delivers the deep-workover envelope without the twin-engine maintenance scope.
What after-sales services are provided for the XJ550 rig?
The XJ550 ships with installation drawings, operation and maintenance manuals, and a first-period spare list for the Φ29mm line, C18 filters and M6620AR service parts. Remote technical guidance is free for the life of the unit, and because the C18/M6620AR drivetrain is standard across the heavy fleet, spares follow one catalog. On-site commissioning and senior operator training are arranged for the first ultra-deep deployment.
Procurement information
Ordering this equipment.
Commercial terms are confirmed in the quotation for the exact configuration, quantity and destination.
Certification & standards
Manufactured to API 4F and API 7K under ISO 9001:2015 with a modular layout, the standard transmission and hydraulic control package; confirm the applicable standards and certificates in the inquiry.
Documentation
Operation manuals, spare-parts catalog and factory acceptance test report are supplied in English and Chinese; on-site commissioning and operator training can be arranged at the Jingzhou plant or at the well site.
Lead time
Confirmed in the quotation according to configuration, quantity and destination.
Warranty & after-sales
Manuals, conventional spare parts and remote technical guidance are included; on-site commissioning and operator training can be arranged on request.
Payment & delivery
Payment schedule, Incoterms, port and packaging are agreed in the sales contract.
Spare parts
A recommended spare-parts list for the first operating period is provided with the quotation.
Related equipment
Continue browsing this product line.
Explore nearby products to compare equipment scope before sending an inquiry.
150HP Workover Rig
Rated at a 585kN maximum hook on a φ22mm line strung six lines, the XJ150 is sized for the shallow end of the workover fleet rather than deep-service duty.
250HP Workover Rig (XJ250)
The XJ250 is the first truck in the fleet where hoisting speed starts to matter: a 675kN maximum hook on a φ22mm, six-line train runs the hook at up to 1.5 m/s, pulling 3200m of 2 7/8″ upset tubing in less time than a…
350HP Workover Rig (XJ350)
The XJ350 opens the heavy-duty tier: a 900kN maximum load on a 650kN nominal hook, reeved eight lines over Φ26mm drill line under a 23.5m mast.