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Workover Rigs

550HP Workover Rig (XJ550)

The 550HP Workover Rig (XJ550) is a top-tier ultra-heavy-duty truck-mounted workover unit, serving as the highest-grade conventional workover rig in the full product lineup and a comprehensive performance upgrade over the 450HP model. Adopting a premium 550HP high-torque diesel power assembly and heavy-duty 12×8 all-terrain self-propelled chassis, this rig integrates ultimate power output, ultra-large heavy-load lifting capacity and superior cross-country mobility, breaking the deep-well operation limits of standard heavy-duty workover rigs. Equipped with a 32m high-strength integral lattice mast and upgraded 7×8 ultimate heavy-load hoisting system, it stably supports 5800m ultra-deep well workover and 7000m deep well service operations, fully covering super heavy-load and high-difficulty downhole working conditions that 450HP rigs cannot handle. Featuring fully modular integrated layout, premium professional transmission system and upgraded intelligent hydraulic control logic, the whole machine strictly complies with API 4F, API 7K and global petroleum machinery industry standards. It is widely deployed for large-scale core oilfield ultra-deep well maintenance, deep reservoir heavy overhaul, high-pressure ultra-deep wellbore treatment and long-cycle high-intensity cluster operation projects, delivering industry-leading heavy-load stability, extreme condition adaptability and long-term comprehensive cost-effectiveness.

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Core advantages

Designed around the operating requirement.

550HP Ultimate High-Torque Power Drive System

Configured with industrial-grade high-efficiency C13 diesel power unit and matched professional heavy-duty transmission assembly, outputting stable 550HP rated power and massive low-speed torque reserve. Compared with 450HP rigs, it features explosive full-range power surplus, faster hoisting response speed and more reliable long-duration full-load continuous operation, completely meeting the ultra-stringent power demands of 5800m ultra-deep well heavy overhaul, high-pressure downhole operation and high-resistance complex wellbore treatment.

1350kN Ultra-Large Heavy-Lift Performance

Adopts upgraded 7×8 multi-rope ultimate heavy-load travelling system and integral fully forged thickened high-strength load-bearing components, with a maximum static hook load reaching 1350kN and rated hook load up to 1000kN. It perfectly copes with ultra-heavy-load working conditions including large-scale ultra-deep casing replacement, severe thick wax blockage remediation, complex deep stuck pipe salvage and ultra-deep well heavy tripping operations, fully adapting to high-intensity ultra-deep well overhaul scenarios of super-large core oilfields.

Reinforced 12×8 All-Terrain Heavy Chassis

Equipped with customized reinforced 12×8 super-heavy self-propelled drive chassis, featuring ultimate bearing capacity, outstanding cross-country trafficability and optimized flexible steering performance. It supports rapid integral cross-well and cross-region relocation without auxiliary hoisting and transportation equipment, adapting to mountainous, muddy, desert and other ultra-complex road conditions for dispersed ultra-deep well cluster operations.

Premium Intelligent Integrated Compact Layout

Scientifically and centrally integrates high-power drive, heavy-load hydraulic, ultra-heavy hoisting and intelligent electric control modules with standardized compact layout, effectively saving on-site construction space and improving on-site adaptability. Equipped with full-automatic hydraulic mast erecting/folding system and ergonomic integrated intelligent operation platform, it simplifies complex operation procedures, reduces manual labor intensity and greatly improves overall construction efficiency and multi-level operational safety redundancy.

Supreme Industrial Reliability & Low Lifecycle Maintenance

Adopts world-renowned brand core transmission and control components, paired with optimized fully reinforced heavy-duty mechanical structure, ensuring ultra-stable operating performance and extremely low failure rate under years of long-term heavy-load cycles. Universal vulnerable parts configuration and standardized global maintenance channels simplify daily inspection and upkeep, significantly reducing long-term operation and spare parts investment for large-scale ultra-deep well maintenance projects.

Full-Coverage Extreme Environment Adaptability

Equipped with oversized high-efficiency circulation heat dissipation system, upgraded heavy-duty wear-resistant and dust-proof structure and full-coverage military-grade anti-corrosion, low-temperature and weather-resistant coating. The expanded adaptive temperature range enables stable 24-hour uninterrupted full-load operation in -35℃ severe cold plateaus, 55℃ high-temperature deserts, drought Gobi areas and hilly mountainous regions, adapting to global ultra-harsh oilfield working environments.

Product Overview
Product	550HP Workover Rig (XJ550)
Product line	Workover Rigs

Technical Specifications
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.

Ultimate super heavy-load overhaul and high-standard refined maintenance operations for 0-5800m ultra-deep oil and gas wells in super-large core oilfields
Ultra-high-difficulty complex wellbore treatment including ultra-deep heavy wax deposition removal, large-diameter ultra-deep casing replacement, severe deep stuck pipe salvage and high-pressure ultra-deep well flushing
Long-cycle ultra-high-intensity heavy-duty operation and frequent cross-region relocation of large-scale ultra-deep well clusters and remote harsh oilfield zones
Long-term ultra-deep well heavy repair, deep reservoir stimulation, renovation and capacity expansion maintenance of mature ultra-deep oilfield blocks
Field operation scenarios with ultra-complex road conditions, extreme harsh climates and year-round uninterrupted high-intensity heavy-load operation demands
High-altitude severe cold regions, high-temperature desert zones, mountainous hilly terrains and remote large-scale ultra-deep well oilfield environments

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.

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Configuration

Options for a matched equipment scope.

Available configurations can be matched to the equipment model, operating conditions and project requirements.

Customize ultra-heavy hook parameters and ultra-deep well hoisting performance to adapt to 5800m ultra-deep well heavy overhaul and 7000m deep well service standards
Upgrade full intrinsically safe explosion-proof high-grade electrical system to meet top-level safety specifications for Class 0 hazardous explosion zones
Optimize 12×8 heavy chassis travelling parameters and reinforced bearing structure to adapt to mountainous, muddy and desert ultra-complex road conditions
Configure matched super-large-flow high-pressure mud circulation and high-efficiency ultra-deep well flushing auxiliary system for full-coverage complex wellbore treatment
Upgrade industrial-grade intelligent real-time data monitoring, dynamic load feedback and automatic fault early warning & diagnosis system
Customize professional ultra-deep well super heavy-duty operation manuals and standardized senior operator systematic training documents
Adopt military-grade full anti-rust, anti-corrosion, dust-proof and weather-resistant coating for long-term extreme outdoor heavy-load operation
Equip ultra-low-temperature rapid start-up system and full-machine integrated heat preservation device for high-cold oilfield stable operation

Buyer questions

Frequently asked about this equipment.

The following questions address common equipment selection and operating considerations.

What core upgrades does the 550HP XJ550 rig have compared with the 450HP model?

The 550HP XJ550 ultra-heavy-duty workover rig features a fully upgraded 550HP ultimate high-torque power system and 1350kN maximum static hook load, supporting 5800m ultra-deep well workover and 7000m deep well service, which far exceeds the 3200m operation limit of 450HP rigs. It is equipped with an upgraded reinforced heavy-duty transmission and optimized 12×8 all-terrain chassis, delivering explosive power reserve, ultimate super heavy-load capacity and stronger extreme environmental adaptability. It can undertake ultra-high-intensity ultra-deep well heavy overhaul projects that 450HP heavy-duty rigs cannot support, achieving comprehensive top-tier performance iteration and upgrade.

Can the XJ550 rig adapt to ultra-complex terrain and long-distance relocation?

Absolutely. Adopting a reinforced 12×8 super-heavy all-terrain self-propelled chassis, the rig has ultimate road passing performance and flexible steering capability. It can realize rapid integral cross-well and cross-region transfer without auxiliary hoisting and transportation equipment, perfectly adapting to frequent high-intensity operation switching of ultra-deep well clusters in mountainous, muddy, desert and other harsh terrain areas.

What is the standard working depth of the XJ550 workover rig?

The standard XJ550 rig is professionally designed for 5800m ultra-deep well super heavy-load workover and supports up to 7000m deep well service operations. We can flexibly adjust core power, hoisting parameters and matching configurations according to customer on-site working conditions to meet customized ultra-deep well operation requirements.

What exclusive core advantages does the 550HP top-tier rig possess?

The XJ550 rig is positioned as the top-grade conventional ultra-deep heavy-duty workover equipment for super-large core oilfields. It features industry-leading ultra-high torque output and 1350kN super heavy-load lifting capacity, independently completing high-difficulty ultra-deep well operations such as large-scale deep casing replacement, severe thick wax blockage removal and complex deep stuck pipe salvage. It completely solves the problems of insufficient power and load capacity of medium and heavy-duty rigs in ultra-deep complex working conditions.

What professional after-sales services are provided for the XJ550 top-tier rig?

We provide complete professional ultra-deep well equipment installation drawings, full-set authoritative operation and maintenance manuals and long-term original spare parts supply. Free permanent remote technical guidance is available. For super-large core oilfield key projects, we can arrange senior petroleum engineering expert teams for on-site precision commissioning, installation guidance and one-on-one professional operator training services.

Supplier context

Why this product is considered.

We possess top-tier R&D and precision manufacturing capabilities for 550HP XJ550 ultra-heavy-duty workover rigs, with all products strictly manufactured in accordance with API 4F, API 7K and international petroleum machinery authoritative standards. Targeted at super-large core oilfield ultra-deep well super heavy-load overhaul and extreme harsh environment long-cycle high-intensity operation scenarios, this rig achieves full-dimensional ultimate performance upgrade on the basis of 450HP rigs, perfectly filling the market gap between conventional heavy-duty workover rigs and professional ultra-deep well operation equipment. Adopting premium customized heavy-duty transmission system and reinforced 12×8 all-terrain chassis, the equipment maintains stable full-load operation output and ultra-low failure rate under years of long-term extreme heavy-load working conditions. Every XJ550 rig undergoes strict factory full-load impact testing, 72-hour continuous operation debugging and multi-dimensional structural safety inspection before delivery. We provide full-process one-stop services including exclusive project scheme customization, standardized production, global safe shipping and professional on-site technical support, effectively helping customers improve ultra-deep well heavy-duty operation efficiency and reduce long-term comprehensive oilfield maintenance costs.

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