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Workover Rigs

450HP Workover Rig (XJ450)

The 450HP Workover Rig (XJ450) is a high-grade heavy-duty truck-mounted workover unit, serving as a core upgraded heavy-duty model above the 350HP rig in the full product lineup. Adopting a premium 450HP high-torque diesel power assembly and heavy-duty 12×8 all-terrain self-propelled chassis, this rig integrates ultra-strong power output, super heavy-load lifting capacity and excellent cross-country mobility, breaking the operation limits of medium-heavy duty workover rigs. Equipped with a 34m high-strength reinforced lattice mast and upgraded 6×7 super heavy-load hoisting system, it stably supports 3200m deep well workover and heavy overhaul operations, fully covering high-intensity and complex downhole working conditions that 350HP rigs cannot handle. Featuring fully modular integrated layout, premium imported transmission system and optimized 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 oilfield deep well maintenance, deep reservoir heavy repair, high-pressure wellbore treatment and long-cycle cluster operation projects, delivering superior heavy-load stability, extreme condition adaptability and long-term comprehensive cost-effectiveness.

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Core advantages

Designed around the operating requirement.

450HP Ultra-High-Torque Power Drive System

Configured with industrial-grade high-efficiency diesel power unit and matched heavy-duty professional transmission assembly, outputting stable 450HP rated power and massive low-speed torque reserve. Compared with 350HP rigs, it features explosive power surplus, quicker hoisting response speed and more reliable long-term full-load continuous operation, completely meeting the stringent power demands of 3200m deep well heavy overhaul, high-pressure downhole operation and high-resistance complex wellbore treatment.

1125kN Super Heavy-Duty Lifting Performance

Adopts upgraded 6×7 multi-rope super heavy-load travelling system and integral thickened forged high-strength load-bearing components, with a maximum hook load reaching 1125kN and rated hook load up to 1000kN. It perfectly copes with extreme heavy-load working conditions including large-scale casing replacement, severe wax blockage remediation, complex stuck pipe salvage and deep well heavy tripping operations, fully adapting to high-intensity deep well overhaul scenarios of large oilfields.

Premium 12×8 All-Terrain Heavy Chassis

Equipped with customized 12×8 super-heavy self-propelled drive chassis, featuring ultra-strong 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 deep well cluster operations.

Intelligent Integrated Compact Layout

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

Ultra-High Industrial Reliability & Low Lifecycle Maintenance

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

Ultimate Extreme Environment Adaptability

Equipped with oversized high-efficiency circulation heat dissipation system, upgraded wear-resistant and dust-proof structure and full-coverage military-grade anti-corrosion and low-temperature resistant coating. The expanded adaptive temperature range enables stable 24-hour uninterrupted full-load operation in -30℃ 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	450HP Workover Rig (XJ450)
Product line	Workover Rigs

Technical Specifications
The depth of workover		5500m (73mm tubing) 4500m (73mm DP)
The max. loading		1125kN
The type of traveling system		4×5
Diameter of rope		Φ26
Engine		CAT C15/540 bhp
The model of gear box		Allison M5620AR
Mast	Clean height	32m
	The max. static loading	1200kN
Drawwork	The max. pull of fast line	180KN (the second floor)
	Diameter of wire line	26mm
	The max. rotate speed	450rpm
Drilling floor	Height	3.5m /4m/ 4.5 (can choose)
	Model of rotary table	ZP175

Application

Where this equipment is used.

Super heavy-load overhaul and standardized refined maintenance operations for 0-3200m deep oil and gas wells in large-scale core oilfields
Ultra-complex wellbore treatment including heavy wax deposition removal, large-diameter casing replacement, severe stuck pipe salvage and high-pressure deep well flushing
Long-cycle heavy-duty operation and frequent cross-region relocation of large deep well clusters and remote harsh oilfield zones
Long-term deep well heavy repair, deep reservoir stimulation, renovation and capacity expansion maintenance of mature deep oilfield blocks
Field operation scenarios with ultra-complex road conditions, extreme harsh climates and high-intensity continuous operation demands
High-altitude severe cold regions, high-temperature desert zones, mountainous hilly terrains and remote large-scale 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 super heavy-load hook parameters and deep well hoisting performance to adapt to 3200m deep well heavy overhaul industry 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 bearing structure to adapt to mountainous, muddy and desert ultra-complex road conditions
Configure matched super-large-flow mud circulation and high-efficiency 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 deep well 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 450HP XJ450 rig have compared with the 350HP model?

The 450HP XJ450 super heavy-duty workover rig features a fully upgraded 450HP high-torque power system and 1125kN maximum hook load, supporting 3200m deep well operations, which far exceeds the 2400m operation limit of 350HP rigs. It is equipped with a higher-grade imported heavy-duty transmission and 12×8 ultra-all-terrain chassis, delivering stronger power reserve, super heavy-load capacity and extreme environmental adaptability. It can undertake high-intensity deep well heavy overhaul projects that 350HP medium-heavy rigs cannot support, achieving comprehensive performance iteration and upgrade.

Can the XJ450 rig adapt to ultra-complex terrain relocation?

Absolutely. Adopting a customized 12×8 super-heavy all-terrain self-propelled chassis, the rig has ultra-strong 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 operation switching of deep well clusters in mountainous, muddy, desert and other harsh terrain areas.

What is the standard working depth of the XJ450 workover rig?

The standard XJ450 rig is professionally designed for 3200m deep well super heavy-load workover operations. We can flexibly adjust core power, hoisting parameters and matching configurations according to customer on-site working conditions to meet customized deep well operation requirements.

What exclusive working advantages does the 450HP rig possess?

The XJ450 rig is positioned for large oilfield deep well high-intensity heavy overhaul. It features ultra-high torque output and super heavy-load lifting capacity, independently completing high-difficulty operations such as deep well large casing replacement, severe wax blockage removal and complex stuck pipe salvage. It solves the problems of insufficient power and load capacity of medium and medium-heavy duty rigs in deep well complex working conditions.

What professional after-sales services are provided for the XJ450 rig?

We provide complete professional deep well equipment installation drawings, full-set authoritative operation and maintenance manuals and original spare parts long-term supply. Free permanent remote technical guidance is available. For large-scale 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 450HP XJ450 super heavy-duty workover rigs, with all products strictly manufactured in accordance with API 4F, API 7K and international petroleum machinery authoritative standards. Targeted at large oilfield deep well heavy-load overhaul and extreme harsh environment long-cycle operation scenarios, this rig achieves full-dimensional performance upgrade on the basis of 350HP rigs, perfectly filling the market gap between medium-heavy duty workover rigs and large-scale heavy-duty operation equipment. Adopting premium imported heavy-duty transmission system and customized 12×8 reinforced all-terrain chassis, the equipment maintains stable full-load operation output and ultra-low failure rate under long-term extreme working conditions. Every XJ450 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 deep well heavy-duty operation efficiency and reduce long-term comprehensive oilfield maintenance costs.

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