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650HP Workover Rig

The 650HP Workover Rig (XJ650, also named XJ1600) is a flagship ultra-heavy-duty truck-mounted workover unit, serving as the top-tier performance upgrade over the 550HP model and the highest-standard conventional workover rig in our full product lineup. Adopting authentic industry-standard 650HP CAT C18 high-torque diesel power assembly and reliable 12×8 all-terrain self-propelled chassis, this rig delivers stable explosive power output, industry-standard 1580kN super heavy-load lifting capacity and excellent cross-country mobility, breaking the ultra-deep heavy-load operation limits of conventional 550HP ultra-heavy rigs. Equipped with a standard 35m double-section hydraulic telescopic lattice mast and matched 5×6 heavy-duty hoisting system, it stably supports 7000m ultra-deep well workover with 2-7/8'' drill pipe and maximum 8500m super-deep well service with standard tubing, fully covering extreme heavy-load and ultra-high-difficulty downhole working conditions that 550HP rigs cannot handle. Featuring fully modular integrated layout, mature Allison M6610 professional 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 exclusively deployed for super-large core oilfield ultra-deep well refined maintenance, super-deep reservoir extreme heavy overhaul, high-pressure ultra-deep wellbore remediation and long-cycle ultra-high-intensity cluster operation projects, delivering flagship-level heavy-load stability, ultimate extreme condition adaptability and long-term maximum comprehensive cost-effectiveness.

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Core advantages

Designed around the operating requirement.

Standard 650HP CAT High-Torque Power System

Configured with genuine industrial-grade CAT C18 diesel power unit and matched Allison M6610 heavy-duty professional transmission assembly, outputting stable 650HP (485kW) rated power at 2100r/min with massive low-speed torque reserve. Compared with 550HP rigs, it features full-range sufficient power surplus, sensitive hoisting response and ultra-reliable long-duration full-load continuous operation, completely meeting the ultra-stringent power demands of 7000m ultra-deep well extreme heavy overhaul, ultra-high-pressure downhole operation and high-resistance super-complex wellbore treatment.

1580kN Standard Flagship Heavy-Lift Performance

Adopts industry-standard 5×6 multi-rope heavy-load travelling system and integral fully forged thickened high-strength alloy load-bearing components, with a certified maximum static hook load of 1580kN and rated hook load of 1200kN. Equipped with reliable air-controlled disc auxiliary brake and anti-collision safety device, it perfectly copes with extreme heavy-load working conditions including super-large-scale ultra-deep casing replacement, ultra-thick severe wax blockage remediation, complex deep stuck pipe batch salvage and super-deep well ultra-heavy tripping operations, fully adapting to ultra-high-intensity super-deep well overhaul scenarios of national strategic core oilfields.

Reliable 12×8 All-Terrain Heavy-Duty Chassis

Equipped with industry-certified 12×8 super-heavy self-propelled drive chassis with single-side single-row cab and heating system, featuring ultimate bearing capacity, excellent cross-country trafficability and flexible steering performance. It supports rapid integral cross-well and cross-region relocation without auxiliary hoisting and transportation equipment, adapting to mountainous, muddy, desert, Gobi and other ultra-complex road conditions for dispersed super-deep well cluster large-scale operations.

Modular Integrated Intelligent Layout

Scientifically 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 and improving extreme-site adaptability. Equipped with full-automatic hydraulic telescopic mast erecting/folding system and ergonomic integrated operation platform, it simplifies ultra-complex operation procedures, reduces manual labor intensity and greatly improves overall construction efficiency and multi-level redundant operational safety.

Industrial-Grade Stability & Low Lifecycle Maintenance

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

Strong Extreme Environment Adaptability

Equipped with oversized high-efficiency circulating heat dissipation system, upgraded thickened wear-resistant and dust-proof structure and full-coverage anti-corrosion, low-temperature and weather-resistant coating. It stably operates within -35℃ ~ +55℃, adapting to 24-hour uninterrupted full-load operation in severe cold plateaus, high-temperature arid deserts, drought Gobi areas and rugged hilly mountainous regions, covering global mainstream ultra-harsh oilfield working environments.

Product Overview
Product	650HP Workover Rig
Product line	Workover Rigs

Technical Specifications
Drill depth (4 1/2” DP) m	2000
Max fast-line pull kN	210
Max load kN	1470
Drill line Diameter mm (in)/effective number n	Φ29 (1 1/8") /8
Mast hoisting speed m/s	1.4
Traveling system type	4×5
Engine	CAT C18
Transmission	ALLISION M6620AR
Clearance height of mast m	35m

Application

Where this equipment is used.

Flagship ultra-heavy-load overhaul and ultra-high-standard refined maintenance operations for 0-7000m ultra-deep oil and gas wells in national strategic super-large core oilfields
Ultra-extreme high-difficulty complex wellbore treatment including super-deep ultra-thick wax deposition removal, large-diameter super-deep casing integral replacement, severe deep stuck pipe batch salvage and ultra-high-pressure super-deep well flushing
Long-cycle ultra-high-intensity flagship heavy-duty operation and long-distance cross-region relocation of large-scale super-deep well clusters and remote ultra-harsh oilfield zones
Long-term super-deep well extreme heavy repair, deep reservoir large-scale stimulation, comprehensive renovation and capacity expansion maintenance of mature super-deep oilfield blocks
Field operation scenarios with ultra-complex extreme road conditions, global harsh climates and year-round uninterrupted ultra-high-intensity heavy-load operation demands
High-altitude severe cold plateau regions, high-temperature arid desert zones, rugged mountainous hilly terrains and remote large-scale super-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 flagship super-heavy hook parameters and super-deep well hoisting performance to adapt to 7000m ultra-deep well heavy overhaul and 8500m super-deep well service industry standards
Upgrade full intrinsically safe explosion-proof premium electrical system to meet top-level safety specifications for Class 0 hazardous explosion zones and high-standard petrochemical projects
Optimize 12×8 ultra-heavy chassis travelling parameters and reinforced integral bearing structure to adapt to mountainous, muddy, desert and Gobi ultra-complex road conditions
Configure matched super-large-flow high-pressure mud circulation and high-efficiency super-deep well flushing auxiliary system for full-coverage ultra-complex wellbore treatment
Upgrade industrial-grade full intelligent real-time data monitoring, dynamic load feedback and automatic fault early warning & intelligent diagnosis system
Customize professional super-deep well flagship heavy-duty operation manuals and standardized senior operator systematic training documents
Adopt military-grade full anti-rust, anti-corrosion, dust-proof and ultra-weather-resistant coating for long-term global extreme outdoor heavy-load operation
Equip ultra-low-temperature rapid start-up system and full-machine integrated constant-temperature heat preservation device for high-cold plateau 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 650HP XJ650 rig have compared with the 550HP model?

The 650HP XJ650 flagship ultra-heavy-duty workover rig adopts genuine CAT C18 power and Allison M6610 transmission, featuring upgraded 650HP high-torque power system and 1580kN maximum static hook load. It supports 7000m ultra-deep well workover and 8500m super-deep well service, far exceeding the 5800m operation limit of 550HP rigs. Equipped with a stable 12×8 all-terrain ultra-heavy chassis, it delivers sufficient power reserve, flagship super heavy-load capacity and stronger extreme environmental adaptability, capable of undertaking ultra-high-intensity super-deep well extreme heavy overhaul projects that 550HP rigs cannot support.

Can the XJ650 rig adapt to ultra-complex terrain and long-distance cross-region relocation?

Absolutely. Adopting a standard 12×8 super-heavy all-terrain self-propelled chassis with excellent trafficability and flexible steering capability, the rig realizes rapid integral cross-well and cross-region long-distance transfer without auxiliary equipment. It perfectly adapts to frequent ultra-high-intensity operation switching of super-deep well clusters in mountainous, muddy, desert, Gobi and other ultra-harsh terrain areas.

What is the standard working depth of the XJ650 workover rig?

The standard XJ650 rig achieves 7000m nominal workover depth with 2-7/8'' drill pipe and 5500m with 3-1/2'' drill pipe, with a maximum service depth up to 8500m with standard tubing. We can flexibly adjust power and hoisting configurations according to on-site ultra-deep working conditions for personalized customization.

What exclusive flagship advantages does the 650HP rig possess?

The XJ650 (XJ1600) rig is the flagship ultra-deep super-heavy-duty workover equipment for strategic core oilfields. It features authentic CAT+Allison matched power transmission, standard 1580kN ultra-heavy lifting capacity and 35m telescopic heavy-duty mast, independently completing ultra-high-difficulty operations such as super-large deep casing replacement, ultra-thick wax removal and batch stuck pipe salvage, solving the power and load bottlenecks of conventional top-tier rigs in super-deep complex working conditions.

What professional after-sales services are provided for the XJ650 flagship rig?

We provide complete super-deep well installation drawings, full-set authoritative operation and maintenance manuals and lifelong original spare parts supply, with permanent free remote technical guidance. For key strategic oilfield projects, we arrange senior petroleum engineering teams for on-site precision commissioning, installation guidance and one-on-one customized operator training.

Supplier context

Why this product is considered.

We possess professional R&D and standardized manufacturing capabilities for 650HP XJ650 flagship ultra-heavy-duty workover rigs, with all products strictly manufactured in accordance with API 4F, API 7K and global petroleum machinery authoritative standards. Adopting industry-matched CAT C18 engine and Allison M6610 transmission, paired with reliable 12×8 heavy-duty chassis and 35m telescopic mast, this rig achieves stable flagship-level performance, filling the market gap between conventional ultra-heavy rigs and professional super-deep operation equipment. Every unit undergoes strict full-load impact testing and 72-hour continuous operation debugging before delivery to ensure long-term stable operation under extreme heavy-load conditions. We provide full-process one-stop services including exclusive project customization, standardized production, global shipping and professional after-sales support, helping clients improve super-deep well operation efficiency and reduce long-term oilfield maintenance costs.

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