ZJ 40（850hp） CZ Truck-Mounted Drilling Rigs（Workover depth: 7,500 meters）

Mobile Drilling and Workover Rig for Onshore Oilfield Operations
The ZJ40 CZ truck-mounted drilling rig is designed for mobile onshore drilling and workover operations. The rig integrates the main drilling system on a reinforced truck chassis, making it suitable for projects requiring faster relocation, reduced rig-up time and practical field mobility.

According to the project configuration, the rig can be used for oil well drilling operations up to 4,000 meters with 114 mm drill pipe, or up to 3,200 meters with 127 mm drill pipe. The product page also identifies the rig with a workover depth of up to 7,500 meters. Final drilling and workover capability should always be confirmed according to the well program, drill pipe or tubing size, hook load requirement and actual operating conditions.

This rig is suitable for oilfield contractors, workover service companies and project owners that need a truck-mounted drilling rig with strong mobility, reliable hoisting capacity, dual-engine power redundancy and supporting mud circulation capability.

The ZJ40 CZ truck-mounted drilling rig is a mobile rig solution for oilfield drilling and workover projects. Compared with skid-mounted rigs, the truck-mounted structure provides better relocation efficiency and can reduce the time required for moving between well sites. This is especially valuable for field operations where multiple wells are distributed across a wide operating area.

The rig adopts a reinforced 14 x 10 chassis for load distribution and cross-country mobility. The power system uses a dual-engine parallel arrangement combined with a compound transmission system. The two diesel engines can work independently or in parallel, improving redundancy and maintenance flexibility during field operation.

The 39-meter derrick, main frame and key structural components are designed for durability and reduced relocation weight. The foldable drill floor is designed for fast setup and stable support during drilling or workover operations.

The ZJ40 CZ truck-mounted drilling rig can be considered for the following applications:

• Mobile onshore oilfield drilling projects
• Oil well drilling operations within the confirmed depth range
• Workover operations requiring high mobility
• Oilfield service projects with frequent rig relocation
• Remote field operations requiring truck-mounted transportation
• Exploration or development wells where modular relocation is important
• Projects requiring a complete rig package with mud pumps and auxiliary systems

Before quotation, the rig configuration should be reviewed according to drilling depth, workover depth, drill pipe or tubing size, casing program, mud pump requirement, BOP pressure rating, site road condition, local maintenance capability and destination logistics.

The following specifications are based on the current product page and should be confirmed before final website publishing, quotation or contract signing.

Reinforced Truck Chassis
The rig is mounted on a reinforced 14 x 10 truck chassis. The chassis is designed for heavy equipment loading, field mobility and relocation between well sites. For international projects, road conditions, axle load limitations, site access and local transportation regulations should be reviewed before final configuration.
 

Dual-Engine Parallel Power System
The rig features a dual-engine parallel operation power system. The engines can operate independently or together according to operational requirements. This arrangement improves operational flexibility and provides better redundancy when one engine requires maintenance or reduced-load operation.
 

Compound Transmission System
The power system is integrated with a compound transmission system based on gear transfer cases. The transmission arrangement should be confirmed according to the required drawworks operation, rotary table performance, mud pump matching and local maintenance capability.
 

Derrick and Drill Floor
The rig is equipped with a K-shape derrick with an effective height of approximately 43 meters. The foldable drill floor is designed for quick setup and stable support during drilling and workover operations.
 

Drawworks and Braking System
The drawworks is the main hoisting system of the rig. The braking system includes a hydraulic disk brake as the main brake and an Eaton pneumatically controlled water-cooling auxiliary brake as backup. This combination supports operational safety during hoisting and lowering operations.
 

Rotary System
The rotary table has a reference opening of 698.5 mm / 27 1/2 in. The final rotary table gear arrangement and drive configuration should be confirmed according to drilling operation requirements and the selected rig configuration.
 

Mud Circulation System
The rig can be equipped with 2 x 1300 HP drilling mud pumps. Mud pump configuration should be reviewed according to hole size, required flow rate, operating pressure and the drilling program.
Supporting mud circulation equipment may include mud tanks, shale shakers, desander, desilter, degasser, centrifuge, mud agitators, mud guns, mixing hopper, pipelines and high-pressure mud manifold.
 

Solids Control System
The current reference effective volume of the solids control system is 260 m3. The final layout, tank quantity, equipment arrangement and transportation split should be confirmed according to the drilling program and site requirements.
 

Well Control Equipment
Well control equipment can be configured according to the required pressure rating and well program. Optional equipment may include BOP stack, BOP control unit, choke manifold, kill manifold, drilling spool, spacer spool, high-pressure valves and associated pipelines.

Before purchasing a ZJ40 CZ truck-mounted drilling rig, most international buyers carefully review the following points:

• Whether the rig is intended mainly for drilling, workover or combined operations
• Whether the drilling depth and workover depth match the customer's well program
• Whether the hook load is suitable for the expected operation
• Whether the chassis can match local road and field transportation conditions
• Whether the dual-engine power system is suitable for local operation and maintenance
• Whether mud pumps, solids control equipment and well control equipment are included
• Whether the BOP pressure rating meets the project requirement
• Whether the rig can be inspected before shipment
• Whether spare parts, manuals and technical documents are available
• Whether warranty terms are clearly defined before contract signing
• Whether shipping dimensions, weight and packing details can be provided
• Whether real equipment photos, videos and inspection records are available for review

For truck-mounted drilling rigs, real photos and videos are important because buyers need to understand the actual equipment condition, chassis structure, mast arrangement, drawworks layout, mud pump package and transportation preparation before making a purchasing decision.

According to project availability, the following media can be provided:

• Real equipment overview photos
• Truck chassis and carrier structure photos
• Derrick and drill floor photos
• Drawworks and braking system photos
• Mud pump package photos
• Solids control system photos
• Well control equipment photos
• Factory inspection videos
• Function testing videos
• Packing and loading videos
• Field installation or operation records, where available

Recommended media sections for this page:

1. ZJ40 CZ complete truck-mounted rig overview

2. 14 x 10 reinforced chassis details

3. Derrick and foldable drill floor details

4. Drawworks and braking system

5. Rotary table and rig floor equipment

6. Mud pump package

7. Solids control system

8. Well control equipment

9. Factory inspection and testing

10. Export loading and shipment

Rongli is engaged in the supply and integration of drilling rigs, mud pumps and oilfield drilling equipment. Our team supports customers with equipment selection, configuration review, technical documentation, factory inspection, export preparation and after-sales support.

For truck-mounted drilling rig projects, we focus on matching the rig configuration with the customer's operating depth, well program, relocation requirements, chassis mobility, mud circulation requirement, pressure rating, site conditions and transportation plan.

Our project support may include:

• Rig model selection
• Truck-mounted rig configuration review
• Chassis and mobility requirement review
• Mud pump matching
• Solids control system matching
• Well control equipment matching
• Auxiliary equipment coordination
• Technical document preparation
• Factory inspection support
• Export packing and loading support
• Spare parts recommendation
• After-sales technical support

The ZJ40 CZ truck-mounted drilling rig can be configured according to different drilling programs, workover requirements and site conditions. The final configuration may be adjusted based on the customer's required depth, hook load, road conditions, mud circulation requirements, well control pressure rating and transportation limitations.

Available customization options may include:

• Rig configuration adjustment according to drilling or workover requirements
• Mud pump quantity and model
• Solids control system layout
• BOP and manifold pressure rating
• Power and transmission arrangement
• Derrick and drill floor configuration
• Desert-area adaptation
• Cold-area adaptation
• High-temperature adaptation
• Painting color
• Customer logo
• Spare parts package
• Technical documentation package
• Export packing method

Warranty terms are defined according to the final equipment scope and contract. For new equipment, the warranty normally covers manufacturing defects within the agreed warranty period.

Our after-sales support may include:

• Remote technical support
• Video guidance
• Operation manuals
• Maintenance manuals
• Recommended spare parts list
• Spare parts supply
• Installation guidance
• Commissioning support
• Operator training, if required
• Technical support during equipment start-up

Consumable parts, improper operation, poor maintenance, unauthorized modification, third-party parts and damage caused by incorrect use are normally excluded from standard warranty coverage.

The ZJ40 CZ truck-mounted drilling rig requires careful transportation planning because the main rig system is integrated with the truck chassis, while supporting equipment, accessories and spare parts may need to be packed separately.

We can support customers with:

• Export packing
• Cargo split planning
• Estimated weight and volume
• Packing list preparation
• Factory loading arrangement
• Inland transportation to Chinese port
• FOB, CFR or CIF shipment support
• Loading photos and videos before shipment
• Export documentation according to contract requirements

The final shipping plan is prepared after the equipment scope, destination port, cargo dimensions and packing requirements are confirmed.

Inspection requirements should be defined according to the equipment scope and project requirements.

Typical inspection activities may include:

• Visual inspection
• Dimensional inspection
• Chassis and carrier inspection
• Structural inspection
• Derrick and drill floor inspection
• Drawworks and braking system inspection
• Rotary system inspection
• Function testing
• Pressure testing for applicable systems
• Transmission system inspection
• Electrical system inspection
• Mud pump testing
• Assembly inspection
• Pre-shipment inspection
• Third-party inspection, where required

Documentation can be supplied according to the actual equipment scope, manufacturer and contractual requirements.

Real project records help customers understand our equipment supply capability, export experience and project execution process. Selected project cases, delivery records and inspection photos can be provided for reference.
ZJ40 CZ Truck-Mounted Drilling Rig for Mobile Oilfield Operation
Project Type: Truck-mounted drilling and workover project
Equipment Scope: ZJ40 CZ truck-mounted rig, mud pumps, solids control equipment and auxiliary systems
Service Scope: Configuration review, equipment preparation, inspection support and export coordination
Project Highlight: The rig package was prepared according to the customer's depth requirement, relocation requirement, transportation plan and site operation conditions.
 

Truck-Mounted Rig Preparation and Export Delivery
Project Type: Mobile drilling equipment export project
Equipment Scope: Main truck-mounted rig system, auxiliary equipment and spare parts
Service Scope: Technical review, inspection coordination, loading plan and shipment preparation
Project Highlight: The customer was able to review equipment condition through real photos, videos and inspection records before shipment.
 

Mud Pump and Solids Control Equipment for Truck-Mounted Rig Package
Project Type: Supporting equipment supply for mobile rig operation
Equipment Scope: F-series mud pumps, solids control equipment, pipelines and spare parts
Service Scope: Model confirmation, configuration matching and export packing
Project Highlight: The equipment was supplied according to the customer's rig model and field maintenance requirements.
View More Project Cases

To prepare an accurate technical and commercial proposal, please provide the following information:

1. Required drilling depth

2. Required workover depth

3. Well type and project application

4. Drill pipe or tubing size

5. Hole size and casing program

6. Required hook load

7. Expected relocation frequency

8. Road and site conditions

9. Mud pump requirements

10. Required solids control capacity

11. Required BOP pressure rating

12. High-pressure manifold requirements

13. Local fuel and power conditions

14. Ambient temperature and site environment

15. Destination port

16. Required delivery time

17. Required inspection standard

18. Any customer-specific technical specification

Send us your drilling program, workover requirement, required depth, well control requirements, site road conditions and destination port.
Our team will review your project requirements and prepare a suitable ZJ40 CZ truck-mounted drilling rig proposal.

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