XJ900 Three-section-mast Workover Rig

Technical Specifications

Applications

The XJ900 Three-Section Mast Workover Rig is deployed across a broad spectrum of oilfield operations where extended working height and medium-depth capability are required:

• Medium-Deep Workover Operations – Tubing replacement, pump repairs, and production optimization in wells up to 4,000 meters

• Tall BOPE Stack Operations – Wells requiring multiple rams, spools, and well control equipment

• Complex Fishing Operations – Retrieval of downhole tools and equipment requiring overhead clearance

• Milling and Section Milling – Operations requiring extended tool strings

• Coiled Tubing Support – Overhead clearance for coiled tubing injector heads

• Snubbing Operations – Clearance for snubbing stacks and hydraulic jacks

• Well Servicing & Maintenance – Routine and major maintenance for production wells

• Environmentally Sensitive Areas – Electric drive option for zero-emission operations

The XJ900 three-section mast workover rig is the preferred choice for operators who need maximum working height and medium-depth capability in a mobile, self-propelled package.

Product Types

SJ Petro offers the XJ900 Three-Section Mast Workover Rig in multiple configurations:

1. Standard Diesel Drive XJ900 – Conventional diesel engine drive with proven reliability and global serviceability.

2. Electric Drive XJ900 (Grid-Powered) – Lower emissions and reduced operating costs for environmentally sensitive areas.

3. Full-Electric XJ900 (BEV) – Pure battery-electric configuration with 8×8 pure electric heavy-duty chassis and 80 km driving range.

4. Grid + Energy Storage XJ900 – Supercapacitor or battery storage configuration for locations with limited grid capacity.

5. Dual-Drive XJ900 – Flexible hybrid configuration combining diesel and electric power.

6. No-Guyline XJ900 – Eliminates the need for guyline anchors—ideal for congested wellsites and urban-adjacent fields.

7. Automated XJ900 Workover Rig – Equipped with multiple automation devices and integrated control systems for reduced crew requirements and unmanned wellhead operation.

8. Desert XJ900 Workover Rig – Specialized configuration for extreme desert conditions.

9. Low-Temperature XJ900 Workover Rig – Engineered for arctic and sub-arctic operations.

OEM & Customization Solutions

Every wellsite presents unique challenges, and SJ Petro’s engineering team delivers tailored solutions through our comprehensive OEM and customization capabilities:

• Custom Mast Height – Working height can be optimized for your specific BOPE stack and operational requirements.

• Mast Section Configuration – Choose three-section or alternative configurations based on transport and working height requirements.

• Custom Chassis & Mobility – Adapt chassis specifications and drive configurations (8×4 or 8×8) to suit your terrain and transport requirements.

• Power System Selection – Choose from diesel, electric, full-electric (BEV), dual-drive, or grid+storage configurations.

• Automation Package – Optional automation equipment for reduced crew requirements.

• Well Control Integration – Complete BOPE packages integrated with the rig control system.

• Climate-Specific Engineering – Desert, low-temperature, and tropical configurations available.

• No-Guyline Configuration – Eliminates guyline anchors for congested wellsites.

• Turnkey System Integration – From basic workover units to fully integrated packages with complete well control and solids control systems.

Why Choose SJ Petro?

Three-Section Mast Engineering Expertise

SJ Petro has been at the forefront of workover rig design for over four decades. Our three-section mast technology delivers superior working height and reach while maintaining a compact transport profile—a critical advantage for operators facing tall BOPE stacks and complex downhole operations.

Proven Track Record – Complete Product Range

SJ Petro offers a complete line of workover rigs with maximum static loads from 300 kN to 2,250 kN and workover depths up to 9,000 meters. Our product portfolio spans eight major series of vehicle-mounted workover equipment, including automated workover rigs, ultra-deep well workover rigs, green energy workover rigs, desert workover rigs, no-guyline workover rigs, self-tensioning guyline workover rigs, and dual-drum workover rigs.

Industry-Leading Innovation

SJ Petro was the first to introduce the world’s first full-electric drive XJ900 automated workover rig. Our innovations in oil-electric dual-drive, supercapacitor energy storage, and full-electric drive have set new industry standards for energy efficiency and environmental performance.

API-Certified Quality

SJ Petro holds API (American Petroleum Institute) , ISO9001 , and HSE management system certifications. Our mast designs comply with API Spec 4F, and our manufacturing processes meet API Spec Q1, 7K, 8C, and RP500 standards.

Global Deployment

SJ Petro workover rigs have been exported to more than 30 countries and regions worldwide, with customers including Sinopec, CNPC, CNOOC, and international oilfield service companies.

One-Stop Solution Provider

Beyond manufacturing, we offer equipment inspection, testing, and major overhaul services. From initial design to field service and spare parts supply, SJ Petro delivers complete oil and gas exploration and production equipment solutions.

Frequently Asked Questions

Q: What is the advantage of a three-section mast over a two-section mast?

A: A three-section mast provides significantly greater working height than a two-section mast while maintaining a compact transport profile. This provides critical clearance for tall BOPE stacks, complex downhole tools, and operations requiring extended overhead space.

Q: What is the maximum working height of the three-section mast?

A: The three-section mast delivers working heights of 31 meters or more, depending on configuration. Contact our sales team for specific dimensions based on your operational requirements.

Q: What is the maximum hook load of the XJ900?

A: The XJ900 delivers a maximum static hook load of 900 kN (90 metric tons / 202,000 lbs) with a rated hook load of 600 kN.

Q: What is the maximum workover depth?

A: The XJ900 achieves a workover depth of 3,200 meters with 2-7/8″ drill pipe and a service depth of 4,000 meters with 2-7/8″ EUE tubing.

Q: How is the mast raised and telescoped?

A: The mast is raised and telescoped by hydraulic cylinders, eliminating the need for large cranes or complex rigging at the wellsite.

Q: What power options are available?

A: We offer diesel engine drive, electric drive, full-electric (BEV), dual-drive, and grid+energy storage configurations.

Q: Can the XJ900 be configured without guy lines?

A: Yes. We offer a no-guyline configuration that eliminates the need for guyline anchors—ideal for congested wellsites and urban-adjacent fields.

Q: Are your products API certified?

A: Yes. SJ Petro holds API certifications and our mast designs comply with API Spec 4F. Our manufacturing processes meet API Spec Q1, 7K, 8C, and RP500.

Q: Do you offer OEM or customized solutions?

A: Absolutely. We offer comprehensive customization including mast height, chassis configuration, power system, automation packages, and climate-specific engineering.

Q: What is the total vehicle mass?

A: The total vehicle mass is approximately 51,000 kg, varying by configuration.

Q: What is your manufacturing capacity and lead time?

A: We have the largest workover equipment manufacturing base in China with comprehensive production capabilities. Lead times vary by configuration—contact our sales team for specific project timelines.

Q: Do you provide after-sales support and spare parts?

A: Yes. We offer comprehensive after-sales support including spare parts supply, equipment inspection, testing, and major overhaul services.

Tag: Inter-well Moving Device for Cluster Wells