Workover Equipment
Technical Specifications – Complete XJ Series Overview
XJ Series Workover Rigs – Complete Specifications
| Parameter | XJ150 | XJ250 | XJ350 | XJ450 | XJ550 | XJ650 | XJ1000 | XJ1200 |
|---|---|---|---|---|---|---|---|---|
| Workover Depth (2-7/8″ DP) | ~2,000m | 3,200m | 3,200m | 5,500m | 7,000m | 8,000m | 9,000m | 10,000+ ft |
| Max Hook Load (kN) | 300 | 675 | 900 | 1,125 | 1,350 | 1,580 | 1,800 | 2,250 |
| Max Hook Load (lbs) | 67,440 | 151,740 | 202,330 | 253,000 | 303,000 | 355,200 | 405,000 | 505,800 |
| Installed Power (HP) | 235 | 350 | 360 | 475 | 540 | 650 | 1,000 | 1,000+ |
| Engine | Cat | Cat C9 | Cat | Cat | Cat | Cat C18 | Cat | Dual Cat |
| Transmission | Allison | Allison 4700 OFS | Allison | Allison | Allison | Allison S6610RH | Allison | Dual Allison |
| Carrier Drive | 6×4 | 10×8 | 8×8/10×8 | 10×8 | 10×8 | 12×8 | 14×8 | 14×10 |
| Mast Height (m) | ~18 | 31 | 31 | ~32 | 35 | 35 | ~38 | ~39 |
| Hook Load System | 3×4 | 3×4 | 3×4 | 4×5 | 4×5 | 4×5 | 5×6 | 5×6 |
| Rotary Table | Optional | Optional | Optional | Standard | Standard | Standard | Standard | Standard |
XJ250 – Detailed Technical Specifications
The XJ250 is widely regarded as the best economic workover rig for its reliable performance, innovative design, and cost‑effectiveness.
| Parameter | Specification |
|---|---|
| Workover Depth (2-7/8″ DP) | 3,200 m (10,500 ft) |
| Servicing Depth (2-7/8″ EUE Tubing) | 3,200 m (10,500 ft) |
| Rated Hook Load | 400 kN (90,000 lbf) |
| Max Hook Load | 735 kN (165,000 lbf) |
| Engine | Caterpillar C9, 260 kW (350 HP) at 2,100 rpm |
| Transmission | Allison 4700 OFS |
| Carrier Drive | Self‑propelled 10×8 |
| Derrick Height | 31 m (102 ft) |
| Racking Board Capacity | 3,200 m of 2-7/8″ EUE tubing |
| Max Travel Speed | 60 km/h (field limited to 45 km/h) |
| Overall Dimensions (L×W×H) | 18.5 × 2.9 × 4.2 m |
| Weight | 50,000 kg (110,230 lb) |
XJ650 – Detailed Technical Specifications
The XJ650 is renowned for its powerful capability, stable performance and great mobility, with satisfied users in South America, Western Africa and the Middle East.
| Parameter | Specification |
|---|---|
| Workover Depth (2-7/8″ DP) | 8,000 m (26,200 ft) |
| Drilling Depth (3-1/2″ DP) | 2,000 m (6,560 ft) |
| Max Static Hook Load | 1,580 kN (355,200 lbf) |
| Engine | Caterpillar C18, 485–492 kW |
| Transmission | Allison S6610RH |
| Carrier Drive | 12×8 self‑propelled |
| Mast Height | 35 m (115 ft) |
| Rotary Table | ZP205 equipped |
| Max Travel Speed | 45 km/h (28 mph) |
XJ550 – Detailed Technical Specifications
| Parameter | Specification |
|---|---|
| Workover Depth (2-7/8″ DP) | 7,000 m (23,000 ft) |
| Max Hook Load | 1,350 kN (303,000 lbf) |
| Engine | CAT diesel engine (model varies) |
| Transmission | Allison transmission case |
| Carrier Drive | 10×8 |
| Derrick Height | 35 m |
| Derrick Wind Resistance | Level 12 |
| Drawworks | Double‑drum structure |
| Brake System | Dual redundant hydraulic disc brake |
Applications – Where Our Workover Equipment Excels
SJ Petro workover equipment is deployed across all types of well intervention and remedial operations worldwide:
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Workover and Recompletion – pulling rods, tubing, and pumps; fishing; scale removal; zone isolation. XJ250 through XJ450 models are ideal for these operations.
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Heavy Workover in Deep Wells – XJ550, XJ650, XJ1000 and XJ1200 handle depths up to 9,000m with maximum static loads up to 2,250 kN.
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Shallow to Medium Drilling – XJ450 and above can perform drilling operations when equipped with rotary table systems, saving the cost of a separate drilling spread.
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Fishing Operations – retrieve broken drill pipe, dropped tubing, bit cones, and other downhole debris.
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Milling and Section Milling – cut damaged casing sections and dress fish tops.
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Zone Isolation and Plug‑Back – set bridge plugs and cement retainers for abandonment or remedial cementing.
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Remote Exploration – self‑propelled carriers access locations with poor roads and no crane support.
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Arctic Campaigns – available Arctic package with heated cabins, low‑temperature hydraulics, proven in Russia’s Orenburg field.
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Desert Development – sand‑sealed components and reinforced chassis for Middle Eastern operations.
Product Types – Workover Equipment Configurations
We offer workover equipment at three levels: individual components, complete rigs, and turnkey intervention spreads.
1. XJ Series Self‑Propelled Workover Rigs (Complete)
The full XJ series – from XJ150 light workover to XJ1200 ultra‑deep workover – each including:
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Self‑propelled carrier (6×4 up to 14×10 drive) with full road lights and brakes
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Caterpillar engine and Allison transmission
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API 4F telescoping mast with hydraulic raising
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Drawworks with multiple brake systems
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Optional rotary table and substructure for drilling capability
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Full control system with local and remote options
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LED lighting for night operations
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Spare parts kit and documentation package
2. Light Workover Solutions (XJ150 – XJ350)
Best for shallow wells, light servicing, water wells, and small operators. The XJ350 is widely used in US oilfields, with hundreds of units operating across Oklahoma, Texas, and Kansas.
3. Medium to Heavy Workover Solutions (XJ450 – XJ650)
Best for most onshore workover operations – conventional oil, mature fields, and 2‑in‑1 workover + drilling capabilities. The XJ650 is the best‑selling heavy duty model, with a strong reputation in South America, Western Africa and the Middle East.
4. Ultra‑Deep Workover Solutions (XJ1000 – XJ1200)
Best for deep HPHT wells, major fishing campaigns, and offshore platform intervention. XJ1200 reaches 10,000+ ft workover depth with 2,250 kN static hook load.
5. Specialized Workover Equipment Packages (Custom)
We also supply:
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Arctic package (-45°C) – heated fluid ends, low‑temperature hydraulics, engine block heaters, insulated control cabs
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Desert package (50°C+) – oversized cooling, sand‑sealed enclosures, dust filtration
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Rotary drilling packages – substructure, rotary table, drilling line, and accessories for 2‑in‑1 rig conversions
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Downhole fishing and milling tools – overshots, spears, mills, jars, safety joints
6. Refurbished and Used Workover Rigs
We occasionally have trade‑ins from customers upgrading their fleets. Refurbished rigs are disassembled, inspected, fitted with new wear parts, repainted, load tested, and come with a 6‑month warranty. Price is typically 40–60% of new.
Why Choose SJ Petro for Workover Equipment?
Because workover equipment is a long‑term investment – and you need a manufacturer who stands behind every weld, every test, and every component.
| Your Challenge | SJ Petro’s Answer |
|---|---|
| "I need API certification for an international tender.” | Full API 4F, 7K, 8C certification. API monogram available. Complete documentation packages including MTRs, hydrostatic certificates, NDT reports. |
| "I need a rig that can move between wells quickly without a crane.” | Self‑propelled carriers – drive to location, raise mast hydraulically, no separate transport vehicles required. |
| "I want a rig that can do both workover and drilling.” | XJ550, XJ650 and above are true 2‑in‑1 rigs. Workover at 8,000m and drilling at 2,000m with rotary table equipped. |
| "I need reliable power components with global parts availability.” | Caterpillar engines + Allison transmissions – industry standard, parts available worldwide. |
| "I operate in extreme environments – arctic or desert.” | Arctic and desert packages available. Proven track record in Russia’s -45°C Orenburg field and Middle Eastern 50°C+ operations. |
| "I want a single manufacturer for both the rig and the tools.” | We manufacture workover rigs and supply a full range of downhole workover tools – fishing tools, milling tools, bridge plugs – all from one source. |
More reasons to trust SJ Petro:
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Over 40 years of workover equipment manufacturing – founded in 1941, not a new entrant
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Four major product categories, 12 families, 200+ product models
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Global track record – workover equipment operating in South America, Western Africa, Middle East, United States, Indonesia, Russia
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In‑house manufacturing – chassis integration, mast fabrication, drawworks assembly – all under one roof
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24‑hour spare parts shipping – emergency parts from main warehouse
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Lease and financing options – milestone payments, operating leases, and direct financing available for qualified buyers
Frequently Asked Questions (FAQ) – Workover Equipment
Q1: What is the difference between a workover rig and a drilling rig?
A: A workover rig is designed for well servicing operations – pulling tubing and rods, fishing, pump replacement, zone isolation – on existing producing wells. Workover rigs are generally lighter, more mobile, and have a smaller footprint. A drilling rig is designed to drill new wells from surface. The XJ series bridges this gap: XJ550, XJ650 and above are true 2‑in‑1 rigs capable of both workover and shallow to medium drilling when equipped with a rotary table.
Q2: What workover depths can your XJ series rigs reach?
A: Our XJ series covers the full depth spectrum:
| Model | Workover Depth (2-7/8″ DP) |
|---|---|
| XJ250 | 3,200 m (10,500 ft) |
| XJ350 | 3,200 m |
| XJ450 | 5,500 m |
| XJ550 | 7,000 m |
| XJ650 | 8,000 m |
| XJ1000 | 9,000 m |
| XJ1200 | 10,000+ ft |
Maximum hook load ranges from 300 kN to 2,250 kN, with installed power from 235 HP to 1,300 HP.
Q3: Are your workover rigs API certified?
A: Yes. All XJ series workover rigs are designed and manufactured in accordance with API Spec Q1, 4F, 7K, 8C and relevant standards. API monogram is available upon request. We can provide third‑party witness testing for international tenders.
Q4: What is the lead time for an XJ series workover rig?
A: Standard lead times from order confirmation:
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XJ250–XJ350 (standard configuration): 4–5 months
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XJ450–XJ550 (standard configuration): 5–6 months
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XJ650–XJ1200 (standard configuration): 6–8 months
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Custom builds (arctic, desert, special requirements): 8–10 months
Expedited delivery may be available – contact our sales team.
Q5: Can I get a refurbished workover rig to save costs?
A: Yes. We occasionally have trade‑ins from customers upgrading their fleets. Refurbished rigs are completely disassembled, inspected, fitted with new wear parts, repainted, load tested, and come with a 6‑month warranty. Price is typically 40–60% of new. Contact our sales team for current inventory.
Q6: What is the warranty on a workover rig?
A: 12 months after commissioning or 18 months after shipment – whichever occurs first. The warranty covers manufacturing defects on all components (carrier, engine, transmission, drawworks, mast, hydraulics). Wear parts are not covered but are available as spares. Extended warranty (up to 5 years) is available for an additional fee.
Q7: Do you provide operator training for workover rigs?
A: Yes. For every rig purchase, we include 1–2 weeks of on‑site training during commissioning, covering rig operation, maintenance, safety protocols, and emergency procedures. Digital manuals, video tutorials, and remote support are also provided. Additional training (factory courses in Jingzhou, extended field training) is available at extra cost.
Q8: Do you offer financing or leasing for workover equipment?
A: Yes. For qualified buyers, we offer direct financing (through partner banks, terms up to 5 years), operating leases (low monthly payments), and milestone payment plans (30/40/30). Contact our sales team for a lease proposal.
Q9: What is the difference between an XJ250 and an XJ650 workover rig?
A: The XJ250 is designed for shallow to medium workover operations (up to 3,200m depth) and is our best‑selling economic model. The XJ650 is a heavy‑duty workover rig rated for 8,000m workover depth, equipped with a 12×8 self‑propelled carrier and Caterpillar C18 engine with Allison S6610RH transmission. The XJ650 can also perform drilling operations to 2,000m when equipped with a rotary table.
Q10: Do you also supply downhole workover tools (fishing tools, mills, bridge plugs)?
A: Yes. Through our subsidiary SJS Ltd., we supply a full range of downhole workover tools including overshots, fishing spears, taper mills, junk mills, section mills, bridge plugs, cement retainers, and retrievable packers. All tools are API 11D1 certified for highest quality assurance. This integrated approach simplifies procurement and ensures compatibility between surface and downhole equipment.
Q11: How do your workover equipment prices compare to other manufacturers?
A: For equivalent specifications (same hook load, same depth capacity, same API certification), SJ Petro workover rigs are typically 15–25% lower than Western brands, and highly competitive with other Chinese manufacturers. The difference reflects direct factory pricing and 40+ years of manufacturing efficiency. We are happy to provide a side‑by‑side comparison quote.
Q12: Can I see a workover rig in operation before purchasing?
A: Yes. We welcome customer visits to our factory in Jingzhou, China, where you can inspect rigs under construction and witness load testing. For international customers, we can arrange visits to active field sites in the Middle East, South America, Western Africa, or Southeast Asia where XJ series rigs are currently operating.
Q13: Do you ship workover rigs internationally? What about compliance with local regulations?
A: Yes. We have shipped workover rigs to the United States, Russia, Middle East, South America, Western Africa, Indonesia, and other countries. We understand US road legal requirements, OSHA standards, API certification needs, Russian GOST/EAC requirements, and other regional compliance frameworks. We provide all documentation required for import.
