Truck installed rig
Technical Specifications – SJ Petro Truck Installed Rig Range
XJ Series Workover Rigs (Self-Propelled, Truck Installed)
| Model | Workover Depth (2-7/8″ DP) | Max Hook Load | Drawworks Power | Chassis Drive | Key Features |
|---|---|---|---|---|---|
| XJ150 | ~2,000m | 300 kN / 30 t | 235 HP | 6×4 | Lightest, single drum, ideal for shallow workover |
| XJ250 | ~3,200m | 675 kN / 68 t | 350 HP | 8×4 | Entry-level dual-purpose |
| XJ350 | 3,200m | 900 kN / 90 t | 350–400 HP | 8×8 or 10×8 | Best-selling export model |
| XJ450 | ~5,500m | 1,125 kN / 113 t | 475 HP | 10×8 | Medium-heavy workover |
| XJ550 | ~6,500m | 1,350 kN / 136 t | 650 HP | 10×8 | Dual-purpose w/ drilling capability |
| XJ650 | ~7,500m | 1,580 kN / 158 t | 750 HP | 12×8 | Heavy workover in deep wells |
| XJ750 | ~8,500m | 1,800 kN / 180 t | 2 × 540 HP | 14×8 | Twin-engine, ultra-deep workover |
| XJ850 | ~9,500m | 2,000 kN / 200 t | 2 × 600 HP | 14×10 | Flagship ultra-deep workover |
| XJ1200 | ~10,500m | 2,250 kN / 225 t | 2 × 630 HP | 14×10 | Maximum depth, heavy-duty |
ZJ Series Truck Mounted Drilling Rigs (Self-Propelled)
| Model | Drilling Depth (4-1/2″ DP) | Max Hook Load | Engine Power | Chassis Drive | Application |
|---|---|---|---|---|---|
| ZJ15 | 1,500m | 1,125 kN / 112 t | 460 HP | 10×8 | Shallow oil & gas, water wells, CBM |
| ZJ20 | 2,000m | 1,350 kN / 135 t | 480 HP | 10×8 | Development drilling, tight gas |
| ZJ30 | 3,000m | 1,700 kN / 170 t | 650 HP | 12×8 | Medium-depth drilling |
| ZJ40 | 4,000m | 2,250 kN / 225 t | 2 × 600 HP | 14×10 | Deep HPHT drilling, heavy workover |
| ZJ50 | 5,000m | 3,150 kN / 315 t | 1,340 HP | Skid-mounted only | Deep drilling (not truck installed) |
Product Types – Choose Your Truck Installed Rig Configuration
We manufacture the full XJ and ZJ series of truck installed rigs. Choose the model that matches your depth requirements and operating environment.
1. XJ150 – Light Workover Rig (Entry Level)
Best for: Shallow wells, water well workover, light servicing, operators with small fleets.
Why buy: Lowest entry cost into truck installed rig ownership. 6×4 chassis, single drum drawworks, easy to maintain.
2. XJ350 – The International Workhorse
Best for: Most onshore workover operations – Oklahoma, Texas, Kansas standard.
Why buy: Hundreds operating in the United States. Available with 25m, 29m, or 31m mast. Choose Caterpillar or Detroit engine. 8×8 or 10×8 full-drive chassis. Complete configuration including lifting system, rotation system, and chassis driving system. Can achieve heavy repairs when provided with substructure and related parts.
3. XJ550–XJ650 – Heavy Workover & Light Drilling
Best for: Dual-purpose operations – workover in 6,000m+ wells plus shallow drilling.
Why buy: 10×8 or 12×8 chassis. Sufficient power for heavy pulling jobs. Optional substructure for drilling.
4. XJ750–XJ1200 – Ultra-Deep Workover (8,000–10,000m)
Best for: HPHT deep gas wells exceeding 8,000m, major workover campaigns, heavy fishing jobs.
Why buy: Twin-engine configuration (2 × 540–630 HP). 14×8 or 14×10 chassis for maximum stability and traction. XJ1200 reaches 10,000m workover depth.
5. ZJ15–ZJ40 – Truck Mounted Drilling Rigs
Best for: Dedicated drilling operations from 1,500m to 4,000m depth. Cluster well development.
Why buy: Full drilling capability on a self-propelled chassis. ZJ40 features dual Caterpillar C18 engines, Allison M6620AR transmissions, 24m mast, and 14×10 carrier. Designed for both oil drilling and heavy workover.
6. Arctic Truck Installed Rig
Best for: Siberia, Northern Canada, Alaska – any location where standard rigs fail to start.
Why buy: SJ Petro delivered three ZJ40 cold-weather rigs to Russia’s Orenburg Drilling Company. Includes pre-heating system, low-temperature hydraulics, engine block heaters, battery warmers, insulated cabs. Designed for -45°C operation.
7. Custom & Specialized Rigs
Best for: Unusual requirements – desert cooling, high altitude, specialized well service.
Why buy: We build to your specifications. Discuss your unique operating environment with our engineering team.
Applications – Where Truck Installed Rigs Excel
Truck installed rigs are not designed to replace massive land drilling spreads on large shale pads. But for a wide range of operations, they are the most efficient and cost-effective solution.
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Well workover & recompletion – pulling rods, tubing, and pumps; fishing; scale removal; zone isolation. XJ350 and XJ550 models are ideal for these operations.
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Shallow to medium drilling – oil, gas, coalbed methane, water wells, and geothermal wells up to 3,000–4,000m. ZJ30 and ZJ40 handle full drilling programs.
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Cluster well development – move between closely spaced wellheads in hours, not days. Self-propelled chassis eliminates crane and lowboy logistics.
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Remote exploration – access locations with poor roads or no crane support. 8×8 or 10×8 chassis provides traction in mud, snow, and sand.
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Heavy workover in deep wells – XJ850 and XJ1200 handle 8,000–10,000m depths in HPHT gas fields.
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Arctic drilling campaigns – winterized rigs for Siberia, Northern Canada, Alaska.
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Desert development – sand-sealed components, oversized cooling, reinforced chassis for Middle Eastern operations.
Why Choose SJ Petro for Your Truck Installed Rig?
Because you need more than a machine – you need a partner who will support your rig for its entire life, from factory delivery to its tenth year in the field.
| What Other Suppliers Offer | What SJ Petro Delivers |
|---|---|
| "Designed to API” (no certification) | Full API 4F, 7K, 8C monogram – documented and audited |
| Unknown engine brands | Caterpillar or Detroit engines – field-proven, parts globally available |
| No overseas track record | 40+ years experience, rigs in USA, Russia, Middle East, Asia |
| Limited after-sales support | On-site commissioning, training, 24/7 parts shipping, remote diagnostics |
| Rig may not comply with local regulations | We work with your import authorities – certificates, inspections, documentation |
| One-size-fits-all configurations | Multiple chassis options (8×4 to 14×10), mast heights (25–31m), engine choices |
More reasons to trust SJ Petro:
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Sinopec Group heritage – over 40 years of truck mounted rig manufacturing, backed by one of the world’s largest energy companies
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Global export track record – truck installed rigs delivered to the United States, Russia, Kazakhstan, UAE, Saudi Arabia, Indonesia, and across Africa
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API 4F, 7K, 8C certified – full certification, not "designed to” claims
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In-house manufacturing – we fabricate masts, assemble drawworks, and integrate controls – no outsourced quality surprises
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Integrated engineering support – on-site commissioning, operator training, and maintenance training included with every rig
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Spare parts availability – we stock wear parts for all models, with 24‑hour emergency shipping available
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Flexible commercial terms – new rigs, refurbished trade-ins, lease options, and milestone payment plans available
Frequently Asked Questions (FAQ) – Truck Installed Rig
Q1: What is the difference between a truck installed rig and a skid-mounted rig?
A: Truck installed rig – All equipment (mast, drawworks, pumps, controls) is permanently mounted on a self-propelled truck chassis. The rig drives itself to location, raises its own mast, and rigs up without a crane. Best for: frequent moves, remote locations, cluster wells, operators without dedicated transport fleets.
Skid-mounted rig – Equipment is mounted on steel skids that require a crane for placement and a tractor for transport. Best for: permanent installations, offshore platforms, or locations where the rig stays on one pad for months.
Q2: What is the difference between XJ series and ZJ series truck installed rigs?
A: XJ series – Primarily workover rigs, though some models can drill shallow wells (1,500–2,500m) with optional substructure. Designed for pulling tubing, rods, pumps, fishing, and remedial work. Lighter mast, faster rig-up, lower chassis weight.
ZJ series – Dedicated drilling rigs, capable of full-depth drilling (3,000–5,000m). Heavier mast, larger drawworks, more powerful chassis. Some ZJ rigs can also perform heavy workover operations.
Q3: What depths can your truck installed rigs reach?
A: Our range covers the full spectrum:
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XJ150 – Workover ~2,000m, drilling shallow wells
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XJ350 – 3,200m workover depth with 2-7/8″ DP, 4,000m servicing depth
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XJ550–XJ650 – 6,500–7,500m workover depth
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XJ850–XJ1200 – 8,500–10,500m workover depth (ultra-deep)
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ZJ15–ZJ40 – Drilling 1,500m to 4,000m with 4-1/2″ DP
Q4: Can your truck installed rigs be used for both drilling and workover?
A: Yes. The XJ350, for example, is a true dual-purpose rig. It performs workover operations as its primary function, but when provided with a substructure and related parts, it can also drill shallow wells. The ZJ series is primarily for drilling, but can handle heavy workover jobs.
Q5: What engines and transmissions do you use?
A: Standard engines are Caterpillar or Detroit Diesel, paired with Allison oilfield-series transmissions. XJ350 options include Caterpillar C9 (260 kW / 350 HP) or Detroit S60 (298 kW / 400 HP) with Allison 4700 OFS or M5610s. ZJ40 uses dual Caterpillar C18 engines (630 HP each) with dual Allison M6620AR transmissions.
Q6: How fast can the rig travel on roads?
A: Maximum travel speed is 45 km/h (28 mph) for all XJ and ZJ series truck installed rigs in transport configuration. The chassis is designed for regional moves between well pads, not highway racing. This speed is sufficient for most oilfield operations and eliminates the need for lowboy trailers.
Q7: How long does it take to rig up from arrival to working?
A: With a trained crew of 4–5 people, typical rig-up time is 4–6 hours for a ZJ40-class rig. Smaller XJ-series rigs can rig up in 3–4 hours. This includes driving onto the pad, leveling with hydraulic jacks, raising the mast, connecting fluid lines, and pressure testing.
Q8: Can your truck installed rigs operate in extreme cold?
A: Yes. SJ Petro delivered three ZJ40 cold-weather truck installed rigs to Russia’s Orenburg Drilling Company, specifically designed for arctic conditions. Features include pre-heating and warming systems, low-temperature hydraulic fluids (pour point below -55°C), engine block heaters, battery warmers, and insulated control cabs. Operating temperature range is -45°C to +50°C.
Q9: Do your truck installed rigs have API certification?
A: Yes. SJ Petro truck installed rigs are designed, manufactured, and tested to API Spec 4F (mast and substructure), API Spec 7K (drawworks and drilling equipment), and API Spec 8C (hoisting equipment). API monogram is available upon request for qualified applications.
Q10: Do you have truck installed rigs operating in the United States?
A: Yes. The XJ350 has been widely adopted in the United States, with hundreds of units operating across Oklahoma, Texas, and Kansas – many flying American flag-colored derricks as a signature of their presence. We understand US road legal requirements, OSHA standards, and API certification needs.
Q11: What is the warranty on a truck installed rig?
A: 12 months after commissioning or 18 months after shipment – whichever occurs first. Coverage includes manufacturing defects on all components (chassis modifications, engine/transmission installation, drawworks, mast, hydraulics). Wear parts (brake bands, seals, filters) are not covered but are available as spares. Extended warranty options available.
Q12: Do you provide operator and maintenance training?
A: Yes. For every new truck installed rig purchase, we include one week of on-site training during commissioning for up to five crew members. The training covers rig operation, maintenance procedures, safety protocols, and troubleshooting. Additional training (factory courses in Jingzhou, extended field training) is available at extra cost.
Q13: Can I buy a refurbished truck installed rig to save money?
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. Typical price is 40–60% of new. Contact our sales team for current inventory.
