Series Trailer-mounted Coiled Tubing Units
Technical Specifications
| Model | Max Pulling Force | Max Snubbing Force | Applicable Tubing O.D. | Reel Capacity | Configuration |
|---|---|---|---|---|---|
| SLG50 | 50 kN (11,200 lbs) | 25 kN (5,600 lbs) | Custom | Custom | Trailer-mounted |
| SLG180 | 180 kN (40,000 lbs) | 90 kN (20,000 lbs) | 1″ – 2-3/8″ | Custom | Trailer-mounted |
| SLG270 | 270 kN (60,000 lbs) | 135 kN (30,000 lbs) | 1″ – 2-3/8″ | Custom | Trailer-mounted |
| SLG360 | 360 kN (80,000 lbs) | 180 kN (40,000 lbs) | 1″ – 2-3/8″ | Custom | Trailer-mounted |
| SLG450 | 450 kN (100,000 lbs) | 225 kN (50,000 lbs) | 2″ – 2-7/8″ | Custom | Trailer-mounted integrated |
| SLG620 | 620 kN (139,000 lbs) | 310 kN (70,000 lbs) | 2″ – 4-1/2″ | Custom | Trailer-mounted |
Applications – Where Trailer-Mounted CTUs Excel
Trailer-mounted coiled tubing units are the preferred choice for operations requiring maximum tubing capacity and road transportability. Here's where they deliver the best return:
| Application | Description |
|---|---|
| Ultra-Deep Well Workovers | Deep wells requiring maximum tubing length and large-diameter capability |
| Deep Unconventional Oil & Gas Development | Shale gas, tight oil, and other deep unconventional resources |
| Large-Diameter Coiled Tubing Operations | Operations requiring tubing up to 2-7/8″ (73.0 mm) |
| Multi-Well Campaigns | Rapid relocation between wells with minimal rig-up time |
| Well Cleanout & Sand Flushing | Remove sand plugs and debris without killing the well |
| Paraffin & Scale Removal | Clear wax buildup and mineral scale to restore production |
| Acidizing | Precisely place acid across target zones for stimulation |
| Nitrogen Lift & Gas Lift | Unload wells and kickstart production |
| Fishing Operations | Retrieve lost tools or debris from the wellbore |
| Milling & Drilling Operations | Remove plugs, packers, or cement with automated drilling modes |
| Velocity String Installation | Run smaller-diameter tubing to address liquid loading |
| Well Logging | Deploy logging tools in deviated or horizontal wells |
Product Type Configurations
| Configuration | Best For | Key Advantage |
|---|---|---|
| Trailer-Mounted Integrated (SLG450) | Deep/ultra-deep wells requiring rapid deployment | No on-site pipe threading or cable connections; 1-hour wellhead installation |
| Trailer-Mounted Split-Type | Operations needing maximum reel capacity | Reel on trailer, injector/power on separate unit—maximum tubing capacity |
| Trailer-Mounted Modular | Multi-well campaigns with varied road conditions | Modular transport adapting to different road conditions |
| Combination Configurations | Operations needing mix of mobility and capacity | Custom-engineered to your specific logistics |
OEM Customization Solutions
The SLG Series trailer-mounted coiled tubing units are not one-size-fits-all products—they're platforms that we adapt to your specific operational requirements. Available in truck-mounted, trailer-mounted, skid-mounted, and combination configurations.
What we customize:
-
Pulling capacity – From 50 kN to 620 kN, matched to your well conditions
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Tubing diameter and reel capacity – Sized precisely to your target depth and tubing specifications
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Trailer configuration – Integrated or split-type; axle configuration; road transport compliance
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Control system upgrades – Data acquisition, remote monitoring, "one-key” automation
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Climate adaptation – Cold-weather packages; high-temperature cooling
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BOP stack – Pressure rating and size per your well control requirements
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Power system – Diesel or electric drive options
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Fleet branding – Your company colors and logos applied before delivery
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Downhole tool packages – Fishing tools, milling assemblies, logging adapters
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Video monitoring – Explosion-proof cameras for enhanced operator visibility
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Online monitoring systems – Real-time equipment operational data acquisition
Why Choose SJ Petroleum Machinery?
🏭 Sinopec Manufacturing Heritage
We're not a trading company—we’re a manufacturer with roots in Sinopec's engineering ecosystem. Founded in 1941, we’ve been building oilfield equipment for over eight decades. As a China Critical Technological Equipment Nationalization Base and National Hi-tech Enterprise, our quality systems, supply chains, and engineering standards meet the highest benchmarks.
🔧 Full-Spectrum Engineering Capability – Core Components In-House
Through international technical cooperation and independent innovation, SJ has mastered the design and manufacturing of injector heads, tubing reels, hydraulic control systems, and other key components. Major components including the injector head have been developed in a 50 kN–600 kN series, and tubing reels in a 60-inch to 95-inch series. We don't just assemble—we engineer.
🚛 Trailer-Mounted Innovation – 1-Hour Wellhead Installation
Our trailer-mounted integrated SLG450 requires no on-site pipe threading or cable connections and achieves wellhead installation within 1 hour. This represents a significant leap forward in operational efficiency for deep and ultra-deep well interventions.
🌍 Proven Global Track Record
Our trailer-mounted coiled tubing units have been widely used in China’s oilfields and exported to South America, Africa, the Middle East, Russia, Indonesia, and other international markets. After nearly 20 years of continuous development, SJ has created a full range of products suitable for land, offshore, desert, and polar environments.
⚡ Field-Proven Performance – 3× Faster
SLG450 coiled tubing units achieve no-collar, uninterrupted continuous pipe running and retrieval with operating efficiency more than 3 times that of conventional equipment. Cumulative operation mileage has reached 3.8 million meters.
📋 Certified to International Standards
API Q1, ISO 9001, and HSE management system certified. Our manufacturing processes are audited annually.
🔄 One-Stop Service Commitment
Commissioning support, operator training, spare parts logistics, and technical troubleshooting—we stay with you after the sale. Our export team understands the logistics of international shipping and can arrange delivery to your location.
💰 Competitive Pricing, No Quality Compromise
Chinese manufacturing doesn't mean cutting corners. We deliver professional-grade coiled tubing equipment at prices that make sense for your capital budget—full transparency on materials, components, and workmanship.
Frequently Asked Questions (FAQ)
Q1: What’s the difference between a trailer-mounted CTU and a truck-mounted CTU?
A: A truck-mounted CTU integrates all components onto a single vehicle chassis—everything travels together but weight and space are limited. A trailer-mounted CTU separates the load across a towed trailer, allowing for larger reels, greater tubing capacity, and better weight distribution. Trailer-mounted units are ideal for operations requiring maximum tubing length and large-diameter capability.
Q2: What pulling capacities are available in trailer-mounted configuration?
A: The SLG Series trailer-mounted CTUs are available across the full model range—from SLG50 (50 kN / 11,200 lbs) through SLG620 (620 kN / 139,000 lbs) . Choose the capacity that matches your well conditions.
Q3: What does "trailer-mounted integrated” mean?
A: The trailer-mounted integrated configuration (exemplified by the SLG450) means the injector head, tubing reel, control cabin, and power system are pre-configured on the trailer. It requires no on-site pipe threading or cable connections and achieves wellhead installation within 1 hour. Just tow, position, and operate.
Q4: What tubing sizes do the trailer-mounted units handle?
A: The SLG series handles tubing from 1″ up to 4-1/2″ depending on the model. The SLG450/73 specifically handles 50.8–73.0 mm (2″–2-7/8″) . Reel capacity is customized per your depth requirements.
Q5: What's the operating temperature range?
A: SJ’s coiled tubing equipment operates across a wide temperature range suitable for land, offshore, desert, and polar environments. Cold-weather and high-temperature packages are available.
Q6: Are the core components independently manufactured?
A: Yes. SJ has mastered the design and manufacturing of injector heads, tubing reels, hydraulic control systems, and other key components through international technical cooperation and independent innovation. Major components including the injector head have been developed in a 50 kN–600 kN series.
Q7: Has trailer-mounted CTU technology been proven in the field?
A: Yes. After nearly 20 years of continuous development, SJ's trailer-mounted coiled tubing units have been widely used in China’s oilfields and exported to South America, Africa, the Middle East, Russia, Indonesia, and other international markets. The SLG450 achieves no-collar, uninterrupted continuous pipe running and retrieval with operating efficiency more than 3 times that of conventional equipment.
Q8: What's the typical lead time for a trailer-mounted CTU?
A: Standard lead time is 90 to 150 days from order confirmation to shipment, depending on configuration and customization level. Contact our sales team for current availability.
Q9: Do you provide training and after-sales support?
A: Absolutely. Each CTU sale includes commissioning assistance and operator/maintainer training—either at your facility or ours. Spare parts are stocked for global shipment, and our technicians are available for field support.
Q10: How do I get a quote for a trailer-mounted CTU?
A: Send us your well parameters: target depth, tubing diameter, expected wellhead pressure, operating environment, and preferred configuration. We'll respond with a technical proposal and commercial quote within 7–10 business days.
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