Series Skid-mounted Coiled Tubing Units

Technical Specifications

Parameter	SLG50	SLG180	SLG270	SLG360	SLG450	SLG620
Max Pulling Force	50 kN (11,200 lbs)	180 kN (40,000 lbs)	270 kN (60,000 lbs)	360 kN (80,000 lbs)	450 kN (100,000 lbs)	620 kN (139,000 lbs)
Max Snubbing Force	25 kN (5,600 lbs)	90 kN (20,000 lbs)	135 kN (30,000 lbs)	180 kN (40,000 lbs)	225 kN (50,000 lbs)	310 kN (70,000 lbs)
Applicable Tubing O.D.	3/8″ – 4½″	1″ – 2-3/8″	1″ – 2-3/8″	1″ – 2-3/8″	2″ – 2-7/8″	2″ – 4½″
Reel Capacity	Customized per customer requirements
Mounting Type	Skid-mounted (modular "skid-in-skid” design)
Configuration	Individual skids: injector / reel / power pack / control cabin / BOP
Drive System	Hydraulic (diesel or electric prime mover options)
Control System	Hydraulic control with optional digital data acquisition and "one-key” automation
Operating Temperature	−45°C to +55°C
Offshore Options	DNV 2.7-3 lifting certification, ATEX Zone II explosion-proof
Certifications	API Q1, ISO 9001, HSE

Applications – Where Skid-Mounted CTUs Excel

Skid-mounted coiled tubing units are the preferred choice for operations where road access is limited or where permanent installation is required. Here's where they deliver the best return:

Application	Description
Offshore Platforms	Space-constrained environments requiring crane-in/crane-out installation
Remote Onshore Locations	Areas without road access—fly-in, crane-in, operate
Permanent Installations	Fixed well sites where equipment stays on location
FPSO / FLNG Vessels	Marine applications requiring compact, liftable modules
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 controlled milling
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
Standard Skid-Mounted	Onshore permanent installations, remote locations	Individual skids for each component; crane-in/crane-out simplicity
Offshore Skid-Mounted	Offshore platforms, FPSO vessels	DNV 2.7-3 certified; compact footprint; corrosion-resistant
Explosion-Proof Skid-Mounted	Hazardous area operations (Zone II)	ATEX certified; explosion-proof components
Combination Configurations	Operations needing mix of mobility and skid-mounted components	Truck or trailer for some modules, skids for others

OEM Customization Solutions

The SLG Series skid-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, skid-mounted, trailer-mounted, and combination configurations, with maximum pull force ranging from 50 kN to 620 kN.

What we customize:

• Pulling capacity – From 50 kN to 620 kN, matched to your well conditions

• Tubing diameter and reel capacity – Sized precisely to your target depth and tubing specifications

• Skid configuration – Number of skids, component arrangement, lift points

• Offshore certification – DNV 2.7-3 lifting certification, ATEX Zone II explosion-proof

• BOP stack – Pressure rating and size per your well control requirements

• Control system upgrades – Data acquisition, remote monitoring, "one-key” automation

• Climate adaptation – Cold-weather packages (−45°C); high-temperature cooling (+55°C)

• Power system – Diesel or electric drive; generator integration

• Fleet branding – Your company colors and logos applied before delivery

• Downhole tool packages – Fishing tools, milling assemblies, logging adapters

• Video monitoring – Explosion-proof cameras for enhanced operator visibility

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. SJ successfully developed the first skid-mounted offshore workover equipment in China.

🔧 Full-Spectrum Engineering Capability – Core Components In-House

SJ has mastered the design and manufacturing of injector heads, tubing reels, control systems, and other key components through international technical cooperation and independent innovation. Core components are over 90% domestically produced, meaning shorter supply chains and faster spare parts availability. We don't just assemble—we engineer.

🌊 Offshore Pioneer – DNV-Certified CTU Developed in China

SJ successfully developed China’s first offshore explosion-proof coiled tubing unit with DNV certification, achieving breakthroughs in six key technologies to meet the requirements of offshore operations. Our skid-mounted units are available with DNV 2.7-3 lifting certification and ATEX Zone II explosion-proof configurations.

🌍 Proven Global Track Record

Our skid-mounted coiled tubing units have been widely used in China's oilfields and exported to South America, Africa, and the Middle East. SLG series units have been deployed in Saudi Arabia’s Udlia block (earning praise from Saudi Aramco), Russia's Surgut region, and China's Fuling, Weiyuan, and Puguang oilfields.

📋 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 skid-mounted CTU and a truck-mounted CTU?

A: A truck-mounted CTU integrates all components onto a vehicle chassis and requires road access to reach the wellsite. A skid-mounted CTU consists of individual modules (injector, reel, power pack, control cabin) each mounted on its own skid. These skids are designed to be lifted by crane and placed on offshore platforms, barges, or remote onshore locations where roads don’t reach. Once in position, the skids operate just like any other CTU.

Q2: What does "skid-in-skid” design mean?

A: "Skid-in-skid” refers to our modular approach where each major component is mounted on its own individual skid. This allows each module to be lifted separately (reducing crane capacity requirements), positioned independently around the wellhead, and maintained or replaced without dismantling the entire system.

Q3: What pulling capacities are available in skid-mounted configuration?

A: The SLG Series skid-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.

Q4: Can skid-mounted CTUs be used offshore?

A: Absolutely. Skid-mounted CTUs are the preferred configuration for offshore operations. We offer DNV 2.7-3 lifting certification and ATEX Zone II explosion-proof options. SJ successfully developed China's first offshore explosion-proof coiled tubing unit with DNV certification.

Q5: What tubing sizes do the skid-mounted units handle?

A: The SLG series handles tubing from 3/8″ up to 4-1/2″ depending on the model. Reel capacity is customized per your depth requirements.

Q6: What’s the operating temperature range?

A: Our skid-mounted units operate across a wide temperature range from −45°C to +55°C, making them suitable for polar, temperate, and desert environments.

Q7: Are the core components independently manufactured?

A: Yes. SJ has mastered the design and manufacturing of injector heads, tubing reels, control systems, and other key components. Core components are over 90% domestically produced.

Q8: What's the typical lead time for a skid-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 skid-mounted CTU?

A: Send us your well parameters: target depth, tubing diameter, expected wellhead pressure, operating environment (offshore/onshore, temperature range), and any certification requirements (DNV, ATEX, etc.). We'll respond with a technical proposal and commercial quote within 7–10 business days.

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