Reflex® HP Swellable Isolation Packer

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High-pressure seal solution for wellbore isolation in challenging environments

Page last modified
July 31 2025

The Reflex® HP Swellable Isolation Packer is a high-pressure sealing solution designed for challenging downhole environments. It features swelling elastomers directly bonded to OCTG tubing, casing, or mandrels, customized for specific applications. This technology is commonly used for open-hole isolation and annular isolation in intermediate and surface casing.

The Reflex® HP can operate in a wide range of well conditions, including high and ultra-low temperature environments, large wash-outs, and scenarios requiring fast or ultra-slow swelling. It is capable of handling high chloride concentrations, exotic brines, high water cut, and deep water sea-bed thermal applications.

Key features of the Reflex® HP include:
- Pressure capability up to 15,000 psi
- Available in oil, water, and combination swelling compounds
- Element lengths up to 10 meters (35 feet)
- Compatibility with standard API or custom pipe sizes
- Optional high-grip end rings for enhanced sealing

The technology has demonstrated a 100% success rate in over 40,000 installations worldwide, including challenging high-pressure and fracturing applications. Reflex® HP packers are manufactured in-house, allowing for short lead times and customization to suit specific well requirements. The swellable compounds used in Reflex® HP have been extensively tested for swell speed, maximum differential pressure capability, and final swell volumes, with data incorporated into Reactive Downhole Tools' proprietary "SWELLOMETER" simulation software for optimal design and performance prediction.

Pros & Limitations
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High-pressure seal solution, capable of up to 15,000 psi pressure
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100% success rate in 40,000 installations worldwide
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Suitable for a wide range of well conditions including high temp to ultra low temp environments
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Can cover large wash-out areas
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Available in fast swell, ultra-slow swell options
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Effective in high chlorides and exotic brines environments
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Can be used in high water cut conditions
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Suitable for deep water sea-bed thermal applications
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Customizable design for specific environments
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Element lengths of up to 10-m (35-ft) can be manufactured
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Short lead times due to in-house manufacturing
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Available in oil, water and combination compounds
Specification
Title Description
Theme/Discipline
Well Operations
Pressure capability
Up to 15,000 psi
Element types
Oil swelling, Water swelling
Max element length
10-m (35-ft)
End ring options
Standard, Hi-grip
Compatibility
Exotic brines, High salinity brines
Chemical resistance
Acid, H2S, CO2, Common oilfield chemicals
Applications
Open-hole isolation, Intermediate casing annular isolation, Surface casing annular isolation
Temperature range
High temp to ultra low temp environments
Success rate
100% in 40,000 installations worldwide
Technology Readiness Level

The Technology Readiness Level (TRL) indicates the maturity level of novel technologies. Learn more about the TRL scale used by us.

[9/9]

Development Technology demonstration Mature / Proven
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Reactive Downhole Tools is a well-established provider of high-performance swellable isolation technology for the global oil and gas industry. The company has evolved to offer bespoke open and cased hole completion systems, with a focus on providing quick turnaround solutions across the entire wellbore. Reactive prides itself on designing, delivering, and implementing customized solutions rather than relying on catalog selections. Founded in April 2012, the company has expanded its operations globally, with offices and manufacturing facilities in the UK, USA, and UAE. Reactive's product range includes the Reflex® and CHIMERA™ lines, which cater to various wellbore needs such as completions, workover, clean-up, construction, and intervention. With a strong emphasis on research and development, Reactive Downhole Tools aims to provide innovative and tailored solutions for the most challenging downhole environments.

Country of Headquarters
United Kingdom
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