pipe integrity

Duoline 20

Internal Fiber Glass Liner Systems for Oilfield Tubulars

The workhorse of the DUOLINE systems, developed in 1971, DUOLINE 20 is the solution for the majority of downhole corrosive applications. It employs a durable filament wound fiberglass-epoxy liner sleeve and has a proven track record in a wide range of demanding environments with temperatures up to 121°C (250°F).

Close block

Benefits & Features:

With a successful track record of almost 50 years service in both onshore and offshore completions, the performance of Duoline has been tested by E & P companies in a wide range of operating conditions. Duoline lowers life cycle costs by offering a more durable, longer lasting corrosion protection than IPC coatings.

  • Does not require specialized pipe, it can be applied to standard J55 & L80 EUE new or used tubing.
  • Extends tubing life in difficult conditions by being abrasion resistant to wireline and coiled tubing procedures.
  • Prolongs tubing life by eliminating dependency of coating remaining ‘bonded’ to pipe which is key in CO2 and H2S.
  • Provides ease of repair by removing the requirement to burn and recoat tubing with rig damaged threads and couplings.


  • CO2 Injection
  • Produced Water Injection
  • Sour Gas Production
  • Gas Lifted Oil Production
  • ESP Source Wells

To obtain a copy of Duoline's Best Practices Manual, contact 780.469.1356 or info@riceeng.com.