Glass Reinforced Epoxy Lining

LINING SYSTEM TO EXTEND THE LIFE OF YOUR TUBULAR AND

SAVING YOUR OPEX

EFK has the license agreement from Maxtube to act as the  independent, reseller and installer for the marketing, sales, installation and servicing of DUOLINE® LINING to customers located in the territory of Republic of Indonesia.

EFK providing Duoline 20 GRE Lining and Duoline 10 PE Lining. With the Local Content Duoline 20 GRE Lining 15.56% and Local Content Duoline 10 PE Lining 18.62% we are offering the solution to extend the life of your tubular and create saving to your OPEX or TCO (Total Cost Of Ownership)

When corrosion starts in downhole tubing, the string soon fails. The result is downtime and increased operation costs for workovers and tubing pulls.

The DUOLINE® system, developed by Duoline Technologies in 1965, has proven to be the most successful solution for the prevention of downhole tubular corrosion. installed more than 110million feet and 55000wells around the world. The DUOLINE® system ensures the isolation of corrosive oilfield fluids and gases from the steel, thereby preventing corrosion of steel tubing, rod and line pipe. DUOLINE® system follow API 15CLT Recommended Practice

DUOLINE® provides the following SAVINGS:

• Rig Time & Cost 

• Manpower time & cost

• Costly chemical treatments

• Workover time & cost

• As an alternative of expensive chrome or alloy materials

• Reusable and applicable for new, stocked or used Tubing  

DUOLINE 20 is a GRE (glass reinforced epoxy) composite liner engineered with a special resin system developed exclusively for Duoline Technologies in 1971. The DUOLINE 20 liner is manufactured using a filament winding and high temperature cure process (Holiday Free). It is widely accepted that GRE lining is a more robust alternative to internal plastic coating. DUOLINE® 20 is a very effective corrosion barrier with a long history of tubular protection in a variety of offshore and land-based applications.

DUOLINE 20 is then inserted inside carbon steel tubing, combining the high strength of steel with the inert properties of fibreglass to provide effective, long lasting corrosion protection. DUOLINE 20 is A cost effective alternative to high-priced alloyed steel tubular goods utilized in seawater injection and salt water disposal from offshore production operations.

Duoline 20 is highly resistant to H2S. The Duoline 20 liner can protect low alloy CS tubing up to: 

• 144 deg C in absence of H2S

• 127 deg C in presence of 10% H2S and 10% CO2 

• 110 deg C in presence of 17% H2S and 10% CO2  

Performance Capabilities

Temperature: Up to 250 F / 121 C

Working Pressure: Full working pressure of the lined steel pipe

• Duoline has a better flow profile than steel pipe.

• The very smooth internal bore of Duoline causes much less overall friction loss than that of new bare steel;

• “Hazen & Williams” C-Factor: C=150