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The workhorse of the DUOLINE® lining systems. DUOLINE® 20, developed by Duoline Technologies in 1971, is targeted for more demanding corrosive downhole environments. The DUOLINE® 20 system has a proven track record in a great number of demanding environments including water injection, CO2 injection, gas production, gas-lifted oil production and chemical disposal wells, onshore and offshore. DUOLINE® 20 has an outstanding performance history in environments containing produced fluids and gasses with CO2 and H2S. DUOLINE® 20 has successfully prevented corrosion in gas production wells with BHT as high as 292°F (144°C), and is typically used in water injection and gas production service up to 250°F (121°C).
The DUOLINE® 20 liner is fabricated exclusively by Duoline Technologies. The liner is a GRE composite (glass reinforced epoxy resin system) manufactured with a filament winding and high temperature cure process. The only fiberglass-epoxy lining system in the marketplace today with over 33 years of accumulated field history. Duoline Technologies and DUOLINE® 20 have pioneered the trend for fiberglass-liner acceptance around the world. DUOLINE® 20 is manufactured and available in a number of international locations.
DUOLINE® 20 has proven to be the most abrasion resistant coating or lining product in downhole wireline trials in deviated wells. It is acid compatible, impact resistant, resistant to gas service failures common to other coatings or linings, premium connection compatible, chemically resistant and tolerant to common tension and bending loads. Quite simply, DUOLINE® 20 offers unsurpassed corrosion protection by a lining system.