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Duoline Technologies

Duoline API And Premium Connection Comparison
Duoline technical illustration
    View the Duoline illustration to the right for overview of API and Premium Connections.

    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.

Duoline API And Premium Connection Comparison - JPG
Duoline API And Premium Connection Comparison - JPG
Duoline 20
(250°F working temp)
    HOW DOES DUOLINE®20 WORK?

    DUOLINE® 20, manufactured by DUOLINE® Technologies, is a filament-wound Glass-Reinforced Epoxy (GRE) liner which is installed to OCTG in corrosive service. 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 landbased applications.

    Proven performance leader in corrosive (gas/fluid) injection and disposal for offshore and land-based applications.

    Where Will You Benefit From Using DUOLINE® 20?

  • 250°F working temp
  • CO2/Water injection/Disposal
  • Chemical disposal
  • Gas Production
  • API or Premium Thread Compatibility

    Why Use DUOLINE® 20?

  • 35 year proven field history
  • Lower cost alternative to CRA
  • Durable/Long lasting corrosion protection
  • Most complete corrosion package on the market
  • Most abrasive resistant lining system available

Duoline 20 Product
Duoline 20 Product
Duoline 20 API Connection - Slip Sheet [PDF]
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Duoline 20 API Brochure [PDF]
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Duoline 20 API Tri-Fold [PDF]
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Duoline 20 - Product with cross section revealed.
Duoline 20 - Product with cross section revealed.
Duoline 20 - Product Photo
Duoline 20 - Product Photo
Duoline API Size Chart and Diagram
Duoline API Size Chart and Diagram
Duoline "DL-Ring"
A unique corrosion barrier system enabling placement of GRE internal liners inside any shoulder-to-shoulder premium thread without the need for a special coupling!
    THE CHALLENGE:
    To provide superior internal corrosion protection using a Glass-Reinforced-Epoxy (GRE) lining system with any unmodified free-issue premium threaded tubing or casing.

    THE SOLUTION: IN TWO EFFECTIVE STEPS:
    1. Use DUOLINE® from Duoline Technologies: a premium internal corrosion resistant lining system for oilfield steel tubing and line pipe. DUOLINE® is proven to be wireline abrasion and chemically corrosion resistant in both controlled laboratory testing and through successful performance in more than 75,000,000 feet of downhole application.

    2. Use Duoline Technologies new DL-RING patent pending connection technology that permits the lining system to accommodate any proprietary Premium Connection.

    HOW DOES THE DL-RING WORK?
    Two DL-flares place the DL-CBR in compression during field make-up.
    The unique concept and material composition has been used extensively and successfully in downhole completions with DUOLINE® tubing in numerous other 'FGL' versions of unmodified premium and API connections.

Click Here To Download!
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DL-Ring + Premium Connection [PDF slip sheet]
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Duoline 10-PE
(TEMPERATURE: UP TO 160°F)
    DUOLINE® 10-PE, is a lining system which utilizes a heavy wall high density polyethylene liner and is targeted for use in specific applications for reduction of tubing corrosion in low temperature & low pressure environments.

    DUOLINE® 10-PE is especially suited for shallow water injection well tubing where corrosive water is injected and performs within a temperature range of -20°F + 160°F.

    DUOLINE® 10 BEATING THE HIGH COST OF CORROSION
    DUOLINE®10 is part of the unique Duoline process of inserting liner tubes into steel pipe and filling the annular space with a special cement applied with pressure. Ends are flared back so that both ends are flat and can be protected in the collar. Thus, the interior of the pipe is essentially inert to common acids and corrosive fluids.

    DUOLINE®10 also provides reliable joint protection. The lining is positioned on the pin and collar end of threaded pipe so that the collar is protected from corrosion when corrosion barrier rings are used. Smoothness is ensured by the fact that the interior of the liner is unaltered during the lining process, thereby retaining the 'C' factor of 150.

Duoline 10-PE product
Duoline 10-PE product
Download Duoline 10-PE PDF!
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Duoline 10-PVC
(TEMPERATURE: UP TO 150°F)
    Designed Primarily for shallow or low pressure water disposal and water injection service, Duoline 10-PVC is an internal liner system for downhole tubing that provides proven service in temperature tanges from 0 degree F - 150 degree F. There are existing installations of Duoline 10-PVC with more than 40 years of continuous corrosion free service.

    DUOLINE® 10 BEATING THE HIGH COST OF CORROSION
    DUOLINE®10 is part of the unique Duoline process of inserting liner tubes into steel pipe and filling the annular space with a special cement applied with pressure. Ends are flared back so that both ends are flat and can be protected in the collar. Thus, the interior of the pipe is essentially inert to common acids and corrosive fluids.

    DUOLINE®10 also provides reliable joint protection. The lining is positioned on the pin and collar end of threaded pipe so that the collar is protected from corrosion when corrosion barrier rings are used. Smoothness is ensured by the fact that the interior of the liner is unaltered during the lining process, thereby retaining the 'C' factor of 150.

Duoline 10-PVC image.
Duoline 10-PVC image.
Duoline Technologies
250 W Bluebird Rd.
Gilmer, Texas 75645-7234
Phone: 903.734.1371 | Fax: 903.734.1571
9019 North County Road West
Odessa, Texas 79764
Phone: 432.552.9700   |   Fax: 432.552.9701
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www.duoline.com