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Western Falcon, a Texas manufacturer of tubular linings for downhole applications, has selected Victrex Peek polymer for a high-performance seamless thermoplastic liner.

The new liner, called Extremetube, offers optimal resistance to damage from artificial lift rod wear, wireline and slickline, coiled tubing and other common downhole tools.

Rob Davis, vice-president of Western Falcon, said: ‘Victrex Peek polymer acts as a barrier, isolating the corrosive and abrasive fluids and gasses from standard oil country tubular goods (OCTG).

‘The unique mechanical properties of the polymer, together with its abrasion resistance, indicate that it will perform well as a long-term wear solution, protecting the tubing from internal rod wear and erosion from produced fluids and gasses.

‘Western Falcon liners generally extend the life of tubulars by more than 25-times the life of bare tubulars in highly corrosive and deviated wells.’ Western Falcon’s mechanical bonding process, coupled with the elasticity of Victrex Peek polymer, allows the protective liner to move relative to the steel tubing without compromising its ability to remain bonded to, and continue protecting, the steel tubing.

This combination can replace expensive corrosion resistant alloy (CRA) tubulars.

Victrex Peek polymer is one of the strongest high tensile (14,500 psi) and high temperature (260C/500F) polymers available.

It maintains short-term mechanical properties at temperatures approaching its melting point of 340C/644F and offers the broadest range of resistance to acids, surfactants, solvents and steam.

Victrex Peek polymer enables the liner to offer a significant increase in temperature stability and tensile strength as well as outstanding long-term creep and aging properties.

Victrex Peek polymer is highly abrasion and chemically resistant to well fluids, drilling fluids and hydrocarbon mixtures while providing extremely low permeability to gasses such as H2S and CO2.

Extremetube liners have applications in: steamflood operations, gas lift wells, water injection, disposal wells, high pressure/ high temperature producing wells, submersible pumped wells and more.

Extremetube liners reduce operating costs associated with rod-on-tubing wear and tubing corrosion failures.

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