Polycore™ liners work with all types of fracking fluids, that show virtually no sign of wear due to abrasion.

Our liners typically reduce power requirements due to the reduced surface roughness compared to steel. When running your WEM (Well Evaluation Model) for rod pump wells, injection wells, disposal wells, or hydraulic fracing please use the following surface roughness values. These values are tested and verified values from real samples and tested to the RZ DIN standard. New Steel – 35 microns Polycore™ Liners – 1.5 microns.

Our in-house knowledge base knows which well environments are best suited for our technology, and will help ensure our liners are only used in suitable applications. Special care must be taken to not exceed the temperature rating of our products. Consider heat created by submersible pumps; and, well treatments (such as hot oil flushes). Excessive heat will cause thermoplastic liners to soften, swell, and weaken. The effects of heat are irreversible.

Our technology team is continually developing new technologies, increasing the number of suitable applications, including CO₂ and H₂S rich environments. Please refer to our installation instructions for proper handling techniques.

CO₂ is a small linear molecule that can permeate all thermoplastics to some degree. In order for permeation to occur, the CO₂ must be exposed to the liner in a free gas state. If the CO₂ is dissolved or entrained in produced oil or injected water, it will not permeate the thermoplastic liner. The rate and degree of permeation is dependent on the temperature of the line and gas, the pressure of the gas, and the CO₂ content in the gas. These three variables are codependent on each other, and in many cases where either the CO₂ content of the gas is very low, the temperature is low, or the reservoir pressure is too low, the CO₂ gas may not permeate through the thermoplastic liner enough to cause a problem. Polycore™ recommends speaking with our technology team prior to the installation of any Polycore™ product in any particular well Environments. Our team will ensure the technology you have chosen is suitable for the specific application. Polycore™ is also developing a CO₂ / H₂S impermeable liner which will be available very soon.

No. Polycore technology has proven to be very durable and resistant to wireline damage.

We only use approved industry leading thermoplastic tube manufacturers.

Modified proprietary connections have been developed for aggressive applications and will be available soon.

Yes. Due to the reduced surface roughness of our thermoplastic lines, scale/paraffin wax build-up is generally minimized.

The thermoplastic liner on the end of the tubing is a slightly larger diameter than the pin end. When the coupling is screwed on to the tubing, the coupling threads cut into the thermoplastic liner and create a barrier. Any exposed coupling in the J-Area is protected by an internal thermosetting Fusion Bonded Epoxy Coating. Rings, donuts, or premium connections are never required in most conventional applications. Polycore™ technology provides 100% holiday free coverage along the entire string of tubing.

Yes. The installation of Modified Polycore™ and Polycore™ is based on a mechanical bond which allows it to be installed in used tubing directly over most existing plastic coatings with no additional cleaning or surface preparation.

Yes, but Polycore™ recommends using new fiberglass rods. Used fiberglass rods may have wear spots with exposed glass fibers which can damage the thermoplastic. If used fiberglass rods are going to be used, the need to be resin rich on the surface with no wear spots.

Tubing can be drifted prior to re-running. Because the mechanical bond creates some compression on the thermoplastic liner, cuts during mishandling may cause buckling and an ID restriction. A visual inspection can also be conducted to identify liner damage on the pin ends or throughout the tubing.

No. When using Polycore™ thermoplastic liners rod guides are not required or recommended. Operators who use rod guides with thermoplastic lined tubing will dramatically shorten the life of their liner.

No. Polycore™ products are chemically inert and can be used with most types of well stimulation fluids, including acid. If you are using unusual treatment chemicals in your well, please contact your representative for a recommendation specific to your case. Polycore™ can perform special testing if required.

Our unique installation process provides a mechanical bond down the entire length of the tubing. Our molded end finish secures the liner in place on both ends of the tube, mitigating any movement and intrusion of corrosive fluids behind the liner.

No, we have never seen a sand-related problem.

The steel tubing is expected to provide 100% of the structural integrity of a lined tubing string. The liner wall thickness design is strictly performance based.