Can Polycore thermoplastic liners be used in CO2 rich environments?
CO2 is a small linear molecule that can permeate all thermoplastics to some degree. In order of 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 li
