Wellbore plungers with non-metallic tubing-contacting surfaces and wells including the wellbore plungers

A wellbore plunger configured to be utilized within a tubing conduit of downhole tubing, the downhole tubing including a non-metallic tubing material defining a non-metallic tubing surface that at least partially defines the tubing conduit, the wellbore plunger comprising:

• an uphole region defining an uphole bumper-contacting surface;
• a downhole region defining a downhole bumper-contacting surface configured to engage with a bottom bumper of a well;
• and
• a plunger body extending between the uphole region and the downhole region and defining a downhole tubing-contacting surface, wherein:
• (i) the downhole tubing-contacting surface is configured for sliding contact with the non-metallic tubing surface when the wellbore plunger is utilized within the tubing conduit;
• (ii) the downhole tubing-contacting surface defines a sealing structure configured to form an at least partial fluid seal with the downhole tubing during sliding contact between the wellbore plunger and the non-metallic tubing surface;
• and
• (iii) the downhole tubing-contacting surface is at least substantially defined by a non-metallic tubing-contacting material.