Gas condensates are liquids, generally straight chain alkanes in the C2 to C6 range, that can condense from gas when the temperature and pressure drop sufficiently low. The terms "condensate" and "distillate" are used interchangeably to describe the liquid produced in tanks, but each term stands for a different material. The liquid has been called "distillate" because it looks like products obtained in refineries by distilling the volatile components from crude oil. But it has also been called "condensate" because it is condensed out of the gas produced by the well. Lease condensate, called so because it is produced at the leas level from oil or gas wells, is the most commonly discussed type of gas condensate.