
98
C
Compressibility
(3)Natural gas in its gaseous state that has been compressed. (4) Is natural
gas that is under pressure. The pressure reduces the volume occupied for the
gas so it can be contained in a smaller vessel.
Compressibility: The volume change of a material when pressure is
applied.
Compressibility Factor: The ratio of the actual volume of a gas divided by
the volume that would be predicted by the ideal gas law, usually referred to
as the “Z” factor.
Compression: (1) The act or process of contracting a volume of gas into a
smaller space. (2) Natural gas is compressed during transportation and stor-
age. The standard