natural gas
the methane-rich combustible gas coming from natural fields. It contains varying amounts of heavier hydrocarbons that become liquefied at atmospheric pressure; it may also contain water vapour, sulphur compounds such as hydrogen sulphide and other nonhydrogen gases such as carbon dioxide, nitrogen or helium
GRM: n.
Note: for domestic and industrial use it can be stored or transported by pipeline, refrigeration, carriers or in drums, in liquefied or gas form; often associated with deposits of petroleum
References:
SPE casinghead gas
SPE casing head gas
SPE compressed natural gas
SPE dry gas
SPE liquid natural gas
SPE liquefied natural gas
SPE stripped gas
SPE sour gas
SPE solution gas
SPE synthetic natural gas
SPE sweet gas
SPE substitute natural gas
SPE associated gas
SPE dissolved natural gas
SPE dried gas

ENERGY TERM COURTESY OF ENERGY.EU