Extraction of natural gas

This class includes: - production of crude gaseous hydrocarbon (natural gas) - extraction of natural gas liquids from field facilities - draining and separation of liquid hydrocarbon fractions - gas desulphurisation - extraction of coal mine methane This class also includes: - mining of hydrocarbon liquids, obtained through liquefaction or pyrolysis - extraction of coal seam gas

This class excludes: - support activities for oil and natural gas extraction, see 0910 - oil and gas exploration, see 0910 production of natural gas liquids from crude petroleum (crude oil), and recovery of liquefied petroleum gases in the refining of petroleum, see 1920 - manufacture of industrial gases, see 2011 - operation of pipelines, see 4930