Oficialūs aprašymai pateikiami originalo kalba (anglų).
This class includes: - production of crude gaseous hydrocarbon (natural gas) - extraction of condensates - 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 - fracking to extract coal seam gas
This class excludes: - support activities for oil and natural gas extraction, see 09.10 - oil and gas exploration, see 09.10 - production of natural gas liquids from crude petroleum (crude oil), see 19.20 - recovery of liquefied petroleum gases in the refining of petroleum, see 19.20 - manufacture of industrial gases, see 20.11 - operation of pipelines, see 49.50