0610 Extraction of crude petroleum

This class includes: — extraction of crude petroleum oils This class also includes: — extraction of bituminous or oil shale and tar sand — production of crude petroleum from bituminous shale and sand — processes to obtain crude oils: decantation, desalting, dehydration, stabilization etc. This class excludes: — support activities for oil and gas extraction, see 0910 — oil and gas exploration, see 0910 — manufacture of refined petroleum products, see 1920 — recovery of liquefied petroleum gases in the refining of petroleum, see 1920 — operation of pipelines, see 4930