原油的开采

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