Extraction of crude petroleum

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, stabilisation etc.
This class excludes:
- support activities for oil and natural gas extraction, see 09.10
- oil and gas exploration, see 09.10
- manufacture of refined petroleum products, see 19.20
- recovery of liquefied petroleum gases in the refining of petroleum, see 19.20
- operation of pipelines, see 49.50