Class 037
Construction and Repair Services
Oil drilling;Oil and gas drilling;Extraction of oil;Drilling for crude oil;Oil pumping;Pumping crude oil;Drilling of oil wells;Installation of oil refineries;Drilling and pumping of oil;Oil pumping and extraction;Oil well drilling;Drilling of deep oil or gas wells;Exploitation [extraction] of oil from oil-fields;Oil-field exploitation for the extraction of oil;Gas drilling;Extraction of gas;Installation of gas pipelines;Installation of gas and water pipelines.
Class 039
Transportation & Storage Services
Transportation of crude oil;Transport of oil;Storage of oil;Storage of fuel oil;Transport and distribution of natural gas and liquefied gas;Storage of gas;Distribution of gas;Transport of natural gas;Transmission of oil or gas through pipelines;Transportation of dry gas;Transport of gas by pipelines;Marine transport of liquefied natural gas.
Class 040
Treatment & Processing of Materials Services
Refining of oil;Oil refining;Processing of gas and oil;Treatment of crude mineral oil;Refining of crude oil;Processing of oil;Oil (Processing of -);Petroleum gas liquefaction;Refining of gas;Processing of gas;Recovery of hydrocarbons from gas;Processing of natural gas;Treatment of natural gas.
Class 042
Computer & Software Services & Scientific Services
Exploration of gas and oil;Oil exploration;Prospecting (Oil -);Oil prospecting;Gas exploration;Exploration and searching of oil and gas;Geophysical exploration for the oil industry;Geophysical exploration for the oil, gas and mining industries;Oil field exploration;Analysis of oil deposits.
