6
Pipes, pipe work and tubes of metal, metal products, liners and casings for use in oil, gas and water wells and boreholes; down hole tools; sleeves; sliding sleeves; well, well bore and borehole liners and casing; subs; down hole subs; metal hardware for use in the construction, maintenance and repair of, and intervention in, oil, gas, condensate and water wells, well bores and boreholes; slips; pipe clamps; plugs; wiper plugs; manifolds; drill collars; pipe protectors; drill pipe protectors; packer retrieving tools; valves; blow-out preventers; gate valves; chokes; check valves; diverter valves, Kelly valves; safety valves; float valves; parts, fittings and accessories for the aforesaid goods
7
Articles, tools, machines and apparatus for drilling, completing and producing fluids from oil, gas, condensate and water wells, well bores and boreholes and for intervention in wells, well bores and boreholes; articles, tools, machines and apparatus for use in drill, completion, intervention and production strings; articles, tools, machines and apparatus for cementing oil, gas, condensate and water wells, well bores and boreholes; battery-operated down hole tools; down hole cementing tools; flow control and flow circulation tools; subsurface valves; well heads; valve assemblies; hydraulic circulation valves; circulation valves; packers; intervention packers; permanent packers; packers actuated by electrical submersible pumps (ESP); retrievable packers; pocket packers; cased hole packers; open hole packers; subs; down hole subs; spacer subs; straddles; gas lift straddles; perforation cleanup straddles; setting tools; non-explosive setting tools; motorized setting tools; hangers; intervention hangers; suspension hangers; retrievable hangers; plugs; hanger plugs; bridge plugs; high pressure plugs; slips; mechanical slips; hydraulic slips; chokes; variable chokes; hydraulically-operated chokes; parts, fittings and accessories for the aforesaid goods
20
Non-metal plugs for use within the oil industry
37
Building construction; repair services; installation service, namely drilling of wells for exploitation of oil and natural gas
42
Scientific and technological services and research and design relating thereto; industrial analysis and research services; analysis for oil-field exploitation; oil well controlling; geological surveys; engineering services; oil-field surveys; oil exploration