Administration of oil and gas leases; Project business management and administration; Operation of businesses (for others); Foreign trade consultancy services; Marketing consultancy

Drilling; Drilling of deep oil or gas wells; Extraction of oil; Oil pumping; Mining extraction; Installation and repair of underwater pipelines; Civil engineering consultancy (construction and maintenance); Construction; Construction consultation; Construction engineering; Marine construction; Mechanical engineering services (construction); Oil pipeline construction; Project preparation relating to construction engineering; Structural engineering services (construction); Supervision of construction projects; Underwater construction; Underwater construction services; Repair, maintenance and installation consultancy services

Oil distribution services; Transportation of oil by pipeline; Distribution of gas; Gas distribution services; Gas supplying; Storage of gas; Transportation by sea; Transportation logistics; Advisory services relating to transportation; Transport by pipeline; Charter of sea vessels; Transport consultancy services

Gas processing and treatment; Gas processing services; Processing of oil; Processing of materials

Gas, oil, petroleum, minerals exploration (prospecting); Analysis for oil-field exploitation; Oil-well testing; Engineering project management services; Geological surveys; Engineering surveys and inspections; Engineering consultancy; Development of industrial processes; Conducting technical project studies; Research, engineering and technical consultancy for industry; Technical engineering; Oil-field surveys