42 Scientific and technological services, namely, research analysis and testing in the field of production, processing, transport and supplying of water, hydrocarbons, petroleum, natural gas, refinery gases, gas, liquid gas; analysis, research and testing services of chemical and petrochemical apparatus, of oil or gas wells and of oil or gas fields, including on-shore, marine or offshore oil or gas wells and oil or gas fields; research, design and engineering services of installations and plants for the production, processing, transport and supplying of water, hydrocarbons, petroleum, natural gas, refinery gases, gas, liquid gas, of chemical and petrochemical apparatus, of oil or gas wells and of oil or gas fields, including on-shore, marine or offshore oil or gas wells and oil or gas fields; research services, engineering and providing technical calculations in the fields of extraction, production, refining, processing of water, hydrocarbons, petroleum, natural gas, refinery gases, gas, liquid gas and chemicals; development of industrial processes for processing water, hydrocarbons, petroleum, natural gas, refinery gases, gas, liquid gas and chemicals; exploration of water, petroleum and natural gas; analyses of water, oil and gas wells; consulting, research and development of new technologies in relation to reclamation of areas, installations and/or industrial processes in the field of production, processing, transport and supplying of water, hydrocarbons, petroleum, natural gas, refinery gases, gas, liquid gas, of chemical and petrochemical apparatus, of oil or gas wells and of oil or gas fields, including on-shore, marine or offshore oil or gas wells and oil or gas fields; design services of railways, rail networks and infrastructure for the transport of people and goods; engineering services, design and development of installations, equipment and plants for generating, storing and transporting energy; engineering, design and development services of floating and underwater means in the nature of barges, semisubs, vessels and platforms and of submarines, AUT (autonomous underwater vehicles), ROV (Remotely Operated Vehicles) and subsea packages and modules; engineering, design and development services of marine, lake and river infrastructure in the nature of bridges, harbors, jetties, weirs, dams