BP is an integrated oil and gas group based in the United Kingdom. Co. is engaged in the exploration and production of crude oil and natural gas; refining, marketing, supply and transportation; and the manufacture and marketing of petrochemicals. Co. operates globally, with business activities in Europe, the U.S., Canada, Russia, South America, Australasia, Asia and parts of Africa. Co. operates in two business segments: Exploration and Production - including oil and natural gas exploration and development and production; and Refining and Marketing- activities include the refining, manufacturing, supply and trading, marketing and transportation of crude oil, petroleum and petrochemicals.

Eni is engaged in the oil and gas exploration and production, gas marketing operations, management of gas infrastructures, power generation, petrochemicals, oil field services and engineering industries. Co.'s operations are divided into three segments; Exploration and Production (oil and natural gas exploration and field development and production, as well as LNG operations), Gas and Power (supply, trading and marketing of gas and electricity, managing gas infrastructures for transport, distribution, storage, re-gasification, and LNG supply and marketing), and Refining and Marketing (supply of crude oil, refining and marketing of refined products). Co. maintains operations in 73 countries.

Equinor is engaged in oil and gas exploration and production activities. Co. is primarily focused on exploration, development and production of oil and gas on the Norwegian continental shelf (NCS). Co.'s operations are organized into four segments. The Development and Production Norway and Development and Production International segments explore, develop, produce and extract crude oil, natural gas and natural gas liquids. The Marketing, Processing and Renewable Energy segment markets, trades, transports and processes oil and natural gas and renewable energy. The Other segment consists of global well and project delivery, research and develpoment, and business development.

Galp Energia is a holding company. Through its subsidiaries, Co. operates in the following segments: exploration and production, with activities relating to exploration, development and production of hydrocarbons, particularly in Angola, Brazil and Mozambique; refining and marketing, which owns refineries in Portugal and also includes activities relating to the retail and wholesale commercialization of oil products; and gas and power, which covers the purchasing, commercialization, distribution and storage of natural gas and electric and thermal power production. As of Dec 31 2014, Co. had proved and probable reserves of 638.0 million barrels of oil equivalent.

Petrofac is a holding company. Co. is engaged as a service provider to the oil and gas production and processing industry. Co. designs, builds, operates and maintains oil and gas facilities. Co. has three segments: Engineering & Construction, which provides engineering, procurement and construction project execution services to the onshore and offshore oil and gas industry; Engineering & Production Services, which includes engineering and production services activities to the oil and gas industry; and Integrated Energy Services, which provides an integrated service for clients, with projects that cover upstream developments project, related energy infrastructure projects, and investment.

Repsol is an oil and gas company. Co. is engaged in all the activities relating to the oil and gas industry, including exploration, development and production of crude oil and natural gas, transportation of oil products, liquefied petroleum gas (LPG) and natural gas, refining, the production of a wide range of oil products and the retailing of oil products, oil derivatives, petrochemicals, LPG and natural gas, as well as the generation, transportation, distribution and supply of electricity. Co. operates in more than 40 countries. Co.'s operations are divided into four segments: Upstream, Downstream, LNG and Gas Natural Fenosa.

SBM Offshore is a holding company. Co. provides floating production solutions to the offshore energy industry, over the full product life-cycle. Co.'s main activities are the design, supply, installation, operation and life extension of floating production, storage and offloading (FPSO) vessels. Other products include semi-submersibles, tension-leg platforms, floating production storage and offloading liquefied natural gas, turret mooring systems, brownfield and offshore (off) loading terminals. As of Dec 31 2015, Co.'s fleet consisted of 10 FPSOs, two floating storage and offloadings, one mobile offshore production unit, one semisubmersible in operation worldwide.

Schlumberger provides technology for reservoir characterization, drilling, production and processing to the oil and gas industry. The company has four segments: Reservoir Characterization, which consists of the principal technologies involved in finding and defining hydrocarbon resources; Drilling, which consists of the principal technologies involved in the drilling and positioning of oil and gas wells; Production, which consists of the principal technologies involved in the lifetime production of oil and gas reservoirs; and Cameron, which consists of the principal technologies involved in pressure and flow control for drilling and intervention rigs, oil and gas wells and production facilities.

Soitec is a manufacturer of silicon and integrated circuits. Co. offers products based on Silicon-on-Insulator (SOI), which serves to support the manufacturing of more energy-efficient integrated circuits. Co.'s operations can be divided into three divisions: Electronics, Solar Energy and Lighting. The Electronics division manufactures and sells substrates and components intended for the microelectronics industry; the Solar Energy division manufactures and sells photovoltaic modules, designs and constructs turnkey projects, and operates photovoltaic power plants; and the Lighting division isolates resources to develop materials designed for the production of light emitting diodes.

Subsea 7 is a provider of seabed-to-surface engineering, construction and services contractor to the offshore energy industry. Co. provides products and services required for subsea field development, including project management, design and engineering, procurement, fabrication, survey, installation, and commissioning of production facilities on the seabed and the tie-back of these facilities to fixed or floating platforms or to the shore. Co. also provides products and capabilities to deliver full Life of Field services to its clients. Through its i-Tech Division, Co. provides remotely operated vehicles and tooling services to support exploration, production and drilling activities.

TechnipFMC is global leader in oil and gas projects, technologies, systems, and services. Co. offers subsea, surface, onshore, and offshore solutions for oil and gas projects. Co. serves customers worldwide. With Co.'s technologies and production systems, integrated expertise, and comprehensive solutions, Co. is transforming Co.'s clients' project economics. Co. is uniquely positioned to deliver greater efficiency across project lifecycles from concept to project delivery and beyond. Through innovative technologies and improved efficiencies, Co.'s offering unlocks new possibilities for Co.'s clients in developing their oil and gas resources.

Tenaris manufactures and supplies seamless steel pipe products for the global oil and gas industry, as well as other industrial applications. Co. operates an integrated worldwide network of steel pipe manufacturing, research, finishing, and service facilities with industrial operations in the Americas, Europe, Asia, and Africa. Co. produces pipes for boilers, heat exchangers, hydraulic cylinders, automotive, structural and other industrial applications and supplies welded steel pipes for oil and gas pipelines in the South American region. Its principal products include casing, tubing, line pipe, and mechanical and structural pipes. Co.'s organizes its business around one segment: Tubes.

Total is an international integrated oil and gas company also active in solar and biomass energy sources. Co. engages all aspects of the petroleum industry, including Upstream operations (oil and gas exploration, development and production, and LNG (Liquefied Natural Gas)) and Downstream operations (refining, petrochemicals, specialty chemicals, marketing and marketing and trading and shipping of crude oil and petroleum products). In addition, Co. is engaged in the coal mining and power generation sectors. Co.'s worldwide operations are conducted through three business segments: Upstream, Refining & Chemicals, and Marketing & Services.

Vallourec SA is a France-based company, which specializes in the production of seamless and welded steel tube products for industrial applications. It operates through two segments: Seamless Tubes and Specialty Products. For the oil and gas industry, it designs and develops a comprehensive range of products including seamless tubes and connections for drilling operations, line pipes and well equipment. For the power generation market, it offers tubes that withstand severe temperature and pressure conditions. Its solutions enable power companies to meet the challenges of energy efficiency and reduce CO2 emissions in power plants. It also offers a wide range of tubes for petrochemical installations (refineries), for mechanical engineering applications (hydraulic cylinders and machine tools), for the automotive industry, for construction (stadiums, other complex buildings and structures) and for various other industrial sectors. It operates through Vallourec Solucoes Tubulares do Brasil.