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.

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.

Petroleum Geo-Services is engaged in providing geophysical services and oil and gas production services. As of Dec. 31, 2001, Co. operated six Ramform design vessels in its marine seismic data acquisition operations.

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.

Royal Dutch Shell is a holding company. Through its subsidiaries, Co. is engaged in the oil and gas industry. Co. reports its business through four segments: Integrated Gas, which engaged in the liquefaction and transportation of gas and the conversion of natural gas to liquids to provide fuels and other products; Upstream, which engaged in the exploration for and extraction of crude oil, natural gas and natural gas liquids; Downstream, which engaged in oil products and chemicals manufacturing and marketing activities; and Corporate, which comprising Co.'s holdings and treasury organisation, its self-insurance activities and its headquarters and central functions.

Saipem is a global contractor with local presence in Africa, Central Asia, America, the Middle East and South East Asia. Co. provides engineering, procurement, construction and installation services; and engineering, procurement and construction services to the oil and gas industry, both onshore and offshore, with a focus on projects, including activities in remote areas, in deep waters and on projects that involve difficult gas or crude supplies.

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.

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.

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.