ExxonMobil, the largest publicly traded international oil and gas company, uses technology and innovation to help meet the world’s growing energy needs. They hold an industry-leading inventory of resources and are one of the world’s largest integrated refiners, marketers of petroleum products and chemical manufacturers. Produces Petrochemicals, Diesel, Plastics and Gasoline.

Royal Dutch Shell is Oil and Gas Company headquartered in Netherland and Regitered Office in UK. Royal Dutch Shell A and Royal Dutch Shell B are not two different companies. Key difference is Royal Dutch A and B shares is related to Taxation and Dividend.

Chevron Corporation is USA based Multi-National Energy Company. Chevron is one of the world’s leading integrated energy companies producing safe, reliable energy now and for the future.

Petrochina is second largest Oil and Gas Company in China with headquarters in China. Explores and Produces Oil and Gas. Markets PetroChemicals and other Chemicals.

Total S.A is Oil and Gas, Power Generation, Solar Power, Renewable Energy Company with headquarters in Paris, France. With operations in more than 130 countries, Total is the fourth-largest international oil and gas major as well as a global leader in liquefied natural gas (LNG) and a major player in low-carbon energies. Total Company also rank among the world’s top ten refining and petrochemicals companies.

BP is UK based multi-national Oil and Gas company with 74000 employees and present in 70 countries as on Dec-31-2017. BP Sales and other Operating Revenues is around 240 Billion USD. 

Conglomerate Business and Multi-Sector company with spread in Retail, Telecom, PetroChemicals, Energy, Textiles, Natural Resources with head quarters in Mumbai of India. Approximate Employee Count 188,000 as on 2017.

China Petroleum & Chemical Corporation is also known as SINOPEC is China based oil and gas company. Company has over 249,000 employees as on 2018.

USA based Energy, Power, Electricity Generation and Utilities Company. NextEra Energy, Inc is World's Largest Producer of Renewable, Wind and Solar Energy

General Electric is USA based conglomerate Technology Multi-National Company. Key business areas of GE are GE Additive, GE Aviation, GE Capital, GE Digital, GE Healthcare, GE Lighting, GE Power, GE Renewable Energy, GE Transportation. They have over 283,000 employees as on 2018.

Explores, Produces and Markets Oil and Gas with headquarters in Beijing, China.

ConocoPhillips is USA Based Energy, Oil and Gas Company. They have 10,800 employees across 16 countries and they work in a truly integrated way to find and produce oil and natural gas.

Norway based Energy Company. Every single day they deliver oil, gas and wind power to energise the lives of more than 170 million people. Leading Explorer of new Oil and Gas fields. They produce renewable energy like Wind Power, Solar Power.

Petroleum Refining, Oil and Gas company with headquarters in Moscow, Russia.

Oil and Gas company with headquarters in Rome, Italy.

Energy Company with business in Electricity Generation, Electricity Distribution, Gas Distribution. Headquarters is in Rome, Italy.

Energy company and Electricity Utility company with businesses in electricity and natural gas supply.

Energy Company and Oil and Gas company with headquarters in Moscow, Russia.

Schlumberger is the world's leading provider of technology services for Oil and Gas industry in the key areas of reservoir characterization, drilling, production, and processing.. Working in more than 85 countries and employing approximately 100,000 people who represent over 140 nationalities, Schlumberger supplies the industry's most comprehensive range of products and services, from exploration through production and integrated pore-to-pipeline solutions for hydrocarbon recovery that optimize reservoir performance.

Canada based Energy, Oil and Gas Company.

Gazprom is Russia's biggest Oil and Gas Company. Gazprom is a global energy company focused on geological exploration, production, transportation, storage, processing and sales of gas, gas condensate and oil, sales of gas as a vehicle fuel, as well as generation and marketing of heat and electric power.

Oil and Gas sector company with headquarters in Texas, USA.

Natural Gas Producing company with headquarters in Russia.

China Shenhua is China based Energy and Coal Mining Company.