Guyana ranked 2nd to Russia for most oil finds in 2019 - Guyana Times
Profiling the five largest oil and gas companies in the world in 2019
OPEC : OPEC Share of World Crude Oil Reserves
China's Top Producers Ramp Up Unconventional Natural Gas Volumes - Natural Gas Intelligence
Top 10 large oil refineries
Oil and gas sector tops Forbes 2019 list of world's largest public firms in revenue generation, finds GlobalData - GlobalData
The Ten Countries That Dominate World Fossil Fuel Production
Chart: The Biggest Oil and Gas Companies in the World | Statista
Revealed: the 20 firms behind a third of all carbon emissions | Climate crisis | The Guardian
Largest oil and gas companies: Ranking the top 10
The largest oil reserves in the world are found in these 15 countries
What are the supermajor oil companies? - Quora
Major Oil and Gas Discoveries of 2019 | Hellenic Shipping News Worldwide
U.S. Energy Information Administration - EIA - Independent Statistics and Analysis
Oil and gas report - CDP
Oil and gas sector tops 2019 list of world's largest companies - Petroleum Australia
Nauticus Live
Biggest oil companies 2021 | Statista
Ranking of the Top 10 Global Oil and Gas Companies in 2019. Source:... | Download Scientific Diagram
World: Data focus – Few major changes
