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The desert kingdom has around 16% of the worldâs proven oil reserves and is the biggest global exporter of petroleum liquids. There is little doubt as to why its national oil company, Saudi Aramco, the biggest energy company in the world, generates over $1 billion in revenue every single day.
American multinational oil and gas company ExxonMobil is the fourth biggest oil and gas company in the world, with production of 2.185 million barrels of crude oil and 12.322 billion cubic feet of natural gas per day in 2012.