Saudi oil reserves are the largest in the world, and Saudi Arabia is the world's leading oil producer and exporter. Oil accounts for more than 90% of the country's exports and nearly 75% of government revenues. Proven reserves are estimated to be 263 billion barrels, about one-quarter of world oil reserves. | Saudi oil reserves are the largest in the world, and Saudi Arabia is the world's leading oil producer and exporter. Oil accounts for more than 90% of the country's exports and nearly 75% of government revenues. Proven reserves are estimated to be 263 billion barrels, about one-quarter of world oil reserves. |