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Some statistics on this page are disputed and controversial—different sources (OPEC, CIA World Factbook, oil companies) give different figures. Some of the differences reflect different types of oil included. Different estimates may or may not include oil shale, mined oil sands or natural gas liquids.
The list is incomplete; there are more than 25,000 oil and gas fields of all sizes in the world. [1] However, 94 % of known oil is concentrated in fewer than 1,500 giant and major fields. [ 2 ] Most of the world's largest oilfields are located in the Middle East , but there are also supergiant (>10 billion bbls ) oilfields in Brazil, Mexico ...
The world's 932 giant oil and gas fields are considered those with 500 million barrels (79,000,000 m 3) of ultimately recoverable oil or gas equivalent. [1] Geoscientists believe these giants account for 40 percent of the world's petroleum reserves .
A 2016 conservative estimate set the total world resources of oil shale equivalent to yield of 6.05 trillion barrels (962 billion cubic metres) of shale oil, with the largest resource deposits in the United States accounting for more than 80% of the world total resource. [2]
A map of world oil production (2013) Oil-producing countries (information from 2006 to 2012) This article includes a chart representing proven reserves, production, consumption, exports and imports of oil by country.
For a kerogen deposit to be even remotely feasible, the U.S. Department of Energy estimates that the formation would need to be at least 15 feet thick and yield more than 15 gallons per ton of rock.
Measuring 280 by 30 km (170 by 19 mi) (some 8,400 square kilometres (3,200 sq mi)), it is by far the largest conventional oil field in the world, [1] and accounts for roughly a third of the cumulative oil production of Saudi Arabia as of 2018. [2] [3] Ghawar is entirely owned and operated by Saudi Aramco, the state-run Saudi oil company. In ...
The world's largest deposits of oil sands are in Venezuela and Canada. The geology of the deposits in the two countries is generally rather similar. They are vast heavy oil, extra-heavy oil, and/or bitumen deposits with oil heavier than 20°API, found largely in unconsolidated sandstones with similar properties. "Unconsolidated" in this context ...