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Because proven reserves include oil recoverable under current economic conditions, nations may see large increases in proven reserves when known, but previously uneconomic deposits become economic to develop. In this way, Canada's proven reserves increased suddenly in 2003 when the oil sands of Alberta were seen to
A 2008 estimate set the total world resources of oil shale at 689 gigatones—equivalent to yield of 4.8 trillion barrels (760 billion cubic metres) of shale oil, with the largest reserves in the United States, which is thought to have 3.7 trillion barrels (590 billion cubic metres), though only a part of it is recoverable. [15]
Countries by tight oil reserves. 1 language. ... Technically recoverable tight oil resources according to the EIA [1] Rank Country/Region Shale Oil proven reserves
By default countries are ranked by their total proven oil reserves. Note that data related to one parameter may be more up to date than data related to some other. See also separate lists and their source pages: List of countries by proven oil reserves [1] List of countries by oil production [2] List of countries by oil consumption [3]
Curves represent categories of oil in assessment. There is a 95% chance i.e., probability, (P95 and often referred to in the industry as F95) of at least volume V1 of economically recoverable oil, and there is a 5% chance (P05 or F05) of at least volume V2 of economically recoverable oil. [15] There are two non-reserve resource categories:
If all of this oil were economically recoverable, we could supply U.S. energy demand for more than 250 years based on current demand. Source: U.S. Department of Energy Don't run out and buy land ...
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This list of oil fields includes some major oil fields of the past and present. Countries by proven oil reserves 2017. 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]