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(The data below does not seem to include shale oil and other unconventional sources of oil such as tar sands. For instance, North America has over 3 trillion barrels of shale oil reserves, [ citation needed ] and the majority of oil produced in the US is from shale, leading to the paradoxical data below that the US will finish all its oil at ...
In 2003, the oil shale development program was initiated in the United States, and in 2005, the commercial leasing program for oil shale and tar sands was introduced. [ 8 ] [ 9 ] As of May 2007, Estonia is actively engaged in exploitation of oil shale on a significant scale and accounts for 70% of the world's processed oil shale. [ 10 ]
In addition to being much smaller than the Canadian oil sands deposits, the US oil sands are hydrocarbon-wet, whereas the Canadian oil sands are water-wet. [45] This requires somewhat different extraction techniques for the Utah oil sands from those used for the Alberta oil sands. Russia holds oil sands in two main regions.
The global oil-shale industry began to revive at the beginning of the 21st century. In 2003, an oil-shale development program restarted in the United States. Authorities introduced a commercial leasing program permitting the extraction of oil shale and oil sands on federal lands in 2005, in accordance with the Energy Policy Act of 2005. [50] [51]
In view of the expected importance of oil shale in the near future, President Woodrow Wilson in 1916 established two Naval Oil Shale Reserves, large tracts of prime oil shale that were kept from passing into private ownership. Oil Shale Reserve 1 (26,406 acres) was in Garfield County, Colorado, eight miles west of the town of Rifle. Oil Shale ...
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Oil shale formation takes place in a number of depositional settings and has considerable compositional variation. Oil shales can be classified by their composition (carbonate minerals such as calcite or detrital minerals such as quartz and clays) or by their depositional environment (large lakes, shallow marine, and lagoon/small lake settings).
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