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Lake Crescent is known for brilliant blue waters and exceptional clarity caused by low levels of nitrogen in the water [1] that inhibit the growth of algae. The lake is located in a popular recreational area and features several trails, including the Spruce Railroad Trail , Pyramid Mountain trail, and the Barnes Creek trail to Marymere Falls .
The major global shale oil producers have published their yields for their commercial operations. Fushun Mining Group reports producing 300,000 tons per year of shale oil from 6.6 million tons of shale, a yield of 4.5% by weight. [26] VKG Oil claims to produce 250,000 tons of oil per year from 2 million tons of shale, a yield of 13%. [27]
Their carbon footprints, however, are radically different: conventional reservoirs use the natural energy in the environment to flow oil and gas to the surface unaided; unconventional reservoirs require putting energy into the ground for extraction, either as heat (e.g. tar sands and oil shales) or as pressure (e.g. shale gas and CBM).
In the pyrolysis zone, oil shale particles are mixed with hot shale ash and the pyrolysis is performed at temperatures between 500 °C (930 °F) and 550 °C (1,020 °F). The resulting shale oil vapor is withdrawn from the retort through a vapour tube and recovered by condensation in other equipment. The char residues, mixed with ash, are moved ...
The Cold Lake oil sands are of a roughly circular shape, centered around Bonnyville, Alberta. They probably contain over 60 billion cubic metres (370 billion barrels) of extra-heavy oil-in-place. The oil is highly viscous, but considerably less so than the Athabasca oil sands, and is somewhat less sulfurous.
(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 ...
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Tight oil formations include the Bakken Shale, the Niobrara Formation, Barnett Shale, and the Eagle Ford Shale in the United States, R'Mah Formation in Syria, Sargelu Formation in the northern Persian Gulf region, Athel Formation in Oman, Bazhenov Formation and Achimov Formation of West Siberia in Russia, Arckaringa Basin in Australia, Chicontepec Formation in Mexico, [1] and the Vaca Muerta ...