Oil Shale. Utah's oil-shale deposits are located in the Uinta Basin of northeastern Utah. The estimated in-ground resources are over 300 billion barrels of oil—some of the largest oil-shale resources in the world. For decades many politicians …
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Deposits of oil shale may be found at varying depths below the surface. Oil shale occurs in nearly 100 major deposits in 27 countries worldwide (3). It is generally found atshallow depths of lessthan 900 meters, whereas …
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Oil-shale deposits are in many parts of the world. They range in age from Cambrian to Tertiary and were formed in a variety of marine, continental, and lacustrine depositional environments. The largest known deposit is in the Green River Formation in the western United States; it contains an estimated 213 billion tons of in-situ shale oil (about 1.5 trillion U.S. barrels).
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Many oil-shale deposits contain small, but ubiquitous, amounts of sulfides including pyrite (FeS 2) and marcasite (FeS 2, but which physically and crystallographically distinct from pyrite), indicating that the sediments probably accumulated in dysaerobic (a depositional environment with 0.1–1.0 mL of dissolved oxygen per liter of water) to ...
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The various oil shale deposits that have been mined around the world since the early 20th century have ranged from shale to marlstone to carbonate mudstone. All are relatively fine-grained sedimentary rocks, as deposits of coarse sediment such as sand are not compatible with the preservation of organic material.
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Oil shale, a high-ash organic mineral deposit rich in kerogen (nearly insoluble in common organic solvents), requires high-temperature pyrolysis to yield useful oil and gas products (Wang et al., 2022a; Guo et al., 2023; Zhang et al., 2023).China's oil shale resources exceed one trillion tons (equivalent to 570 billion tons of shale oil reserves) and thus serve as …
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The Stuart oil-shale deposit, estimated to contain 3 billion barrels of in-situ shale oil, is under development by the Southern Pacific Petroleum (SPP) and Central Pacific Minerals (CPM) companies. As of February 2003, 1.16 million tons of oil shale were mined by open pit from which 702,000 barrels of shale oil were recovered by the Taciuk ...
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These deposits contain beds of oil shale ranging from 0.8 to 2.6 m in thickness but are high in sulfur (4-6 percent, dry basis). The oil shale was used to fuel two electric power plants; however, the operation was shut down owing to high …
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The following maps show the drilling history and oil and gas production of selected low-permeability, continuous-type shale reservoirs. Selected geologic characteristics pertinent to occurrence of producible oil and …
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Canada's oil-shale deposits range from Ordovician to Cretaceous age and include deposits of lacustrine and marine origin; as many as 19 deposits have been identified (Macauley, 1981; Davies and Nassichuk, 1988). During the 1980s, a …
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Shale oil is a type of oil found in shale rock formations that must be hydraulically fractured to extract. ... This means a hole has been drilled straight down into a deposit and a pump jack is ...
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The reserves of oil shale are enormous (nearly 1000 times more energy is stored in oil shales than in coal deposits 2) but so far it has found little use because better alternatives like coal, crude oil, and natural gas are available. The main …
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Oil shale deposits are sedimentary rock formations that contain significant amounts of organic material, primarily kerogen, which can be converted into oil through pyrolysis or other thermal processes. These deposits are important as a potential source of hydrocarbons, contributing to the broader landscape of fossil fuel formation and distribution.
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Under authority and pursuant to the provisions of the act of Congress approved June 25, 1910 (36 Stat. 847), as amended by the act of August 24, 1912 (37 Stat. 497), it is hereby ordered that subject to valid existing rights the deposits of oil shale, and lands containing such deposits owned by the United States, be, and the same are hereby, temporarily withdrawn from lease or other …
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The estimated shale oil resources of the top 12 countries together account for 99 percent of the world's total reserves and production. The "in-place resources" of each country are commonly given in oil equivalents—that is, the number of …
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The Ethiopian oil shale deposits occur between two volcanic flows. The oil shale-bearing sedimentary basins in Ethiopia are one of the striking examples of an Inter-Trappean continental sedimentation. There is strong evidence that the NNW–SSE fault system provided the tectonic configuration for the development of grabens and half-grabens.
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Deposits of oil shale are in many parts of the world. These deposits, which range from Cambrian to Tertiary age, may occur as minor accumulations of little or no economic value or giant deposits that occupy thousands of square kilometers and reach thicknesses of 700 m or more.
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Oil shale is a misnomer because kerogen isn't crude oil, and the rock holding the kerogen often isn't even shale. ... long horizontal wells—"long laterals" in industry parlance—and huge multistage fracturing jobs maximize output from shale deposits. For example, in the Bakken producers routinely drill laterals that exceed 10,000 feet in ...
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Importantly, unconventional plays account for more than 50 percent of remaining U.S. oil reserves, with Texas alone holding more than 60 billion barrels of recoverable oil in shale plays. The reserves data distinguish between reserves in existing fields and new projects, and potential reserves in recent discoveries and still undiscovered fields.
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During the oil crisis of the 1970's, major oil companies spent several billion dollars in various unsuccessful attempts to commercially extract shale oil. After initial attempts proved to be too expensive and were shelved some ten years ago, a host of energy companies are revisiting technologies to successfully extract kerogen from shale and ...
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Utah oil shale was deposited as organic-rich sediments in a freshwater lake (Lake Uinta) about 50 million years ago. These deposits are exposed around the Uinta Basin's rim in the Green River Formation—also a major oil and gas producer …
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The oil shale deposits in the U.S. are largely situated under lands controlled by the federal government. Other countries, like Venezuela, have state-owned oil conglomerates; perhaps the U.S. will dabble in socialist energy policy in the future. The price is certainly right — Venezuela's state oil company posted revenues of $10.7 billion in ...
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This caused evaporite (salt, nahcolite, and dawsonite) deposits to be laid down with the oil shale. The nahcolite and dawsonite also comprise important resources of soda and aluminum. There are technically no reserves of oil shale in the United States because one must have demonstrated commercial production in order to book reserves of oil. In ...
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The oil-shale deposits of Australia range from small and noneconomic to deposits large enough for commercial development. The "demonstrated" oil-shale resources of Australia total 58 billion tons, from which about 3.1 billion tons of oil (24 billion barrels) is …
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Lacustrine sediments of the Green River Formation were deposited in two large lakes that occupied 65,000 km2 in several sedimentary-structural basins in Colorado, Wyoming, and Utah during early through middle Eocene time. The Uinta Mountain uplift and its eastward extension, the Axial Basin anticline, separate the…
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The USGS Energy Resources Program has studied oil shale resources of the United States, with a significant effort on the Eocene Green River Formation of Colorado, Utah, and Wyoming. This formation contains the largest oil shale deposits in the world. Oil shale, despite the name, does not actually contain oil, but is a precursor of oil that is converted to …
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Oil shale deposits in the Western United States are the most concentrated hydrocarbon resource in the world. Despite the national significance of this resource, the Federal government is currently doing extraordinarily little to …
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The occurrence of oil shale in the Green River Formation in Colorado, Utah, and Wyoming has been known for many years. During the early 1900s, it was clearly established that the Green River deposits were a major resource of shale oil (Woodruff and …
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Map of Colorado showing proved oil fields, oil shale deposits, location of anticlinal structures, oil and gas seeps, and other indications of oil and gas. This is the first in a series of map of the oil and gas fields of Colorado, showing the now-historic discoveries at the time. While the main focus is oil, also included are locations of gas ...
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Marine oil shale deposits are the result of salt water algae, acritarchs, and dinoflagellates. The origin of the oil shale may impact its quality and/or the other minerals that are found within the deposit. Distribution . Deposits of oil shale may be found at varying depths below the surface. Oil shale occurs in nearly 100 major deposits in 27 ...
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Oil shale was formed from sediments laid down in ancient lakes, seas, and small terrestrial water bodies such as bogs and lagoons. Oil shales deposited in large lake basins, particularly those of tectonic origin, are commonly of considerable …
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Whether we are talking shale oil or oil shale, there is a common denominator: both cost more per barrel for extraction than more conventional oil deposits. This means that both are especially ...
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Lamosite deposits make up some of the largest oil shale formations in the world. Torbanite deposits are found mainly in Scotland, Australia, Canada, and South Africa. Oil shales from marine environments formed mostly from deposits of …
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An oil shale deposit at Autun, France,was exploited commercially as early as 1839. The Scottish oil shale industry began about 1859, the year that Colonel Drake drilled his pioneer well at Titusville. As many as 20 beds of oil shale were mined at different times. Mining continued during the 1800s and by 1881 oil shale production had reached ...
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Lacustrine oil-shale deposits of Tertiary age are near Mae Sot, Tak Province, and at Li, Lampoon Province. The Thai Department of Mineral Resources has explored the Mae Sot deposit with the drilling of many core holes. The oil shale is a lamosite similar in some respects to the Green River oil shale in Colorado. The Mae Sot deposit underlies ...
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The largest known deposits of oil shale are in a 16,000-square mile area of the Green River Formation in Colorado, Utah, and Wyoming with a total in-place oil shale resources estimated at 4.3 trillion barrels.
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