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Mineralogical and Geochemical Studies of Oil Shale Deposits in …

The limits and difference between muddy rock, black shale and oil shale in different sediment types based on the organic carbon content defined by [36], the muddy rock contains TOC% less than 1 wt%. the black shale has organic carbon content up to 20 wt%, while, the oil shale has TOC% ranged from less than 20 wt% to 50 wt%.

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MI-21 Oil Map of Colorado

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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Oil shale

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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Fossil fuel energy resources of Ethiopia: Oil shale deposits

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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Oil shale | Definition, Composition, Extraction, Production, & Facts

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

Oil shale deposits around the world represent a substantial but largely untapped petroleum resource. The viability of oil shale as a feedstock for the large-scale production of liquid hydrocarbon fuels continues to be dependent on the cost of producing from conventional crude oil resources and, increasingly, unconventional petroleum sources.

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Oil Shale and Tar Sands

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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What's oil shale?

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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Oil Shale and Tar Sands

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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Oil Shale | NDR (National Data Repository)-Directorate General of

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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Oil shale | Definition, Composition, Extraction, …

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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Oil Shale

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 | U.S. Geological Survey

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

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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Geology and Resources of Some World Oil-Shale Deposits

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Oil Shale | Properties, Composition, Uses » Geology …

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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United States Oil-Shale Deposits

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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US shale oil deposits: Two trillion barrels of crude oil

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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Oil Shale Deposits | Maps, Geology & Resources

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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China, Russia, Syria, Thailand and Turkey Oil-Shale …

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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Oil Shale

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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Oil shale deposits

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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U.S. Holds Most Recoverable Oil Reserves

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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Shale Oil: Overview, Benefits and Examples

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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Macroscopic seepage and microstructural behavior of oil shale …

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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Geology and resources of some world oil-shale deposits

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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U.S. shale oil and natural gas maps

U.S. shale oil and natural gas maps: 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 gas resources are also shown when available. U.S. and lower 48 states

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Canada Oil Shale Deposits | Map, Geology & Resources

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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U.S. shale oil and natural gas maps

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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United States Oil-Shale Deposits

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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