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  2. Oil shale - Wikipedia

    en.wikipedia.org/wiki/Oil_shale

    Oil shale is an organic-rich fine-grained sedimentary rock containing kerogen (a solid mixture of organic chemical compounds) from which liquid hydrocarbons can be produced. In addition to kerogen, general composition of oil shales constitutes inorganic substance and bitumens. Based on their deposition environment, oil shales are classified as ...

  3. Barrel (unit) - Wikipedia

    en.wikipedia.org/wiki/Barrel_(unit)

    Barrel (unit) Ale casks at a brewery in the UK. These are firkins, each holding 9 imperial gallons (41 L) or a quarter of a UK beer barrel. A barrel is one of several units of volume applied in various contexts; there are dry barrels, fluid barrels (such as the U.K. beer barrel and U.S. beer barrel), oil barrels, and so forth.

  4. Shale oil extraction - Wikipedia

    en.wikipedia.org/wiki/Shale_oil_extraction

    Shale oil extraction is an industrial process for unconventional oil production. This process converts kerogen in oil shale into shale oil by pyrolysis, hydrogenation, or thermal dissolution. The resultant shale oil is used as fuel oil or upgraded to meet refinery feedstock specifications by adding hydrogen and removing sulfur and nitrogen ...

  5. Price of oil - Wikipedia

    en.wikipedia.org/wiki/Price_of_oil

    Oil traders, Houston, 2009 Nominal price of oil from 1861 to 2020 from Our World in Data. The price of oil, or the oil price, generally refers to the spot price of a barrel (159 litres) of benchmark crude oil—a reference price for buyers and sellers of crude oil such as West Texas Intermediate (WTI), Brent Crude, Dubai Crude, OPEC Reference Basket, Tapis crude, Bonny Light, Urals oil ...

  6. Internal ballistics - Wikipedia

    en.wikipedia.org/wiki/Internal_ballistics

    Internal ballistics (also interior ballistics), a subfield of ballistics, is the study of the propulsion of a projectile. In guns, internal ballistics covers the time from the propellant 's ignition until the projectile exits the gun barrel. [1] The study of internal ballistics is important to designers and users of firearms of all types, from ...

  7. Drum (container) - Wikipedia

    en.wikipedia.org/wiki/Drum_(container)

    Drum (container) A typical 208.2-litre (55 US or 44 imp gal) tight head drum. Low level nuclear waste in open head steel drums. A drum (also called a barrel) is a cylindrical shipping container used for shipping bulk cargo. Drums can be made of steel, dense paperboard (commonly called a fiber drum), or plastic, and are generally used for the ...

  8. Barrel of oil equivalent - Wikipedia

    en.wikipedia.org/wiki/Barrel_of_oil_equivalent

    The barrel of oil equivalent (BOE) is a unit of energy based on the approximate energy released by burning one barrel (42 US gallons, 35 imp gal or about 159 litres) of crude oil. The BOE is used by oil and gas companies in their financial statements as a way of combining oil and natural gas reserves and production into a single measure ...

  9. Smokeless powder - Wikipedia

    en.wikipedia.org/wiki/Smokeless_powder

    Smokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to black powder. Because of their similar use, both the original black powder formulation and the smokeless propellant which replaced it are commonly described as gunpowder. The combustion products of smokeless ...