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Both the 42-US-gallon (159 L) barrels (based on the old English wine measure), the tierce (159 litres) and the 40-US-gallon (150 L) whiskey barrels were used. Also, 45-US-gallon (170 L) barrels were in common use. The 40 gallon whiskey barrel was the most common size used by early oil producers, since they were readily available at the time.
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.
Volume Unit of measure cubic metre litre Reference size Usage 1 cubic metre = 1 = 1000: base unit in SI : 1 barrel = 0.158 987 294 928 = 158.987294928 = 42 US gallons = 9,702 cubic inches
[nb 1] (This was the basis for calling 64 gallons a quarter.) At some time before the 15th century, it was reduced to 252 gallons, so as to be evenly divisible by other small integers, including seven. [nb 2] Note that a 252-gallon tun of wine has a mass of approximately 2060 pounds, [4] between a short ton (2000 pounds) and a long ton (2240 ...
Earlier, another size of whiskey barrel was the most common size; this was the 40 US gallons (33.3 imp gal; 151.4 L) barrel for proof spirits, which was of the same volume as five US bushels. However, by 1866, the oil barrel was standardized at 42 US gallons. Oil has not been shipped in barrels [29] since the introduction of oil tankers, but ...
Although crude oil is sometimes shipped in 55-US-gallon drums, the measurement standard of oil in barrels is based on the whiskey containers of the 1870s that measured 42 US gallons (35 imp gal; 159 L). [12] The measure of 42 US or wine gallons corresponds to a wine tierce (third-pipe). A wine barrel, or 1 ⁄ 8 tun, measures 31.5 US gallons ...
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Historically a beer barrel was a standard size of 36 US gallons (140 L; 30 imp gal), as opposed to a wine barrel of 32 US gallons (120 L; 27 imp gal), or an oil barrel of 42 US gallons (160 L; 35 imp gal). Over the years barrel sizes have evolved, and breweries throughout the world use different sized containers.