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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).
The task of converting a standard barrel of oil to a standard cubic metre of oil is complicated by the fact that the latter is defined by the API to mean the amount of oil that, at different reference conditions (101.325 kPa and 15 °C (59.0 °F)), occupies 1 cubic metre. The fact that the refence conditions are not exactly the same means that ...
The standard size barrel of crude oil or other petroleum product (abbreviated bbl) is 42 US gallons (35.0 imp gal; 159.0 L). This measurement originated in the early Pennsylvania oil fields , and permitted both British and American merchants to refer to the same unit, based on the old English wine measure, the tierce .
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.
Metric regions commonly use the tonne of oil equivalent (toe), or more often million toe (Mtoe). Since this is a measurement of mass, any conversion to barrels of oil equivalent depends on the density of the oil in question, as well as the energy content. Typically 1 tonne of oil has a volume of 1.08 to 1.19 cubic metres (6.8 to 7.5 bbl).
Oil prices will fall to an average of $65 per barrel in 2025 amid an oversupply of crude and a backdrop of slowing demand as countries shift toward cleaner energies and forms of transportation ...
One US dry barrel: 1.17 × 10 −1: One US beer barrel, 31 US gallons 1.19 × 10 −1: One US fluid barrel (apart from oil or beer), 31.5 US gallons 1.59 × 10 −1: One oil barrel, 42 US gallons, about one tierce (158–160 L) 1.64 × 10 −1: One imperial barrel, 36 imperial gallons 1.80 × 10 −1: One koku: 2 × 10 −1: Standard drum size ...
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