Barrel – Definition and Pronunciation
What is Barrel?
Barrel (b/bl/bbl) is a volumetric unit of measure for crude oil and petroleum products equivalent to 42 US gallons or 158,978 litres. See Barrel of oil equivalent (boe).
Examples of Barrel
In the next 20 years overall energy demand is projected to grow from 98 quads to 136 quads. This represents a grand total of 38 quads, or the equivalent of 6 346 000 000 barrels of oil, of additional supply. (1 quad = 167 000 000 barrels of oil).
From “Challenges Developing Natural Gas Infrastructure”.
The section of the beads and volume of patches given below are calculated by adding to the net value, 15 % of margin for barrel shape effect and local deformation not taken in account during dz measurement.
From “Mastic Application Procedures for Mark III Containment Systems”.
Most winches should be stripped down for maintenance and lubrication perhaps once a season, but during a survey you quickly check for wear in the bearings by simply moving the barrel of the winch to and fro.
From “Masts and Rigging Systems for Sailing Ships”.