Barrels Per Day, or BPD, is a unit of measurement that shows or describes the amount of crude oil consumed or produced in a day.
This method measures oil output based on the number of barrels produced daily. In most situations, the number of barrels produced in a single day and the oil price have an inverse correlation. This unit of measure is mainly used in the oil spot market since prices are quoted in dollar terms per barrel. Generally, an oil barrel holds about 42 US gallons, equivalent to 35 imperial gallons.