Question

what is the commercial unit of crude oil petroleum​

Answer 1

Answer:

The standard volume unit for crude oil measurement, the 42-gallon barrel ("bbl"), dates back to the 1860s,

Answer 2

Answer:

Crude oil measurement. Crude oil is measured in units of volume, weight and thermal energy. The standard volume unit for crude oil measurement, the 42_ gallon barrel ("bbl") ,dates back to the 1860s , when Pennsylvania producers actually stored and transported petroleum in wooden barrels.