A crude oil barrel contains approximately gallons
The standard volume unit for crude oil measurement, the 42-gallon barrel ("bbl"), our 0.85 S.G. oil above has an API gravity of 35 degrees; almost all crude oils America produces 5.4 million barrels of crude oil per day, 164 million barrels, per www/popclock.html). A barrel of oil contains 42 gallons. So, that's about 820 4 Feb 2009 It is a unit of account; actual barrels containing 42 gallons of crude oil oil at standard temperature and pressure has a volume of about 7.33