How Much Oil Has Been Extracted From the Earth (and How Big Is That Volume?)
Humans have extracted on the order of 1.5 trillion barrels of oil to date. That is about 2.39×10^14 liters, or roughly 239 cubic kilometers of liquid. Put another way, it would fill about one and a half Lake Tahoes and about half of Lake Erie. Best current estimate: ≈1.5 trillion barrels extracted cumulatively through 2023 ≈ 239 km³, derived from 9,004 exajoules of historical oil production energy and standard crude oil heat content (