Question

Which area of the world has the longest crude oil reserves?

Answer 1

Oil reserves denote the amount of crude oil that can be technically recovered at a cost that is financially feasible at the present price of oil.[1] Hence reserves will change with the price, unlike oil resources, which include all oil that can be technically recovered at any price. Reserves may be for a well, a reservoir, a field, a nation, or the world. Different classifications of reserves are related to their degree of certainty.