(Oil production cuts) can be constituted-of-or-filled-with some barrels.
Some (oil refineries) can be with a capacity of some barrels.
Some percent can be constituted-of-or-filled-with some barrels.
A maximum can be constituted-of-or-filled-with some barrels.
A government may purchase some barrels of gasoline from a firm.
An iraqi government may introduce surcharges on a barrel of oil.