where can you find a deposite of oil?

Answer 1

Under the parked car.
Almost every place in the world, but most of it is in such low quantity that it would never pay the costs of drilling down to it.
Ideal places have porous rock under imporous rock and both are gently folded so oil collects up under the folds.

Answer 2

Call your town borough. They will let you know where the local oil depositories are.

Answer 3

under the ground or in the ocean