What happens if someone is forced to take physical possession of many barrels of oil that they bought on the open market, but they have no storage space left to put it?
ETA: In jeffronicus answer below, the buyer has options on how to accept the oil. This question aims to find out what happens if the buyer is out out of options. All space is full. The storage where the oil currently sits is contracted to someone else so they insist on delivering the physical possession of the oil.
Another clarification: The scenario is that the price of oil has crashed to the point where storing the oil is more expensive than the oil.