The role that Cushing, Oklahoma, and its 9 square miles of storage tanks for crude oil plays in the US oil price levels. How the oil inventories kept rising and new oil tanks kept being added because of the profits in futures from the $6 difference between today's oil price and the oil price some months into the future. Now the situation is in reverse because of the credit crunch their is less borrowed money available for this kind of trading, and suddenly there is a big depletion in oil stocks as some sellers had to sell stocks at Cushing to cover losses and others found it profitable to sell as prices were oil supplied now jumped higher. So there is a big depletion in oil stocks at Cushing and this affects prices of oil futures on the Nymex. In 1983 Cushing was designated by Nymex the New York Mercantile exchange as the official delivery point for its new futures contract on light, sweet crude. This Nymex price now serves as a global benchmark. this is the background behind how Cushing stocks levels in oil tanks has a disporportionate influence on Nymex oil price for futures. So speculative opportuntities for profit in the oil trading and storage combined with changing market conditions are creating a situation the depletion of oil in storage tanks that can create a surge in oil prices to still higher levels, because of lower inventory levels at Cushing....