Future Cost Of Oil How Do Crude-oil Futures Prices In Commodity Markets Translate Into Big Oil-company Costs?

How do crude-oil futures prices in commodity markets translate into big oil-company costs? - future cost of oil

Speculation about the trade in commodities is driven by a sense of concern for political and other external factors. The price of crude oil to refineries is determined by supply and actual demand in another market. Often create long-term contracts between the few big oil companies and foreign governments, the cost of crude oil. Why, then, each speculator driven by rising oil prices futures prices of goods in the price of gasoline at the pump reflect? I do not understand the relationship between the two markets. Can someone explain?