What it costs to produce oil

http://money.cnn.com/interactive/economy/the-cost-to-produce-a-barrel-of-oil/index.html?iid=EL

The collapse in the price of oil has squeezed energy companies and countries that were betting on higher returns. Here’s what it costs on average to pump a barrel of oil in the 20 biggest oil producing nations.

Total cost

Cost breakdown

Overall cost to produce one barrel of oil