Despite the oil industry being arguably the most vital and influential sector in the world, the average member of the public knows relatively little about its inner workings. Oil prices are possibly the most obvious example of this, with constant discussions over whether they will drop below $40 or if they are set to rise. What many investors are unaware of, however, is that there are over a thousand types of crude oil. This means that Western Canadian Select, currently trading at 37.27, is already below that much-hyped $40 mark, and while Brent oil prices fell nearly 50 cents on Thursday, Qatar’s Marine blend was up by a dollar. From the giant Daqing oil field in China, to the offshore Girassol oil field in Angola, oil is produced around the world at differing levels of quality and with varying costs. A barrel of Alaskan North Slope will cost you […]