Once upon a time in BSE (before shale era) if you were to chart the price of oil and the price of natural gas together on the same graph, the path/track was almost identical. When the price of oil went up (or down), so too did the price of gas. With the advent of shale in 2008/2009, tracking between the two has changed. It’s gone. The value of natural gas compared to the value of oil is now *much lower* than it was in BSE.