The number of bankruptcies in the US shale oil business continues to grow, and the price of a barrel has been grinding higher. On the face of it this is good news for Saudi Arabia and Russia, who both desperately want the price back up in the 70s - 80s at least, but it is unlikely to happen I'm afraid. Those oil fields remain discovered, and a bankruptcy allows the writing off of the old debt, and potentially a new company to rise from the ashes, buy out the existing assets at a knock down price and start pumping - hopefully with less debt and more equity in the mix.
In the near future I can't see oil going back down to 30, but at the same time I can't see it rising much either.
And at the same time cheap petrol has delivered a boost to consumers - see today's retail sales and car sales data for the US and Germany for evidence. Cheap oil is turbocharging the effects of QE.
Over the next 5 years the West and Asia will benefit from sustained low prices at the expense of Russia, the Middle East and Venezuela. Beyond that, who knows - maybe we'll all be driving electric, solar or fuel cell cars. Or they'll be driving themselves.