My advise to all these shale oil driller, just hang tough because withing a year, the war in the Middle East will put the Middle East in such a disarray, that the biggest oil producers in the world will be the USA. You just wait and see if I’m not proven right.
I believe that shale will (permanently) become a brake on oil prices. It’s my understanding that unlike conventional oil wells, they are fairly easy to “turn on and off”. Oil high = turn on; oil low = turn off. So, we may have $60-80/barrel oil for quite a while.