Smoke & mirrors. Art Berman has shown that none of the Tight&Shale producers are/has been profitable. They are largely there because of credit/debt (which of course can't grow for ever)
"Tight oil companies outspend cash flow by an average of 120%: spend $2.20 for every dollar earned from operating activities." "Tight oil company debt-to-cash from operating activities ratio averages 3.3: would take more than 3 years to pay down debt if all cash flow was used."
Please see: http://www.artberman.com/wp-content/uploads/The-Shale-Revolu...