Here’s the link to the Rystad Energy chart: http://www.rystadenergy.com/AboutUs/NewsCenter/PressReleases/global-liquids-cost-curve
Here’s a link to a similar chart... (I wished I’d noted the other one I saw... it was similar)
http://www.businessinsider.com/oil-cash-costs-2014-12
Nobody is going to shut production until they are losing CASH out of pocket. So far, the % of production under that threshold remains pretty small.