US oil producers have started announcing plans for putting shut wells back online. But just how sustainable are these plans at current prices and with the uncertain global demand outlook? And how are OPEC and its allies going to view this returning US shale production as they're deciding how long to keep their massive oil supply cuts in place? Jason Modglin, the new president of the Texas Alliance of Energy Producers, tells us how drillers in the top US oil-producing state are weighing the market uncertainties as they start to put wells back into service. Shin Kim, head of oil supply and production analytics for S&P Global Platts, predicts how high oil prices can go before OPEC starts to worry about stimulating US shale.