I expect the very companies with the nationalized assets will be called in to clean up the mess and get it all back on track again.
The thought occurred to me that Venezuelan crude is heavy. One wonders if the basin were fracked, lighter oil might be found further down. Chavez/Maduro lacked the expertise to make that determination
Maduro (and Chavez) did everything but pump crude all over the Venezuelans and light them all on fire. :^)