Mizuho: 25 More Years of Oil Shale Wells Left to Drill / Latest / By mark To date, roughly 290,000 horizontals have been landed in tight rock in the Lower 48 and 270,000 locations remain, Mizuho Securities USA analyst and managing director Nitin Kumar found in a recent study. Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Related