The consultancy Rystad Energy has released new estimates of global oil resources that help underscore why the discussion in energy circles has transformed over the last decade from when supplies will peak to when demand will taper off, because there's lots of oil left and being discovered.

The data: "Rystad Energy estimates that liquid resources from mature assets grew 151 billion barrels over the last four years, which is almost 17% more than the amount produced in those years. This brings the total remaining liquid resource count to 1.227 trillion barrels as of year-end 2017," they said in a brief report.