I'm not sure if there's an international agency specifically tasked with that. I know there has been lots of analysis over the years, mostly within this country by Natural Resources Canada, on the emissions intensity of oil production. International comparisons have been developed, and that analysis has been done. I can't recall if that was done just by the natural resources ministry or if that was in conjunction with the International Energy Agency. This is not something I've worked on directly, but I'm sure that analysis exists.
On November 20th, 2018. See this statement in context.