Week end Reading...
USGS World’s Oil and Gas Endowment
"75 Percent of Oil Resources in Four Regions
The assessment results indicate that about 75 percent of the undiscovered and technically recoverable conventional oil of the world is in four regions: South America and the Caribbean (126 bbo); sub-Saharan Africa (115 bbo); the Middle East and North Africa (111 bbo); and the Arctic provinces portion of North America (61 bbo)."
https://www.usgs.gov/blogs/features/usgs_top_story/worlds-oil-and-gas-endowment/
An Estimate of Undiscovered Conventional Oil and Gas Resources of the World, 2012
https://pubs.usgs.gov/fs/2012/3042/