[spokeshave]

There were a lot of government authorities saying the reserves of Brazil were 50 billion barrels, 100 billion barrels, even 240 billion barrels..

Ha...small potatoes......when the Green River Formation weighs in at 3 trillion barrels.

[Sherman Logan]

A VERY large chunk of southern Brazil (and neighboring countries) sits over gas shale.

http://geology.com/energy/world-shale-gas/

[thackney]

Green River isn’t oil, rather Kerogen that has to be retorted (cooked) out of the rock then made into a syncrude. It cannot be produced just by drilling, like the Presalt oil.