Venezuela owes ExxonMobil a $1.6B settlement for their little nationalization stunt.
Russia may find out that this tin cup outfit owes more than its worth.
Secondly, though their reserves are vast, their crude is so sour that only a few select refineries have the ability to process it. Thus the profitable breakpoint is way up there on $/bbl basis. Another reason while this cesspool of nation is drowning in its own riches.