What Is The PetroDollar? In a nutshell, the “petrodollar system” is the global “dollars for oil” system which literally holds up the demand for U.S. dollars. The countries of Iraq, Iran, Venezuela, etc. who have sought to sell their oil in any other currency have been met with swift repercussions and labeled as enemies of the West. However, those who continue to sell their oil exclusively in U.S. dollars like Saudi Arabia, Qatar, Kuwait, etc., are considered American allies, no matter how ghastly their human rights records are. Does this dollar for oil system play any role in Bible prophecy?