It’s hard to overstate how much the petrodollar system benefits the US. It’s the bedrock of the US financial system and has underpinned the dollar’s role as the world’s reserve currency since the 1970s."
Is this era coming to an end?
https://financialunderground.com/articles/is-the-collapse-of-the-petrodollar-imminent-heres-how-it-could-impact-the-worlds-reserve-currency/