petrocurrency
/ˈpɛtrə(ʊ)ˌkʌrənsi/ /ˈpɛtrəʊˌkʌr(ə)nsi/noun
The currency of a petroleum-exporting country, whose exchange rate varies chiefly with the fluctuations of the petroleum market.
Origin
1970s; earliest use found in Time. From petro- + currency.