September OSPs for Arab Medium and Arab Heavy were each raised by $1.25 a barrel. Aramco also cut OSPs for Europe, the U.S. and the Mediterranean.
Alongside the OSP release, Aramco asked Asian customers to submit crude nominations by August 7 for loading at Ras Tanura, its main export terminal inside the Strait of Hormuz, as well as alternative nominations from Yanbu or Sidi Kerir in case the strait remains closed, sources said.
Aramco said volumes available from the two alternative ports were limited and only Arab Light crude would be available.
In a further escalation of the Iran war, the Iran-aligned Houthis in Yemen attacked Saudi ships and oil facilities in the Red Sea, reducing visible crude loadings from Yanbu.
Since then, Saudi Aramco has offered additional crude cargoes for loading from Egypt's Mediterranean port of Sidi Kerir, a rerouting that lengthens voyages to Asian refiners and raises freight costs.