Middle East crude benchmarks Oman and Dubai were mixed on Friday, while Asia's spot premiums for Russian ESPO Blend crude and Iraqi Basra Light softened slightly.

Iraq's SOMO sold 1 million barrels of Basra Light crude oil loading June 28-30 at a premium of around $4.50 a barrel to its official selling price (OSP) to a Taiwan buyer via a spot tender awarded on Thursday, traders said.

Earlier this month, Phillips 66 had sold 1 million barrels of June-loading Basra Light crude to a Chinese buyer at a premium of around $4.70 a barrel to its OSP in the spot market.

Taiwan's CPC has bought 500,000 barrels of July-loading Upper Zakum crude at a premium of above $1.50 to its OSP via a monthly tender, traders said. Thailand's IPRC has bought Murban crude via a monthly tender, traders said. While trade details were not immediately known, July-loading Murban crude has been priced at spot premiums of around $1.30-$1.50 a barrel to its OSP.

Russian oil producer Surgut offered two more cargoes of ESPO Blend crude loading July 21-28 and July 24-31 in its fourth tender for the month, closing on Friday.

Surgut sold two July-loading cargoes of ESPO crude at premiums of around $3.20 a barrel to Dubai quotes via its third spot tender awarded on Thursday, traders said. The cargoes were offered to load over July 13-20 and July 16-23. The buyers were ChemChina and BP.

Vietnam's PV Oil has sold a 500,000-barrel cargo of Su Tu Den crude loading July 7-13 at a premium of around $2.5 a barrel to dated Brent to domestic Binh Son refinery, traders said.