SINGAPORE, Aug 1 Reuters Saudi Arabia, the world39;s biggest oil exporter, may raise its price for Arab Light crude for sale to Asian refiners for a third month as its voluntary output cuts may be extended, further tightening the supply of highsulphur, or sour, crude.

Stateowned Saudi Aramco may raise the official selling price OSP for its flagship Arab Light crude in September by about 45 cents from August to 3.65 a barrel above OmanDubai quotes, which would be the grade39;s highest premium this year, a Reuters survey of five refining sources showed.

Saudi Arabia has said it will cut its production by 1 million barrels per day bpd in July and August on top of broad reductions by the Organization of the Petroleum Exporting Countries and its allies, known as OPEC, to limit oil supply into 2024 to support prices.

Market participants and analysts forecast Saudi Arabia will extend the voluntary cut for another month to include September when OPEC holds its monthly Joint Ministerial Monitoring Committee meeting on Aug. 4.

It39;s always hard to make prediction on Saudi39;s OSPs. But the rollover of the 1 million bpd cut is seen as a baseline in September price assessments, said one respondent.

The supply reductions have boosted oil prices, particularly for sour crude, since the end of June.

The supply tightness is reflected in the widening of the backwardation during July in the first and thirdmonth price spread for Middle East benchmark crude Dubai, an indicator that…