Aramco's chief executive said the state-owned oil giant was able to supply the local market and would compensate local refineries with additional feed in the next couple of days. The Saudi Arabian index was 0.7% higher as Al Rajhi Bank added 1.8% and Banque Saudi Fransi advanced 2.6%. Petrochemicals also rose after saying their feedstock supplies from Aramco significantly improved with a 2% increase in the shares of Saudi Fertilizers Co (SAFCO), which announced that its supply had returned to normal.
Qatar's index was up 0.7%, driven by a 5.6% jump in Mesaieed Petrochemicals and a 6.2% surge in Qatar Insurance Company.
Kuwait's index decreased 2.2%, extending its losses for the sixth straight session, with 14 of the 19 stocks on the index declining.
Kuwait Finance House was down 4.4% and National Bank of Kuwait lost 2.3%.
In Dubai, the index dropped 0.9%, pressured by financial and real estate stocks.
Dubai's largest lender, Emirates NBD, declined 1.1%, while developer Emaar Properties closed 1.3% lower.
Dubai house prices will decline sharply this year and next, according to property market experts in a Reuters poll conducted earlier in September.
In Abu Dhabi, the index lost 0.3%, with the country's largest lender, First Abu Dhabi Bank, declining 0.4% and Abu Dhabi Commercial bank down 1.4%.
Egypt's blue-chip index edged down 0.1%, with 23 of 30 stocks falling.
Juhayna Food Industries plunged 5.7% and Credit Agricole Egypt eased 2.4%.