Sept. 12 (Bloomberg) -- Saudi Aramco, the world's biggest state oil company, will maintain crude supplies in October to customers in Asia and Europe at levels agreed under annual contracts, refinery officials said.

The Dhahran, Saudi Arabia-based producer will supply full volumes of crude oil to Asia and Europe next month, unchanged from September, said four refinery officials who had received notices from the company. They asked not to be identified because of confidentiality agreements.

The Organization of Petroleum Exporting Countries said on Sept. 10 the crude market is oversupplied and told its members to strictly comply with production quotas after oil prices fell about 30 percent from July. The refinery officials said on Sept. 11 they have received no indication from Saudi Aramco that previously agreed volumes would change.

Saudi Arabia, whose output is about 500,000 barrels a day above its 8.9 million barrel a day quota, hasn't altered its oil policy after the OPEC meeting in Vienna, according to a Saudi oil official. The kingdom will continue to supply whatever customers want, the official told Bloomberg News on condition of anonymity.

Saudi Arabia supplies crudes of different quality, with the Arab Extra Light grade fetching about $7.25 a barrel more than Arab Heavy for October sales to Europe. Heavier crudes yield lower-value products.

Aramco typically tells customers in the first half of the month how much oil they will receive in the following month. From November 2006 until October 2007, Aramco had cut volumes to Asia set out in annual contracts, in line with reductions in output agreed on by OPEC.

To contact the reporter on this story: Nesa Subrahmaniyan in Singapore at nesas@bloomberg.netAlexander Kwiatkowski in London at akwiatkowsk2@bloomberg.net

Last Updated: September 11, 2008 23:03 EDT