July 14 (Bloomberg) -- The Organization of Petroleum Exporting Countries will tomorrow say demand for its own crude oil in 2009 will be less than its forecast for 2008, the Middle East Economic Survey reported, without saying where it got the information.

The 13-member OPEC will say in its July 15 Monthly Oil Market Report that the call on its crude next year will be 500,000 barrels a day less than the corresponding figure for 2008, the Cyprus-based newsletter said today.

The forecast will have an impact on any discussions about possible production increases at OPEC's scheduled ministerial meeting in Vienna on Sept. 9, MEES said.

Keeping OPEC's production at the current level of 32.2 million barrels a day would increase global crude inventories at a rate of 800,000 barrels a day in 2009, according to MEES.

To contact the reporters on this story: Maher Chmaytelli in Cyprus at mchmaytelli@bloomberg.net

Last Updated: July 14, 2008 05:54 EDT