Oil futures jumped back to new record highs above $90 US a barrel Thursday on news that OPEC production increases aren't coming as fast as expected and that the cartel won't announce new output quotas when it meets next month.

Prices were already higher on growing concerns about conflict in the Middle East and declining supplies of crude in the U.S. when Oil Movements, a company that tracks oil tanker traffic, reported that crude shipments from Organization of Petroleum Exporting Countries members will grow more slowly than anticipated through early November, according to Dow Jones Newswires.

Meanwhile, OPEC Secretary General Abdalla el-Badri told the Wall Street Journal Asia that the cartel is not in discussions to boost production by 500,000 barrels. El-Badri's comments counter rumours that Saudi Arabia is pushing for a production increase. In September, OPEC bowed to Saudi pressure and announced a production increase of 500,000 barrels a day, effective Nov. 1.

"It shows a little drama in the cartel," said Phil Flynn, an analyst at Alaron Trading Corp. in Chicago.

Light, sweet crude for December delivery rose $3.36 to close at $90.46 US a barrel on the New York Mercantile Exchange after earlier hitting an intraday high of $90.60 US.

Crude futures added to gains achieved in the early morning hours Thursday when Lebanese troops fired on Israeli warplanes. A conflict between Israel and Lebanon wouldn't itself have much impact on oil supplies, but traders worry that any hostilities in the Middle East would eventually draw in big oil producers such as Saudi Arabia and Iran.

Energy traders also remain concerned that a threatened incursion by Turkish armed forces into Iraq in search of Kurdish rebels would cut oil supplies out of northern Iraq.

On Wednesday, crude prices jumped sharply after the U.S. Energy Information Administration reported that oil inventories fell by 5.3 million barrels last week, much more than analysts expected. That report reversed a three-day downward price trend, and put energy traders back in a bullish mood, analysts said.

"Yesterday's EIA report pretty much changed the personality of the market," said Jim Ritterbusch, president of Ritterbusch and Associates in Galena, Ill.