Published: Jan 10, 2011 5:48 PM EST
Updated: Jan 10, 2011 2:48 PM EST

NEW YORK (AP) - Oil prices rose above $89 a barrel Monday after the 800-mile trans-Alaska pipeline owned by BP PLC and four other companies was shut down because of a leak.

Benchmark oil for February delivery climbed $1.24 to $89.27 a barrel in midday trading on the New York Mercantile Exchange.

The pipeline, which carries between 630,000 barrels and 650,000 barrels a day, was shut down Saturday after a leak was reported at a North Slope pump station. The leak has been contained but there is no immediate timeframe for reopening the pipeline, according to Alyeska Pipeline Service Co., which manages the line.

The closure cut oil production on the North Slope to about 5 percent of normal. The pipeline carries 17 percent or less of the U.S. crude output.

Refineries that rely on Alaska crude have several weeks of inventories available so prices aren't expected to top $100 a barrel because of the closure, according to The Schork Report, an energy consulting firm.

"We don't believe the news as it stands is enough to push crude oil above the $100 barrier," The Schork Report said. "If production is reduced to 5 percent until March or April, then we'll change our mind."

Once a repair schedule has been released, oil prices could ease, added Cameron Hanover energy consultancy in its Monday report.

In addition to BP, the other pipeline owners include ConocoPhillips, ExxonMobil Corp., Unocal Pipeline Co. and Koch Alaska Pipeline Company LLC.

Meanwhile, a stronger dollar tempered the rise in oil and other energy prices. Since crude is priced in dollars, a stronger dollar makes it more expensive for buyers who use the euro or other currencies.

Oil prices were kept in check by a stronger dollar, which makes crude more expensive for investors holding other currencies.

Gasoline pump prices are at a national average of $3.09 for a gallon of regular. That's about 11 cents more than a month ago and 35 cents above a year ago.

 In other Nymex trading in February contracts, heating oil gained 6.25 cents at $2.5488 a gallon, while gasoline futures added 3.83 cents at $2.4514 per gallon. February natural gas futures lost 7.2 cents at $4.350 per 1,000 cubic feet. In London, Brent crude rose $2.03 to $95.36 a barrel on the ICE Futures exchange.

 --- Associated Press writers Pablo Gorondi in Hungary and Alex Kennedy in Singapore contributed to this report.

(Copyright 2011 by The Associated Press. All Rights Reserved.)