* Pro-Mubarak demonstrators join fray, attack protesters
* U.S., France, Germany call for speedy Egypt transition
* U.S. crude inventories rise a third week -EIA data
* Coming up: US weekly jobless claims, 8:30 a.m. EST Thurs (Updates with Brent crude settlement, U.S. heating oil close, gasoline price, paragraphs 6, 12-15)
By Gene Ramos
NEW YORK, Feb 2 (Reuters) - Oil prices rose on Wednesday as worries persisted that upheaval in Egypt could spread across the Middle East and North Africa, source of a third of the world's supply of crude.
In earlier trade, prices had lost some steam after the dollar rebounded as nervous investors sought a safe haven and as data showed U.S. crude stockpiles rose for a third straight week.
"While the oil market wants to move lower on the bearish (inventory) data, it can't break away from worries about Egypt," said Phil Flynn, analyst at PFGBest Research in Chicago.
"The latest pictures of Egyptian demonstrations becoming violent have added to those worries," Flynn said.
U.S. March crude <CLH1> settled 9 cents higher at $90.86, bouncing off a session low of $90.10.
ICE Brent crude for March delivery <LCOH1> ended up 60 cents at $102.34 a barrel. In earlier trade it touched $102.36, the highest for a front-month contract since September 2008.
Brent's premium against the U.S. crude benchmark, West Texas Intermediate, remained wide at more than $11 a barrel, gaining from $10.97 at the close on Tuesday.
Part of Brent's strength stemmed from rising U.S. stocks at the key storage hub in Cushing, Oklahoma, the delivery point for oil futures traded on the New York Mercantile Exchange.
Stockpiles at the hub rose 667,000 barrels last week to a record 38.33 million barrels, data from the U.S. Energy Information Administration showed. [
]That was a portion of the total 2.6-million-barrel increase last week in U.S. crude inventories, the third straight week that supplies have risen.
A massive winter storm, meanwhile, brought parts of the U.S. Midwest to a standstill and delivered another wintry blow to the Northeast, the biggest market for heating oil.
The U.S. March heating oil contract <HOH1> settled 2.37 cents higher at $2.7807 a gallon, the highest for a front-month heating contract since October 2008.
Heating oil inventories fell 2.8 million barrels last week, to 39.2 million barrels, dropping for the eighth week in a row, the EIA reported.
Moving in the opposite direction, U.S. March gasoline <RBH1> fell 2.09 cents to $2.4985 a gallon, dropping from a 28-month closing high on Tuesday.
Data showed gasoline inventories jumped a whopping 6.2 million barrels last week to 236.2 million barrels, the highest level since March 1993.
TENSION IN EGYPT
Egyptian President Hosni Mubarak has said he will surrender power in September, angering protesters who sought an immediate end to his 30-year rule.
In sporadic skirmishes, Mubarak's supporters attacked protesters, further muddling the already explosive situation.
The United States, France, Germany and Turkey have urged Mubarak to carry out a speedy transition, but the president has dug in his heels. A Foreign Ministry statement said those calls aimed to "incite the internal situation" in Egypt. [
]Analysts expect oil markets to head higher unless the unrest in Egypt subsides.
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For package of graphics on unrest in the Middle East and
North Africa, including a map of the Suez Canal, click:
http://r.reuters.com/nym77r
Reuters Breakingviews column: [
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"We suspect that the as yet unresolved political standoff in Egypt will likely keep oil prices fairly well bid, at least for the balance of the week," said Edward Meir, senior commodities analyst at brokers MF Global.
Credit Suisse analysts agreed, saying price risks would remain "skewed to the upside" as long as geopolitical tensions in Egypt remained unresolved: "We expect oil prices to ease once tensions fade due to ample global inventories."
So far, the unrest in Egypt has not affected traffic on the Suez Canal or flows on the Suez-Mediterranean (SUMED) oil pipeline, but shipping sources said there were major disruptions in Egypt's Alexandria and Damietta ports due to staff shortages and an absence of customs officials.
Egypt controls the canal and the pipeline, which together moved over 2 million barrels per day of crude and oil products in 2009, the latest data available.
There are fears that the citizen uprising in North Africa could fuel similar protests in oil producers such as Libya or even Saudi Arabia, stirring fears of a temporary disruption to oil supplies. (Additional reporting by Robert Gibbons in New York; Christopher Johnson in London; Alejandro Barbajosa in Singapore; Editing by Dale Hudson and David Gregorio)