* At least three firms halt output in Libya
* Concern other big producers could suffer supply outages
* Coming Up: January U.S. existing home sales data, API
(Adds comments, updates prices)
By Zaida Espana
LONDON, Feb 23 (Reuters) - Brent crude futures rose on Wednesday as Libya's ongoing turmoil fuelled fears the unrest could spread to other oil producing nations and choke supplies.
Brent crude futures <LCOc1> were $1.52 up at $107.30 a barrel by 1200 GMT, having hit a 2-1/2-year high of $108.70 on Monday. U.S. crude futures <CLc1> were 57 cents firmer at $95.99 a barrel by the same time, the highest level since October 2008.
Brent continued to gain support after producers including Repsol, Eni and BASF's Wintershall halted operations amid violent clashes in Libya, which pumps 1.6 million barrels per day (bpd), or nearly 2 percent of global supply. [
]This disruption marks the first cut in oil supplies related to a wave of protests in North Africa and the Middle East.
"Brent is set to profit to a greater extent from its tighter availability and its geographical proximity to the unrest in Libya and the danger of protests spreading to other oil producing countries," analysts at Commerzbank wrote in a note.
Around 300,000 barrels per day (bpd) were currently offline, MF Global analysts said in a note, warning those figures could rise given the lack of visibility on impact inside the country.
The European Commission said on Wednesday an operation to evacuate around 10,000 EU citizens from Libya was under way. [
] [ ]Focus was also on top exporter Saudi Arabia, where ruling King Abdullah unveiled a package of benefits worth billions of riyals to mark his return on Wednesday after months of medical treatment abroad. [
]Jittery investors are worried about further supply disruption if protests spread in the country, which supplies around 10 percent of the world's oil and holds most of the world's spare capacity. On Tuesday, Saudi stopped short of pumping more oil to calm markets, saying prices were driven by fear. [
] <^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Middle East unrest graphic http://r.reuters.com/nym77r Analysis on long-term impact on Libyan oil: [ ] Factbox on Libyan oil and gas: [ ] Libyan oil map: http://r.reuters.com/jem28r Interactive factbox http://link.reuters.com/puk87r ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>
OIL SUPPLIES EYED, U.S. STOCKS AWAITED
Although protests in Saudi Arabia have so far been low key, Shi'ites in neighbouring Bahrain are protesting against the Sunni-led government, fanning worries this could spill over to the Shi'ite minority in Saudi's oil-producing eastern province.
"The importance of Bahrain is perhaps being underplayed currently. While not a major oil producer, Bahrain's impact on the oil market reverberates through its importance in Saudi Arabia," Barclays Capital analysts Helima Croft and Amrita Sen said in a note.
International Energy Agency (IEA) executive director Nobuo Tanaka said that oil prices above $100 per barrel for the rest of the year could drag the global economy back into a repeat of the 2008 economic crisis. [
]Brent crude has risen around 12.5 percent so far this year. U.S. crude is up just under 5 percent on the year, but is over $50 below its 2008 high of $147.27.
Analysts said U.S. light crude futures remained well supported following the roll of the contract, although a potential build-up of weekly U.S. crude oil stockpile data due later could pressure prices. [
]"The fact that WTI has risen further is mainly related to the contractual rollover, as the new front month contract was two dollars higher than the expiring contract," Commerzbank analyst Carsten Fritsch said.
U.S. inventory data from both American Petroleum Institute and EIA are delayed a day this week due to the Presidents Day holiday on Monday, with the API report due at 2130 GMT and the EIA awaited on Thursday.
Analysts polled by Reuters expect crude inventories in the U.S. rose for the sixth consecutive time last week. [
] (Additional reporting by Francis Kan in Singapore; editing by James Jukwey)